阅读短文，选择正确答案。 Do you get enough sleep? With so much homework it"s often diffi - 初中英语试题 - 超级试练试题库

阅读短文，选择正确答案。     Do you get enough sleep? With so much homework it"s often difficult to get the rest you need. But you need
to try, because sleep keeps you healthy and it stops you getting fat.
     Recently, a group of US scientists did a study (调查) of kids aged between8 and 13. The study found that if
kids sleep for just one extra (额外的) hour each day, the chance of their getting fat is cut by about 30 percent
(30%).
     Why? when people don"t get enough sleep, they become tired. When they are tired, they don"t exercise
enough. Also, kids like snacks. If they are awake (醒着的) an extra hour or two each day, they have more time
to eat snacks or other unhealthy foods.
     So, how much sleep should you get? Scientists suggest 10 to 11 hours a night for kids aged 5 to 12. For
older kids, eight to nine hours will do. 1. How many reasons are given why people might get fat without enough sleep? [     ]
A. 3
B. 2
C. 1 2. If you are under 10, how long do the scientists advice you to sleep? [     ]
A. 10 to 11 hours.
B. 8 to 9 hours.
C. 8 to 13 hours. 3. Where was the study done by the scientists? [     ]
A. In China.
B. In Britain.
C. In America. 4. What does "eight to nine hours will do" mean? [     ]
A. Eight to nine hour"s sleep will be good and enough.
B. Eight to nine hour"s sleep will be too long.
C. Eight to nine hour"s sleep will help get fat. 5. What does the passage talk about? [     ]
A. How to get long sleep.
B. How to keep fat.
C. Enough sleep makes people healthy and slim. (苗条)

1-5: BACAC

完形填空。     I can"t remember when I started collecting litter. But it was when I got tired of 1 litter nearby that I realized
no one else was going to pick it up.
     I live near a forest in Ohio, America. I can walk there   2 three minutes. I used to love going there to play
with my dog. But one day there was   3 much litter there that I became very unhappy. I decided to clean up the
forest, and I wanted to   4 happy when I went again. I made my first trip to clean the forest that afternoon. I
took a big black rubbish bag with me. Ten minutes   5 I started to pick up litter, my bag was full! There were
cans, bottles, broken glass and newspapers in it.
     From then on, I   6 to the forest four times a year to pick up litter. I often stay there for three hours. It
makes me feel   7 to do something for the environment. After each trip, I look through all the litter that I"ve
collected. If   8 of it is recyclable (可回收利用的), I"ll keep it. I can"t understand why people drop litter. But I
will keep on picking it up   9 they stop dropping it. I know I am only doing a small bit   10 the earth, but I still
think it is important.

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(     ) 1. A. seeing
(   ) 2. A. after
(    ) 3. A. such
(    ) 4. A. make
(    ) 5. A. after
(   ) 6. A. had gone
(    ) 7. A. tired
(   ) 8. A. many
(     ) 9. A. until
(    ) 10. A. helped

B. throwing
B. for
B. very
B. feel
B. later
B. have gone
B. sad
B. few
B. after
B. to help

C. dropping
C. with
C. so
C. look
C. before
C. go
C. interesting
C. any
C. as soon as
C. help

D. cleaning
D. in
D. too
D. find
D. of
D. will go
D. great
D. much
D. when
D. helping

阅读理解。

     The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but
during that time, we have changed our planet in many ways. Many of the things that we have done are good, but
more are not good for the earth.
     Water pollution
     A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and
the water. As a result, many rivers and lakes are now dead.
     Air pollution
     In big cities, factories, as well as cars, trucks and buses are the main cause of air pollution. Many people in
cities now have serious health problems. For example, Mexico city used to be a beautiful sunny capital, but today
it is always covered by thick brown clouds.
     Soil pollution
     In order to have a good harvest, most of the farmers use chemicals too much in their fields. That"s bad for
the soil. But this kind of pollution is difficult to stop.
     Hope for the future
     These problems are very serious for our future, so all of us should do something to improve our
environment. If we can stop pollution, our planet will become more and more beautiful and our health will be
better. Let"s be greener people!

1. _____ have made the earth change a lot.

[ ]

A. Human beings
B. Animals
C. Plants
D. People in other planets

2. There are _____ kinds of pollution in this passage.

[ ]

A. two
B. three
C. four
D. five

3. Pollution isn"t a big problem now, is it?

[ ]

A. Yes, it is.
B. No, it isn"t.
C. Yes, there is.
D. No, there isn"t.

4. Which sentence is NOT right according to the passage?

[ ]

A. Most of things that we have done are good for our planet.
B. We must stop the factories from pouring waste water into the rivers and lakes.
C. Because of water pollution, many rivers and lakes are now dead.
D. Water pollution is very serious nowadays.

5. Which sentence is RIGHT?

[ ]

A. Though Mexico city is always covered by thick brown clouds, it"s still a beautiful sunny capital.
B. Air pollution can make people sick.
C. Now fewer farmers use chemicals in the fields.
D. Factories, cars, trucks and buses are the main cause of soil pollution.

根据短文内容，判断正(T)误(F)。

     Stop and listen! What do you hear? You may hear many different sounds. Some of those sounds may be
noise. Noise is a loud or unwanted sound.
     Noise can be caused by many kinds of machines, such as motorcycles, jet planes (喷气式飞机), farm
tractors, and power motors. And, to some people, rock music is also a noise.
     What happens to people who live near noisy machines or use them over a period of time? Doctors have
found that these people have trouble in sleeping. And most importantly, constant (连续的) loud noise can cause
loss of hearing.
     Scientists use a unit of measure called a decibel (分贝) to measure the loudness of a sound. The sound of a
quiet room, for example, measures 35 decibels. Talking measures between 40 and 65 decibels. Sounds from
traffic and from some rock bands measure over 120 decibels. Noise at such high level causes the greatest
hearing loss.
(     ) 1. According to the passage, noise is all sounds that you can hear.
(     ) 2. A "decibel" is a machine that makes loud noise.
( ) 3. Loud noise can help people sleep better.
(     ) 4. Not all people think that rock music is a noise.
(     ) 5. We can infer (推断) from the passage that noise is a serious problem.

根据短文内容，回答问题。

     The students were having their chemistry class. Miss Li was telling the children what water was like. After
that, she asked her students, "What is water?" No one answered for a few minutes. Miss Li asked again, "Why
don"t you answer my question? Didn"t I tell you what water is like?"
     Just then, a boy put up his hand and said, "Miss Li, you told us that water has no color and no smell. But
where to find such kind of water? The water in the river behind my house is always black and it has a bad
smell." Most of the children agreed with him.
     "I"m sorry, children," said the teacher, "our water is getting dirtier and dirtier. That"s a serious problem."
1. Why didn"t the children answer the teacher"s question at first?
   ________________________________________________
2. Please use a sentence to describe what water is.
   ________________________________________________
3. Why does the water in the river have color and smell?
   ________________________________________________
4. Do you think the boy who answered the teacher"s question is stupid?
   ________________________________________________
5. What did other students think of the boy?
   ________________________________________________

综合填空。根据短文内容，用所给单词的适当形式填空。

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