题目
题型:期末题难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092517-63603.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092518-28256.png)
核心考点
举一反三
B.任意一个无理数,它的平方不是有理数
C.存在一个有理数,它的平方是有理数
D.存在一个无理数,它的平方不是有理数
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092507-25788.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092508-84413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092508-16847.png)
B.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092508-32556.png)
C.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092509-57750.png)
D.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092509-58933.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092502-82777.png)
B.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092502-75387.png)
C.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092503-94927.png)
D.
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092503-93364.png)
①命题p:
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092449-89492.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092449-17906.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092450-84233.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092450-54804.png)
②代数式sin
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092450-25102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092450-31065.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092450-88583.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092450-82006.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092450-66383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092451-57949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092451-16009.png)
③将函数f(x)=2sin(2x﹣
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092451-68163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092451-69992.png)
④命题“
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092451-49906.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103092452-38505.png)
其中正确的命题的序号是( ) (把所有正确的命题序号写在横线上).
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