试题与答案

表面活性物质: 在工业上有较大的用途。当排入江河中,会产生严重的污染,导致水质恶

题型:填空题

题目:

表面活性物质:

在工业上有较大的用途。当排入江河中,会产生严重的污染,导致水质恶化。试回答下列问题:

(1)该物质可以被生物降解,其降解的最终产物是什么?

(2)当它在水体中尚未被生物降解时,有人认为,它会导致水体缺氧。这句话是否符合事实,为什么?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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题型:单项选择题

In country after country, talk of nonsmoker’s right is in the air. While a majority of countries have taken little (51) no action yet, some 30 nations have introduced legislated steps to control smoking. Many laws have been introduced in other countries to (52) clear the air for nonsmokers, or to cut cigarette consumption.

Smoking is harmful (53) the health of people. World governments should conduct serious campaigns against it. (54) on cigarette advertisements, plus health warnings on packages and ban on public smoking in certain places, (55) as theaters, cinemas and restaurants, are the most popular tools used by nations in (56) of nonsmokers or in controlling smoking. But world attention is also focusing on another step (57) will make the smoker increasingly self-conscious and uncomfortable about his habit. Great efforts should be made to (58) young people especially of the dreadful consequences of taking up the habit. And cigarette price should be raised.

In the long run, (59) is no doubt that everybody would be much better-off if smoking were banned altogether but many people are not (60) for such drastic action.

56().

A.short 

B.support 

C.some 

D.any

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