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问题 单项选择题

某污水的污染物类型数=4，且需预测浓度的水质参数数目=7，这类污水水质的复杂程度属（）。

A.复杂

B.中等

C.简单

D.一般

答案

参考答案：A

解析：此题比前面的题稍灵活点，在实务中往往也是这种情况。题目不管如何变，只要记准了，就可应万变。

单项选择题

I could easily perceive that his heart burnt to relieve his starving kids, but he seemed ashamed to ______ his inability to me.

A．discover

B．recover

C．demonstrate

D．impress
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选择题

In modern times, people have to learn to _____ all kinds of pressure although they are leading a

comfortable life.    [ ]

A. keep with  

B. stay with  

C. meet with  

D. live with
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