题目内容

----Where are you now?

----Well, I have arrived at _______ is called “the West lake”.

A. which B. that C. where D. what

 

D

【解析】

试题分析:考查名词性从句。句中what引导宾语从句,在从句中作主语。句意:——你现在在哪里?——哦,我已经到了叫做“西湖”的地方。故D正确。

考点:考查名词性从句

 

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For years scientists have been worried about the effects of air pollution on the earth's natural conditions. Some believe the air inside many houses may be more dangerous than the air outside.

Most scientists agree that every modern house has some kind of indoor pollution. People began to notice the problem in the early 1970s. When builders began making houses and offices, they did not want to waste energy. To do this they built buildings that limited the flow of air between inside and outside. They also used man-made building materials which are now known to let out harmful gases.

As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building green plants.

Scientists believe that a plant's leaves absorb the pollutants (污染物). In exchange the plant lets out oxygen through its leaves. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants.

1.Indoor air pollution may be more dangerous than the air outside mainly because .

A. the building are too high

B. the flow of air indoor is limited

C. the building materials are harmful

D. people don't want to waste energy

2.Some kind of indoor pollution can be found in .

A. all kinds of offices B. all kinds of houses

C. every modern house D. every old house

3.In the last paragraph the word“ absorb” may mean .

A. take in B. bring up C. give out D. turn into

4.Scientists believe that plants can .

A. change oxygen into pollutants

B. absorb all the pollutants

C. make your houses more prettier

D. absorb pollutions and let out oxygen

5.According to the last paragraph, we should to clean the air.

A. plant all kinds of plant

B. plant more trees.

C. have the same kind of plant

D. have different kinds of plants

 

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