题目
题型:单选题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130433-99071.png)
A.4 | B.5 | C.6 | D.7 |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130433-90851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130434-55526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130434-55526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130434-43945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130434-85147.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130434-40923.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130435-64201.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130431-81936.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130431-79847.png)
A.(a,b)和(b,c)内 |
B.(-∞,a)和(a,b)内 |
C.(b,c)和(c,+∞)内 |
D.(-∞,a)和(c,+∞)内 |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130426-52059.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130426-72904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130424-84880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130421-98732.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130422-32974.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130422-75086.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130417-31407.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130417-82820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819130417-82820.png)
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