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【330369】2020年浙江省杭州市中考数学试卷

时间:2025-02-09 11:11:21 作者: 字数:20488字

2020年浙江省杭州市中考数学试卷

一、选择题:本大题有10个小题,每小题3,30分。在每小题给出的四个选项中,只有一项是符合题目要求的。

1.(3分) <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

2.(3分) <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

3.(3分)已知某快递公司的收费标准为:寄一件物品不超过5千克,收费13元;超过5千克的部分每千克加收2元.圆圆在该快递公司寄一件8千克的物品,需要付费 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A17 B19 C21 D23

4.(3分)如图,在 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 所对的边分别为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

Shape1

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

5.(3分)若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

6.(3分)在平面直角坐标系中,已知函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则该函数的图象可能是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

AShape2 BShape3

CShape4 DShape5

7.(3分)在某次演讲比赛中,五位评委给选手圆圆打分,得到互不相等的五个分数.若去掉一个最高分,平均分为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;去掉一个最低分,平均分为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;同时去掉一个最高分和一个最低分,平均分为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

8.(3分)设函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是实数, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

9.(3分)如图,已知 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的直径,半径 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 在劣弧 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 上(不与点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 重合), <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

Shape6

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

10.(3分)在平面直角坐标系中,已知函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,其中 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是正实数,且满足 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .设函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 轴的交点个数分别为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

C.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

二、填空题:本大题有6个小题,每小題4,24

11.(4分)若分式 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值等于1,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>   

12.(4分)如图, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 分别与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>   

Shape7

13.(4分)设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>   

14.(4分)如图,已知 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的直径, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 相切于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>   

Shape8

15.(4分)一个仅装有球的不透明布袋里共有4个球(只有编号不同),编号分别为1235.从中任意摸出一个球,记下编号后放回,搅匀,再任意摸出一个球,则两次摸出的球的编号之和为偶数的概率是  

16.(4分)如图是一张矩形纸片,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边上,把 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 沿直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 对折,使点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 落在对角线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 上的点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 处,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .若点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 在同一条直线上, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>   

Shape9

三、解答题:本大题有7个小题,66.解答应写出文字说明、证明过程或演算步骤.

17.(6分)以下是圆圆解方程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的解答过程.

解:去分母,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

去括号,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

移项,合并同类项,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

圆圆的解答过程是否有错误?如果有错误,写出正确的解答过程.

18.(8分)某工厂生产某种产品,3月份的产量为5000件,4月份的产量为10000件.用简单随机抽样的方法分别抽取这两个月生产的该产品若干件进行检测,并将检测结果分别绘制成如图所示的扇形统计图和频数直方图(每组不含前一个边界值,含后一个边界值).已知检测综合得分大于70分的产品为合格产品.

1)求4月份生产的该产品抽样检测的合格率;

2)在3月份和4月份生产的产品中,估计哪个月的不合格件数多?为什么?

Shape10

19.(8分)如图,在 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 中,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 分别在 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边上, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

2)设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的面积是20,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的面积.

Shape11

20.(10分)设函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时,函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的最大值是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的最小值是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值.

2)设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,且 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .圆圆说:“ <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 一定大于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ”.你认为圆圆的说法正确吗?为什么?

21.(10分)如图,在正方形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 中,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边上,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的平分线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的延长线交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长.

2)连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

求证:点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边的中点.

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值.

Shape12

22.(12分)在平面直角坐标系中,设二次函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是实数, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)若函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的对称轴为直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,且函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的表达式.

2)若函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,其中 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求证:函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

3)设函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 和函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的最小值分别为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值.

23.(12分)如图,已知 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的两条直径,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是半径 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的中点,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的半径为1,若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长.

2)连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的度数.

Shape13


2020年浙江省杭州市中考数学试卷

参考答案与试题解析

一、选择题:本大题有10个小题,每小题3,30分。在每小题给出的四个选项中,只有一项是符合题目要求的。

1.(3分) <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【分析】根据二次根式的乘法运算法则进行运算即可.

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题主要考查二次根式的乘法运算法则,关键在于熟练正确的运用运算法则,比较简单.

2.(3分) <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【分析】直接利用平方差公式计算得出答案.

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】此题主要考查了平方差公式,正确运用公式是解题关键.

3.(3分)已知某快递公司的收费标准为:寄一件物品不超过5千克,收费13元;超过5千克的部分每千克加收2元.圆圆在该快递公司寄一件8千克的物品,需要付费 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A17 B19 C21 D23

【分析】根据题意列出算式计算,即可得到结果.

【解答】解:根据题意得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> (元 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

则需要付费19元.

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】此题考查了有理数的混合运算,熟练掌握运算法则是解本题的关键.

4.(3分)如图,在 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 所对的边分别为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

Shape14

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【分析】根据三角函数的定义进行判断,就可以解决问题.

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 所对的边分别为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,即 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,故 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 选项不成立, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 选项成立;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,即 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,故 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 选项不成立, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 选项不成立.

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题主要考查了锐角三角函数的定义,根据锐角三角函数的定义求出对应三角函数值即可.

5.(3分)若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【分析】举出反例即可判断 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,根据不等式的传递性即可判断 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,但是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,不符合题意;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,但是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,不符合题意;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,符合题意;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,但是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,不符合题意.

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】考查了不等式的性质,应用不等式的性质应注意的问题:在不等式的两边都乘以(或除以)同一个负数时,一定要改变不等号的方向;当不等式的两边要乘(或除以)含有字母的数时,一定要对字母是否大于0进行分类讨论.不等式的传递性:若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

6.(3分)在平面直角坐标系中,已知函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则该函数的图象可能是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

AShape15 BShape16

CShape17 DShape18

【分析】求得解析式即可判断.

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,解得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 直线交 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 轴的正半轴,且过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查了一次函数图象上点的坐标特征,图象上点的坐标适合解析式.

7.(3分)在某次演讲比赛中,五位评委给选手圆圆打分,得到互不相等的五个分数.若去掉一个最高分,平均分为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;去掉一个最低分,平均分为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;同时去掉一个最高分和一个最低分,平均分为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【分析】根据题意,可以判断 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的大小关系,从而可以解答本题.

【解答】解:由题意可得,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查算术平均数,解答本题的关键是明确算术平均数的含义.

8.(3分)设函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是实数, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【分析】 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;代入函数式整理得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,将 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值分别代入即可得出结果.

【解答】解:当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;代入函数式得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

整理得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,故 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 错误;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,故 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 错误;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,故 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 正确;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,故 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 错误;

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查了待定系数法、二次函数的性质等知识;熟练掌握待定系数法是解题的关键.

9.(3分)如图,已知 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的直径,半径 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 在劣弧 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 上(不与点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 重合), <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

Shape19

A <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> C <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【分析】根据直角三角形两锐角互余性质,用 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 表示 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,进而由圆心角与圆周角关系,用 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 表示 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,最后由角的和差关系得结果.

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

Shape20

【点评】本题主要考查了圆的基本性质,直角三角形的性质,关键是用 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 表示 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

10.(3分)在平面直角坐标系中,已知函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,其中 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是正实数,且满足 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .设函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 轴的交点个数分别为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>    <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

A.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> B.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

C.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> D.若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【分析】选项 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 正确,利用判别式的性质证明即可.

【解答】解:选项 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 正确.

理由: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是正实数,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

对于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

则有△ <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 选项 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 正确,

故选: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查抛物线与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 轴的交点,一元二次方程的根的判别式等知识,解题的关键是理解题意,灵活运用所学知识解决问题.

二、填空题:本大题有6个小题,每小題4,24

11.(4分)若分式 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值等于1,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  0 

【分析】根据分式的值,可得分式方程,根据解分式方程,可得答案.

【解答】解:由分式 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值等于1,得

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

解得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

经检验 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是分式方程的解.

故答案为:0

【点评】本题考查了分式的值,解分式方程要检验方程的根.

12.(4分)如图, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 分别与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>   <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  

Shape21

【分析】直接利用平行线的性质得出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,进而利用三角形外角的性质得出答案.

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故答案为: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】此题主要考查了平行线的性质以及三角形的外角性质,正确得出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是解题关键.

13.(4分)设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>   <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  

【分析】根据完全平方公式得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,两式相减即可求解.

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

两式相减得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

解得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故答案为: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查了完全平方公式,完全平方公式: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

14.(4分)如图,已知 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的直径, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 相切于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>   <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  

Shape22

【分析】根据切线的性质得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,根据勾股定理得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,于是得到结论.

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的直径, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 相切于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故答案为: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查了切线的性质,解直角三角形,熟练掌握三角函数的定义是解题的关键.

15.(4分)一个仅装有球的不透明布袋里共有4个球(只有编号不同),编号分别为1235.从中任意摸出一个球,记下编号后放回,搅匀,再任意摸出一个球,则两次摸出的球的编号之和为偶数的概率是  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  

【分析】画树状图展示所有16种等可能的结果数,再找出两次摸出的球的编号之和为偶数的结果数,然后根据概率公式求解.

【解答】解:根据题意画图如下:

Shape23

共有16种等情况数,其中两次摸出的球的编号之和为偶数的有10种,

则两次摸出的球的编号之和为偶数的概率是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故答案为: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查了列表法与树状图法:利用列表法和树状图法展示所有可能的结果求出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,再从中选出符合事件 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的结果数目 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求出概率.

16.(4分)如图是一张矩形纸片,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边上,把 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 沿直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 对折,使点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 落在对角线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 上的点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 处,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .若点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 在同一条直线上, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  2  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>   

Shape24

【分析】根据矩形的性质得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,根据折叠的性质得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,根据全等三角形的性质得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;根据相似三角形的性质即可得到结论.

【解答】解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是矩形,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 沿直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 对折,使点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 落在对角线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 上的点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 处,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> (负值舍去),

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

故答案为:2 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查了翻折变换(折叠问题),全等三角形的判定和性质,相似三角形的判定和性质,矩形的性质,正确的识别图形是解题的关键.

三、解答题:本大题有7个小题,66.解答应写出文字说明、证明过程或演算步骤.

17.(6分)以下是圆圆解方程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的解答过程.

解:去分母,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

去括号,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

移项,合并同类项,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

圆圆的解答过程是否有错误?如果有错误,写出正确的解答过程.

【分析】直接利用一元一次方程的解法进而分析得出答案.

【解答】解:圆圆的解答过程有错误,

正确的解答过程如下:

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

去括号,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

移项,合并同类项,得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】此题主要考查了解一元一次方程,正确掌握解方程的步骤是解题关键.

18.(8分)某工厂生产某种产品,3月份的产量为5000件,4月份的产量为10000件.用简单随机抽样的方法分别抽取这两个月生产的该产品若干件进行检测,并将检测结果分别绘制成如图所示的扇形统计图和频数直方图(每组不含前一个边界值,含后一个边界值).已知检测综合得分大于70分的产品为合格产品.

1)求4月份生产的该产品抽样检测的合格率;

2)在3月份和4月份生产的产品中,估计哪个月的不合格件数多?为什么?

Shape25

【分析】1)根据题意列式计算即可;

2)分别求得3月份生产的产品中,不合格的件数和4月份生产的产品中,不合格的件数比较即可得到结论.

【解答】解:(1 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

答:4月份生产的该产品抽样检测的合格率为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

2)估计4月份生产的产品中,不合格的件数多,

理由:3月份生产的产品中,不合格的件数为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

4月份生产的产品中,不合格的件数为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 估计4月份生产的产品中,不合格的件数多.

【点评】本题考查了频数分布直方图,扇形统计图,正确的理解题意是解题的关键.

19.(8分)如图,在 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 中,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 分别在 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边上, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

2)设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的面积是20,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的面积.

Shape26

【分析】1)由平行线的性质得出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,即可得出结论;

2由平行线的性质得出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,即可得出结果;

先求出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,易证 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,由相似三角形的面积比等于相似比的平方即可得出结果.

【解答】1)证明: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

2)解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

解得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查了相似三角形的判定与性质、平行线的性质等知识;熟练掌握相似三角形的判定与性质是解题的关键.

20.(10分)设函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时,函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的最大值是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的最小值是 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值.

2)设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,且 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;当 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .圆圆说:“ <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 一定大于 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ”.你认为圆圆的说法正确吗?为什么?

【分析】1)由反比例函数的性质可得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ;可求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值和 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值;

2)设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,且 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,将 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,代入解析式,可求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,即可判断.

【解答】解:(1 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的增大而减小, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的增大而增大,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 最大值为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 最小值为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

得: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

2)圆圆的说法不正确,

理由如下:设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,且 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 时, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 圆圆的说法不正确.

【点评】本题考查了反比例函数的性质,掌握反比例函数的性质是本题的关键.

21.(10分)如图,在正方形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 中,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边上,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的平分线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,与 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的延长线交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长.

2)连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

求证:点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边的中点.

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值.

Shape27

【分析】1)根据 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,可以得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长,然后根据正方形的性质,可以得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长,再根据平行线的性质和角平分线的性质,可以得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长,从而可以得到线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长;

2要证明点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 边的中点,只要证明 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 即可,然后根据题目中的条件,可以得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的条件,从而可以证明结论成立;

根据题意和三角形相似,可以得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的比值,从而可以得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值.

【解答】解:(1 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 在正方形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 中, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 平分 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的中点,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

2证明: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

即点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的中点;

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,则 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

知, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

Shape28

【点评】本题考查正方形的性质、相似三角形的判定与性质、全等三角形的判定与性质、勾股定理,解答本题的关键是明确题意,利用数形结合的思想解答.

22.(12分)在平面直角坐标系中,设二次函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是实数, <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)若函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的对称轴为直线 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,且函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的表达式.

2)若函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,其中 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求证:函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

3)设函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 和函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的最小值分别为 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的值.

【分析】1)利用待定系数法解决问题即可.

2)函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,其中 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,可得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,推出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,即 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,推出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是方程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的根,可得结论.

3)由题意 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,根据 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,构建方程可得结论.

【解答】解:(1)由题意,得到 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,解得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

解得 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 3

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>


2 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,其中 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是方程 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的根,

即函数 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的图象经过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>


3)由题意 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

【点评】本题考查二次函数的图象与系数的关系,二次函数的性质等知识,解题的关键是熟练掌握待定系数法,学会利用参数解决问题,属于中考常考题型.

23.(12分)如图,已知 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的两条直径,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是半径 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的中点,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

1)设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的半径为1,若 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求线段 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的长.

2)连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,设 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 交于点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

求证: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,求 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 的度数.

Shape29

【分析】1)解直角三角形求出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,再证明 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,利用直角三角形斜边中线的性质即可解决问题.

2过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,交 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> .想办法证明四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是平行四边形可得结论.

想办法证明 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,推出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,推出 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是等腰直角三角形即可解决问题.

【解答】1)解: <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是直径,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是等边三角形,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>


2证明:过点 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,交 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,连接 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> ,同理 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 四边形 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是平行四边形,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>


 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>  <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a> 是等腰直角三角形,

 <a href="/tags/54/" title="试卷" class="c1" target="_blank">试卷</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1007/" title="浙江省" class="c1" target="_blank">浙江省</a> <a href="/tags/1085/" title="杭州" class="c1" target="_blank">杭州</a> <a href="/tags/1185/" title="浙江" class="c1" target="_blank">浙江</a>

Shape30

【点评】本题属于圆综合题,考查了等边三角形的判定和性质,相似三角形的判定和性质,平行四边形的判定和性质,等腰直角三角形的判定和性质等知识,解题的关键是学会添加常用辅助线,构造特殊四边形解决问题,属于中考压轴题.