题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060439-98894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060439-15915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060439-80017.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060440-79920.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060440-34534.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060440-83642.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-35775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-61364.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-91893.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-37529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-54750.png)
解析
试题分析:首先分别求出命题
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-58538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-25413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-91893.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-35775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-61364.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-58538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-25413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-58538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-25413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-91893.png)
试题解析:若命题
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-58538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-13538.png)
若命题
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-25413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060443-91349.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060443-17467.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060443-72751.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-35775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-61364.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-58538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-25413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-58538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-25413.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060443-56095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060444-73811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060441-37529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060442-54750.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060407-38871.png)
①“若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060338-44442.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060338-31283.png)
②“全等三角形的面积相等”的否命题;
③“若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060338-44251.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060338-41902.png)
④“若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060339-12450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060339-64018.png)
其中真命题的序号为 .
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060318-61938.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060318-59097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060304-72491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060304-63332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060304-15864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060305-12819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060305-25977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060305-59889.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102060257-81817.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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