It still remains a question life exists on any other planet in the solar system. A．whyB．whether C．howD．where 题目和参考答案——青夏教育精英家教网—

题目内容

It still remains a question _____ life exists on any other planet in the solar system.

A．why

B．whether

C．how

D．where

解析试题分析：考查主语从句。本题中的it是形式主语，真正的主语从句是后面的whether life exists on any other planet in the solar system. 句意:在太阳系里的其它星球上是否存在着生命这件事情仍然是一个问题。根据句意说明本题的主语从句表示的是疑问的句意。ACD的语义和句意不符。故B正确。
考点：考查主语从句
点评：在句中作主语的名词性从句称为主语从句，主语从句所对应的谓语动词通常用第三人称单数的形式。为了整个句子的平衡，主语从句经常后置，并用it充当形式主语(此时， that引导的主语从句若不放在句首，可以省略引导词that)。解答这类题目，关键在于分析清楚句子结构。通过判断引导词在从句中所作的成分及意义，来选择正确的引导词。

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【小题1】In Ireland there are two o______________ languages: English and Irish.
【小题2】He i______________ all the “No Smoking” signs and lit up a cigarette.
【小题3】Internet makes it possible for us to c______________ with our friends from all over the world.
【小题4】As a result of the severe earthquake in Wenchuan, people s______________ great losses.
【小题5】This atlas (地图集) contains fifty maps, i______________ six of North America.
【小题6】He looks honest, but a______________ he is a rogue (a man who is dishonest and immoral).
【小题7】After so many years, I still r______________ him as soon as he came in the room.
【小题8】Two hours later, I f______________ came up with a good idea to solve the problems.
【小题9】If you want to pass your exams, you’d better change your a______________ towards study.
【小题10】You won’t get well unless you follow your doctor’s a______________.

根据下列句子及所给单词的首字母，写出各单词正确的完全形式(每空限写一词)。

1.In Ireland there are two o______________ languages: English and Irish.

2.He i______________ all the “No Smoking” signs and lit up a cigarette.

3.Internet makes it possible for us to c______________ with our friends from all over the world.

4.As a result of the severe earthquake in Wenchuan, people s______________ great losses.

5.This atlas (地图集) contains fifty maps, i______________ six of North America.

6.He looks honest, but a______________ he is a rogue (a man who is dishonest and immoral).

7.After so many years, I still r______________ him as soon as he came in the room.

8.Two hours later, I f______________ came up with a good idea to solve the problems.

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