We should do to help protect the environment. It's our duty to do so.A. something usefulB. anything usefulC. useful somethingD. useful anything 题目和参考答案——青夏教育精英家教网—

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( ) 4. We should do to help protect the environment. It's our duty to do so.

A. something useful

B. anything useful

C. useful something

D. useful anything

4. A 形容词修饰不定代词something,anything等词时，要放在不定代词的后面；some及some-用于肯定句中，而any及any-用于否定句及疑问句中。

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( ) 5. To fight against pollution a long time. That means we have a long way to go.

A. costs B. spends

C. continues D. requires

The world is not only hungry but also thirsty for water. This may seem strange to you ，since 1 70% of the earth's surface is covered with water. But about 97% of that is sea water or salt water. Man can only drink and 2 the other 3% of fresh water from rivers,lakes,underground and so on. And we can not even use all of that 3 some of it has been made dirty.

Earth Day is April 22. But on all other days,we must also remember how 4 water is. The water that we use is the most important natural resource on the earth. Today we 5 serious water problems. One of them is water pollution. All kinds of things from cars,factories,farms and homes make our rivers,lakes and ocean Polluted water is very bad for people to drink. And dirty water is bad for fish,too.

How do cars and factories make our water dirty? First they pollute the air. Then when it 7 ,the rain water makes our drinking water dirty. Dirty rain,called acid rain (酸雨).is also bad for plants,animals and buildings. Scientists say that 8 30 years,more than half of the people in the world won't have enough clean water. We have to learn how to 9 wasting water. One of the first steps is to develop ways of reusing it.

But 10 every large city reused its water,we would still not have enough water. So we should make use of sea water by removing the salt in it. If we can take these steps,fresh water won't be used up.

( ) 1. A. only B. already

C. nearly D. hardly

( ) 2. A. use B. eat

C. afford D. produce

( ) 3. A. until B. when

C. before D. because

( ) 4. A. interesting B. different

C. important D. exciting

( ) 5. A. face B. save

C. know D. discover

( ) 6. A. nice B. dirty

C. clean D. ugly

( ) 7. A. rains B. blows

C. snows D. turns

( ) 8. A. for B. in

C. during D. after

( ) 9. A. enjoy B. finish

C. keep D. stop

( ) 10. A. as usual B. since then

C. even though D. in fact

Noise Pollution Stop!Listen!What do you hear? You may hear many different sounds. Some of those sounds may be noisy. Noise is loud or unwanted sound.

Noise can be caused by many kinds of machines,such as motorcycles,jet planes,tractors (拖拉机)and so on. And,to some people,rock bands also cause noise.

What happens to people living near noisy conditions? Doctors find that these people have trouble in sleeping. But most seriously,constant (持续的)loud noise can cause a loss of hearing.

Scientists measure the loudness of a sound by decibel (分贝).The bigger the number of decibel is,the noisier it will be. The sound of a quiet room,for example,measures 35 decibels. Talking measures between 40 and 65 decibels. Sounds from the traffic and some rock bands can measure over 120 decibels. Noise at this high level causes the greatest hearing loss.

根据短文内容，完成下列任务。任务一：将画线部分译成汉语。

任务二:根据短文内容，回答下列问题。

2. What is noise?

3. What can cause noise?

4. According to the passage,what can loud noise cause?

任务三：根据短文内容,选择最佳答案。

( ) 5. Study the chart below. Which room would be the quietest?

RoomNoise Level

A 35 decibels

B 120 decibels

C 130decibels

D 40 decibels

4. We all don't like pollution.(同义句转换）

pollution.

4. I'm very t and I want to get something to drink.

( ) 9. ―Would you like something to drink?

―No,thanks. I'm not .

A. hungry B. thirsty

C. tired D. free

5. 这片树林里以前有很多小鸟，可现在都不见了。

There used to be many birds in the woods,but now they_________.

5. How long have you felt like this?(同义句转换）

have you like this?

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