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【327916】2024年河北省中考数学试题

时间:2025-01-20 20:40:58 作者: 字数:24132字
简介:

绝密★启用前

200762-2024年河北省中考数学试题


学校:___________姓名:___________班级:___________考号:___________


题号

总分

得分






注意事项:

1.答题前填写好自己的姓名、班级、考号等信息

2.请将答案正确填写在答题卡上


一、单选题

1.如图显示了某地连续5天的日最低气温,则能表示这5天日最低气温变化情况的是(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

A <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> B <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> C <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> D <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

2.下列运算正确的是(      )

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

3.如图,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 交于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 关于直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 对称,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的对称点分别是点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .下列不一定正确的是(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     C <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

4.下列数中,能使不等式  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 成立的  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的值为(      )

A1    B2    C3    D4

5.观察图中尺规作图的痕迹,可得线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 一定是  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

A.角平分线    B.高线    C.中位线    D.中线

6.如图是由  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 个大小相同的正方体搭成的几何体,它的左视图是(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>   

A <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     B <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     C <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     D <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

7.节能环保已成为人们的共识.淇淇家计划购买500度电,若平均每天用电  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 度,则能使用  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 天.下列说法错误的是(      )

A.若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> B.若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

C.若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 减小,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 也减小D.若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 减小一半,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 增大一倍

8.若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是正整数,且满足 个相加个相乘 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的关系正确的是(      )

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

9.淇淇在计算正数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的平方时,误算成  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 2的积,求得的答案比正确答案小1,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (      )

A1    B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     D1  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

10.下面是嘉嘉作业本上的一道习题及解答过程:

如图,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 中,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 平分  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的外角  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的中点,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 并延长交  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

求证:四边形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是平行四边形.

证明:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

∴①      

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>       ).

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 四边形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是平行四边形.

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

若以上解答过程正确,①②应分别为(      )

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

11.直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 与正六边形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的边  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 分别相交于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,如图所示,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

12.在平面直角坐标系中,我们把一个点的纵坐标与横坐标的比值称为该点的“特征值”.如图,矩形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 位于第一象限,其四条边分别与坐标轴平行,则该矩形四个顶点中“特征值”最小的是(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

(第11题图)

A.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> B.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> C.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> D.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

13.已知  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 为整式,若计算  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的结果为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (      )

A.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> B.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> C.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> D.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

14.扇文化是中华优秀传统文化的组成部分,在我国有着深厚的底蕴,如图,某折扇张开的角度为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,扇面面积为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,该折扇张开的角度为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,扇面面积为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 关系的图像大致是(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

A.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> B.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> C.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> D.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

15.“铺地锦”是我国古代一种乘法运算方法,可将多位数乘法运算转化为一位数乘法和简单的加法运算.淇淇受其启发,设计了如图(1)所示的“表格算法”,图(1)表示  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,运算结果为3 036.图(2)表示一个三位数与一个两位数相乘,表格中部分数据被墨迹覆盖,根据图(2)中现有数据进行推断,正确的是(      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

A. “20”左边的数是16

B. “20”右边的“ <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ”表示5

C. 运算结果小于6 000

D. 运算结果可以表示为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

16.平面直角坐标系中,我们把横、纵坐标都是整数,且横、纵坐标之和大于0的点称为“和点”.将某“和点”平移,每次平移的方向取决于该点横、纵坐标之和除以3所得的余数(当余数为0时,向右平移;当余数为1时,向上平移;当余数为2时,向左平移),每次平移1个单位长度.

例:“和点”  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 按上述规则连续平移3次后,到达点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,其平移过程如下: <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

若“和点”  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 按上述规则连续平移16次后,到达点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,则点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的坐标为(      )

A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>     D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

二、填空题

17.某校生物小组的9名同学各用100粒种子做发芽实验,几天后观察并记录种子的发芽数分别为:897390867586899589,以上数据的众数为      

18.已知 ,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 均为正整数.

1)若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,则  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>       

2)若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,则满足条件的  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的个数总比  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的个数少      个.

19.如图,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的面积为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 边上的中线,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的五等分点,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的四等分点,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的中点.

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

() <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的面积为      

() <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的面积为      

三、解答题

20.如图,有甲、乙两条数轴.甲数轴上的三点 ,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 所对应的数依次为 ,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,乙数轴上的三点 ,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 所对应的数依次为 ,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

(1)计算 ,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 三点所对应的数的和,并求  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的值;

(2)当点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 与点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上下对齐时,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 恰好分别与点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上下对齐,求  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的值.

21.甲、乙、丙三张卡片正面分别写有  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,除正面的代数式不同外,其余均相同.

1) 将三张卡片背面向上并洗匀,从中随机抽取一张,当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,求取出的卡片上代数式的值为负数的概率;

2) 将三张卡片背面向上并洗匀,从中随机抽取一张,放回后重新洗匀,再随机抽取一张.请在表格中补全两次取出的卡片上代数式之和的所有可能结果(化为最简),并求出和为单项式的概率.

第一次

第二次

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 

 

 

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 

 

22.中国的探月工程激发了同学们对太空的兴趣.某晚,淇淇在家透过窗户的最高点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 恰好看到一颗星星,此时淇淇距窗户的水平距离  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,仰角为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ;淇淇向前走了  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 后到达点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,透过点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 恰好看到月亮,仰角为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,如图是示意图.已知,淇淇的眼睛与水平地面  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的延长线交  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 于点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

(注:图中所有点均在同一平面)

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

(1)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的大小及  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的值;

(2)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的长及  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的值.

23.情境:图1是由正方形纸片去掉一个以中心  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 为顶点的等腰直角三角形后得到的.

该纸片通过裁剪,可拼接为图2所示的钻石型五边形,数据如图所示.

(说明:纸片不折叠,拼接不重叠无缝隙无剩余)

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

操作:嘉嘉将图1所示的纸片通过裁剪,拼成了钻石型五边形.

如图3,嘉嘉沿虚线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 裁剪,将该纸片剪成三块,再按照图4所示进行拼接.根据嘉嘉的剪拼过程,解答问题:

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

1)直接写出线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的长;

2)直接写出图3中所有与线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 相等的线段,并计算  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的长.

探究:淇淇说,将图1所示纸片沿直线裁剪,剪成两块,就可以拼成钻石型五边形.

请你按照淇淇的说法设计一种方案,在图5所示纸片的  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 边上找一点P(可以借助刻度尺或圆规),画出裁剪线(线段  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> )的位置,并直接写出  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的长.

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

24.某公司为提高员工的专业能力,定期对员工进行技能测试,考虑多种因素影响,需将测试的原始成绩x(分)换算为报告成绩y(分).已知原始成绩满分150分,报告成绩满分100分,换算规则如下:

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

(其中  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是小于150的常数,是原始成绩的合格分数线,80是报告成绩的合格分数线)

公司规定报告成绩为80分及80分以上(即原始成绩为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 以上)为合格.

(1)甲、乙的原始成绩分别为95分和130分,若  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,求甲、乙的报告成绩;

(2)丙、丁的报告成绩分别为92分和64分,若丙的原始成绩比丁的原始成绩高40分,请推算  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的值:

(3)下表是该公司100名员工某次测试的原始成绩统计表:

原始成绩(分)

95

100

105

110

115

120

125

130

135

140

145

150

人数

1

2

2

5

8

10

7

16

20

15

9

5

直接写出这100名员工原始成绩的中位数;

中的中位数换算成报告成绩为90分,直接写出该公司此次测试的合格率.

25.已知  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的半径为3,弦  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 中,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .在平面上,先将  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 按图1位置摆放(点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 与点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 重合,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 内),随后移动  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,使点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 在弦  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上移动,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 始终在  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上随之移动,设  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

(1)当点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 与点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 重合时,求劣弧  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的长;

(2)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,如图2,求点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离,并求此时  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的值;

(3)设点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

当点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 在劣弧  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上,且过点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的切线与  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 垂直时,求  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的值;

直接写出  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的最小值.

26.如图,抛物线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 过点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,顶点为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .抛物线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 其中  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 为常数,且  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,顶点为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

1) 直接写出  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的值和点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的坐标.

2) 嘉嘉说:无论  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 为何值,将  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的顶点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 向左平移2个单位长度后一定落在  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .

淇淇说:无论  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 为何值,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 总经过一个定点.

请选择其中一人的说法进行说理.

3) 当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,

求直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的表达式;

作直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的交点到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 轴的距离恰为6时,求  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 轴交点的横坐标.

4) 设  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的交点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的横坐标分别为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上,横坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上,横坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .若点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是到直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离最大的点,最大距离为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 到直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离恰好也为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,直接用含  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的式子表示  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .

参考答案

一、单选题

1. A

解:由五日气温 ℃℃℃℃℃ <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

气温先下降,然后上升,再上升,再下降.

故此答案A


2. C

解:A  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 不是同类项,不能合并,故此选项不符合意;

B  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故此选项不符合意;

C  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故此选项符合意;

D  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故此选项不符合意.

故此答案C


3. A

解:由轴对形的性得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 选项不符合意,故此答案A


4. A

解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

符合意的是A

故此答案A


5. B

解:由作可得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 一定是  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的高线.

故此答案B.


6. D

解:通看可以确定出左视图一共有  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 列,每列上小正方体个数从左往右分别为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .故此答案D


7. C

解:淇淇家购买500,平均每天用  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 度,能使用  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 天.

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故A不符合意;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故B不符合意;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 减小,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 增大,故C符合意;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 减小一半,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 增大一倍,表述正确,故D不符合意;

故此答案C


8. A

解:由意得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

故此答案A


9. C

解:由意得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (舍),

故此答案C


10. D

明:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ∴①  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ).

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是平行四形.

故此答案D


11. B

解:正六形每个内角  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

而六  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的内角和也  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

故此答案B


12. B

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 矩形,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,且  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 矩形四个点中特征最小的是点B.B.


13. A

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .A.


14. C

设该扇面所在的半径  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 折扇开的角度  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,扇面面积为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的正比例函数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 关系的像是原点的一条射线.C.


15. D

设这个三位数与个两位数分别为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 小于10的正整数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,如1,意得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,不是正整数,不符合意,故舍去;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,如2)所示.

 

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>       <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>       <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

1     2     3

A选项20”的数是  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故本选项不符合意;B选项20” <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 表示4,故本选项不符合意;根据意可得,表格中被墨迹覆盖的数据应为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,如3.运算果可以表示  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故D选项符合意;当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,运算果大于  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故C选项不符合.D.


16. D

解:由点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 可知横、之和除以3所得的余数1而向上平移1位得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,此横、之和除以3所得的余数2而向左平移1位得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,此横、之和除以3所得的余数1,又要向上平移1  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,因此发现规和点横、之和除以3所得的余数0,先向右平移1位,之后按照向上、向左,向上、向左不断重复的律平移,

和点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 按上述规则连续平移16次后,到达点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 按照和点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 反向运16次求点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 理解,可以分两种情况:

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 先向右1位得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,此横、之和除以3所得的余数0应该  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 向右平移1位得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故矛盾,不成立;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 先向下1位得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,此横、之和除以3所得的余数1则应该向上平移1位得到  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故符合意,那么点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 先向下平移,再向右平移,当平移到第15,共向下平移了8次,向右平移了7次,此标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,即  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,那么最后一次若向右平移则为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,若向左平移则为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

故此答案D


二、填空题

17. 89

解:几天后察并记录种子的芽数分别为897390867586899589

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的次数最多,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 以上数据的众数89


18.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

解:(1  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,而  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

2 ,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 正整数.

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 为连续的三个自然数,而  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的整数有  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 个,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的整数有  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 个,

足条件的  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的个数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的个数少  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (个).


19.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

解:(1  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的面积为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上的中线

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的五等分点,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的四等分点,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的中点,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,在  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 中,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

∴ ≌ <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的面积为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

2)在  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 中,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

∴ ≌ <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 三点共线

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 中,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的面积为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>


三、解答题

20. (1)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (2)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

1)解:甲数上的三点 ,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 对应的数依次 ,, <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .

2)解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 与点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上下对齐时,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 恰好分与点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上下对齐

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .


21. 1) 【解】当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 取出的卡片上代数式的值为负数的概率为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 2) 补全表格如下:

第一次

第二次

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 所有等可能的结果有9种,其中和为单项式的结果有4种,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 和为单项式的概率为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .【思路分析】1)先分别求出当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时三个代数式的值,再利用概率公式计算即可

22. (1)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (2)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

1)解:由意可得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

2)解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>


23. () <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> () <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的长为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

解:如  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

意可得,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 矩形,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

由拼接可得,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

由正方形的性可得,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 等腰直角三角形,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 等腰直角三角形,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

正方形的边长为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

2  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 等腰直角三角形,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

,以  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 为圆心,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 半径画弧交  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,交  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 分割线

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,符合要求,

或以  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 心,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 半径画弧,交  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,交  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 分割线

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 长为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>


24. (1)甲、乙的报告成绩分别为7692分;(2)125(3)130  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

1)解:当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,甲的告成绩为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 分,

乙的告成绩为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 分;

2)解:丙的原始成绩为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 分,丁的原始成绩为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 分,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故不成立,舍;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故不成立,舍;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

⑤⑥解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,且符合意,

上所述  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

3)解:100工,且成排列好,

中位数是第5051工成的平均数,由表格得第5051工成都是130分,中位数130

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,故不成立,舍;

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,符合意,

由表格得到原始成绩为110110以上的人数  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

合格率  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>


25. (1) π <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (2)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (3)  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

1)解:如  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的半径  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 三角形,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 长为 ππ <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

2)解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是矩形,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,而  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

3)解:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的切线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 垂直,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 过圆心,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,而  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 矩形,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,即  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

,当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 中点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,此  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 最短,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,而  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 中点,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 由(2)可得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (不符合意的根舍去),

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的最小值为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>


26. 1) 【解】  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 抛物线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 过点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,顶点为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 抛物线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .2) 选择嘉嘉.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 向左平移2个单位长度后得到对应点的坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 代入  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 上,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 嘉嘉说法正确.选择淇淇.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,当  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 过定点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 淇淇说法正确.(任选一人的说法进行说理即可)(3  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 顶点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .设直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的表达式为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,将  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 代入,得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的表达式为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> . 如图(1),  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> (等于6时,直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 重合,不符合题意),  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 交点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,交点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .当直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 过点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 设直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 此时直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 轴交点的横坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ;同理当直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 过点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 时,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 此时直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 轴交点的横坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

图(1)(4 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是由  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 通过旋转  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,再平移得到的,两个函数图像的形状相同.如图(2),连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 四边形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是平行四边形.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是到直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离最大的点,最大距离为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 到直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离恰好也为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 此时  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 重合,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 重合.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的横坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的横坐标为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,解得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> .

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>

图(2【思路分析】4)由题意可得  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是由  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 通过旋转  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,再平移得到的,两个函数图像的形状相同,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,连接  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,可得四边形  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是平行四边形.因为点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 是到直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离最大的点,最大距离为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,点  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 到直线  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 的距离恰好也为  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> ,所以此时  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 重合,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/553/" title="河北" class="c1" target="_blank">河北</a> <a href="/tags/893/" title="河北省" class="c1" target="_blank">河北省</a> 重合,再进一步利用中点坐标公式解答即可.