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【327956】2024年四川省巴中市中考数学试题

时间:2025-01-20 20:49:48 作者: 字数:16684字
简介:

绝密★启用前

200651-2024年四川省巴中市中考数学试题


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.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 中最小的实数是(      )

A0    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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>     C1    Dπ <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

2.下列图形中,是轴对称图形的是(      )

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

3.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 自变量的取值范围是(      )

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

4.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

5.实数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 在数轴上对应点的位置如图所示,下列结论正确的是(      )

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

6.如图,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,一块含有  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的直角三角板按如图所示放置.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的大小为(      )

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

7.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的对角线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的周长为12,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的周长为(      )

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

A4    B5    C6    D8

8.某班学生乘汽车从学校出发去参加活动,目的地距学校60km,一部分学生乘慢车先行  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,另一部分学生再乘快车前往,他们同时到达.已知快车的速度比慢车的速度每小时快20km,求慢车的速度?设慢车的速度为  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,则可列方程为(      )

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

9.一组数据  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,若去掉数据11,下列会发生变化的是(      )

A.平均数    B.中位数    C.众数    D.极差

10.“今有方池一丈,葭生其中央,出水一尺,引葭赴岸,适与岸齐.问:水深几何?”这是我国数学史上的“葭生池中”问题.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> (      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

A8    B10    C12    D13

11.如图,是用12个相似的直角三角形组成的图案.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> (      )

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

12.如图,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> .下列说法错误的是(      )

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的垂直平分线一定与  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

C.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 中点时,  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 是等边三角形

D.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 中点时,  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

二、填空题

1327的立方根为     

14.过五边形的一个顶点有          条对角线.

15.已知方程  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的一个根为  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,则方程的另一个根为      

16.如图,四边形ABCD  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的内接四边形,若四边形OABC为菱形,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的度数是      

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

17.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的对角线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,延长  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

18.若二次函数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的图象向右平移1个单位长度后关于  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 轴对称.则下列说法正确的序号为      .(少选得1分,错选得0分,选全得满分)

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 时,代数式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的最小值为3

对于任意实数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 一定成立;

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 为该二次函数图象上任意两点,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 时,一定有  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> .

三、解答题

19.(1)计算: 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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

2)求不等式组 ①② <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的解集.

3)先化简,再求值:  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

20.为了解全校学生对篮球、足球、乒乓球、羽毛球四项球类运动的喜爱情况,在全校随机抽取了  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 名学生进行问卷调查,每名学生只选择一项球类运动填写问卷.将调查结果绘制成如下统计图,请你根据图中所提供的信息解答下列问题.

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>       ,并补全条形统计图.

(2)若该校共有1200名学生,请估计喜欢乒乓球运动的学生有多少名?

(3)学校羽毛球队计划从甲、乙、丙、丁四名同学中挑选两名同学加入球队.请用画树状图或列表的方法计算恰好选中甲、乙两名同学的概率.

21.某兴趣小组开展了测量电线塔高度的实践活动.如图所示,斜坡  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的坡度  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 处测得电线塔  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 顶部  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的仰角为  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 处测得电线塔  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 顶部  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的仰角为  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

(1)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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 离水平地面的高度  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

(2)求电线塔  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的高度(结果保留根号).

22.如图,在平面直角坐标系中,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 与反比例函数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的图象交于  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 两点,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的横坐标为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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的值及点  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的坐标.

(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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 上一点,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 在直线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 上运动,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的最小值.

23.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 内接于  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的延长线于点  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

(1)求证:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的切线.

(2)求证:  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的长.

24.综合与实践

(1)操作与发现:平行四边形和梯形都可以剪开拼成一个矩形,拼接示意图如图1、图2.在图2中,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 为梯形,  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 边上的点.经过剪拼,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 为矩形.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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>       

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

(2)探究与证明:探究将任意一个四边形剪开拼成一个平行四边形,拼接示意图如图3、图4、图5.在图5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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 是四边形  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 边上的点  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 是拼接之后形成的四边形.

通过操作得出:  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的比值为      

证明: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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 为平行四边形.

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

(3)实践与应用:任意一个四边形能不能剪开拼成一个矩形?若能,请将四边形  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 剪成4块,按图5的方式补全图6,并简单说明剪开和拼接过程.若不能,请说明理由.

25.在平面直角坐标系中,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 经过  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 两点,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 轴交于点  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 是抛物线上一动点,且在直线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的上方.

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

(1)求抛物线的表达式.

(2)如图1,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 轴,交直线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的坐标.

(3)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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> .记  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的面积分别为  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 取得最大值时,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的值.

参考答案

一、单选题

1. B

解: 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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

最小的数是  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

故此答案B


2. D

解:ABC选项中的形不能找到这样的一条直线,使形沿一条直线折叠,直线两旁的部分能互相重合,所以不是轴对形,

D选项中的形能找到这样的一条直线,使形沿一条直线折叠,直线两旁的部分能互相重合,所以是轴对形.

故此答案D


3. C

解: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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

故此答案C


4. B

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 不是同类项,不能合并,故A选项不符合意;

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,故B选项符合意;

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,故C选项不符合意;

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,故D选项不符合意.

故此答案B


5. D

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

察四个选项选项D符合意.

故此答案D


6. 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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

故此答案A


7. B

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 是平行四形,O  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 中点,

E  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 中点,OE  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的中位线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

∵ ▱ <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的周长为  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的周长为  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

故此答案B.


8. A

解:的速度  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的速度  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,根据意可得

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> .故此答案A


9. B

解:数据  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

平均数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,中位数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

众数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,极差  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

去掉数据11  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

平均数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,中位数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

众数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,极差  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

中位数化,故此答案B


10. C

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

故此答案C


11. C

解:12个相似的直角三角形,

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

故此答案C.


12. D

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,如1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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>   

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的垂直平分线上,

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的垂直平分线一定与  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,故选项A正确,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,故B正确,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的垂直平分线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 是等三角形,故C正确,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,并延  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>     

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 根据三角形三条中线交于一点得点  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 是等三角形,

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,故选项D不正确,符合意.

故此答案D


二、填空题

13. 3

解:33=27

27的立方根是3


14. 2

从五形的一个点出,可以向与点不相2点引线,即能引出2线


15. 4

解:方程的另一个根m

方程  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 有一个根  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>


16. 60°

解:OABC菱形,  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

周角定理得  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

ABCDO的内接四形, += <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

+= <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>


17.  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

解:如F  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,垂足H

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>


18. ①③

解:二次函数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 象的轴为线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

而二次函数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 象向右平移1度后关于  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 轴对称.

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,故符合意;  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 取最小  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,故不符合意;

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 轴为线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,函数取最小  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,函数值为  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 于任意  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 一定成立,故符合意;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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,不  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,不符合意,舍去,故符合.

上,符合意的有①③


三、解答题

19. 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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

解:(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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

2 ①② <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

由不等式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 由不等式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

原不等式的解集  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>     <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,原式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>


20. (1)200,图见详解; (2)312名; (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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> (名  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

欢乒乓球的人数:  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> (名  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

统计图

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> (名  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

答:估欢乒乓球运的学生有312名;

3)解:画

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 一共有12种等可能出果,符合条件的果有2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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 恰好中甲、乙两名同学的概率  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>


21. (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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> (2)电线塔  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的高度  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

1)解:斜坡  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的坡度  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

2)解:作  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

答:电线  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的高度  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>


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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

1)解: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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 与反比例函数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 象交于  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 两点,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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的横坐标为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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 反比例函数  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> .


23. 见详解

1明: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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,且OD  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的半径,DF  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的切线

2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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

3)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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的内接四形,

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 经检验,符合.


24. (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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> (2)1见详解;(3)见详解

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

2)解:,由操作知,点E  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 中点,将四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> E  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 得到四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的中点,将四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> E  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 得到四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,将四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> H  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 得到四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,将四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 放在左上方空出,

 <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 三点共线,同理  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 三点共线

由操作得,  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 平行四形;

3)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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

,取  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,垂足  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,将四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 至四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,将四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 至四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,将四  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 放置左上方空出,使得点C与点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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 重合,点N对应  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 所求矩形.

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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

由操作得,  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 三点共线,同理  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

同理  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

由操作得,  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,同理,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,同理  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 能放置左上方空出,

按照以上操作可以拼成一个矩形.


25. (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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

1)解: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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

抛物线解析式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的解析式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的解析式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 于点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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 重合,不合意舍去),  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> yN,作  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> Q

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的解析式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的解析式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> 的解析式  <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/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a> ,  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

 <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>  <a href="/tags/51/" title="试题" class="c1" target="_blank">试题</a> <a href="/tags/55/" title="数学" class="c1" target="_blank">数学</a> <a href="/tags/1074/" title="四川省" class="c1" target="_blank">四川省</a> <a href="/tags/1106/" title="巴中" class="c1" target="_blank">巴中</a> <a href="/tags/1004/" title="四川" class="c1" target="_blank">四川</a>

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