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

3.We should follow so  cial rules and never break 1     .

2.Scientists around the world are working to d      new medicine for cancer,

1.Every morning ，Mr. Gao always goes to work early to a  the rush hour (交通高峰期）.

  What is pollution?

  Pollution means a 1 dirty or harmful things to land, air,water and so on. It is bad for animals and plants, and it even makes people's health in d 2 . In our daily life, we can see different kinds of pollution in many places. There are t 3 main forms of pollution ：land pollution, air pollution and water pollution.

  Land pollution is caused by solid(固体的) waste, such as cans, bottles and some o 4 things. It makes the environment look very bad. However ， air pollution is more s 5 than land pollution. It is much worse in cities and towns because of the fumes (废气)from traffic and the waste from human activities. When people d 6 their cars ， they produce fumes with C02 ， N02 and S02. The fumes does great h 7 to people's health. And human activities are also the main r 8 for water pollution. In some places ， it has caused the shortage of fresh water.

  Different kinds of pollution will c 9 many health problems. People have realized (意识到)they must change this serious situation.

  We have only one e 10 . We must try our best to help protect our environment for the future wherever we are

1._______ 2.______ 3.______

4.______5.______ 6.______

7. ______8.______ 9.______ 10______

  Our planet is in trouble ！ Almost every day we seem to hear of another problem affecting the environment, such as acid rain (酸雨).global warming ， the damage (损害)of rainforests and other living places for wild animals and so on.

Nowadays ， most of us know that humans have caused these problems. Many of us are very worried about the future of our planet. If we can't find ways to deal with the problems, the envionment will become even worse.

  It all sounds so depressing (令人沮丧的). but hope is always there ！ Every one of us can do something to help slow down and change some of the damage. We all have a duty to protect our environment. We must learn to live while thinking of the future. We must learn to use our natural resources (资源)including air ， fresh water ， forests ， wildlife ， farmland and seas without destroying them.

  Don't make too much rubbish any more. Don't burn rubbish or bury (S) it in the earth. Both of these actions can be dangerous for the environment. In fact,we can reuse (再利用) much of the rubbish. We should do what we can to protect our planet so that our children and grandchildren will have a better world.

根据短文内容，选择正确答案。

(   ) 1. According to the passage ，we have"acid rain, global warming" because of _____ .

A.bad weather

B.too many animals

C.too many plants

D.too much pollution

(   ) 2. The writer thinks that _____in the second paragraph.

A.all the people should know the environment problems

B.we should find ways to solve the environment problems

C.humans are dangerous to our planet

D.we should worry about our own future

(   ) 3. The underlined word " duty "in the passage means in Chinese.

A.责任 B.品质

C精神 D.素质

(   ) 4. According to the writer, the best way to deal with the rubbish is to_____ .

A.use it again

B.bury it in the earth

C.put it in the mountains

D.throw it into the sea

(   ) 5. The best title of the passage may be_____

A.What Is Pollution

B.How to Deal with Rubbish

C.How to Help Protect the Environ-ment

D.What to Get from Our planet

A ：What are you going to do?

B ：We are going to p   1     trees on the hill.

A ：There are many trees there. W 2 are you going to plant more?

B ：The more we plant ，the b 3 our environment will be. You know ，air p 4 has been a serious problem. We must do everything we can to stop it from getting w 5 Trees can help make the air clean. As we know,n 6 of us likes pollution.

A ：You're right. We can see many factories pouring dirty water into rivers or sea. That's b 7 behavior.

B: Yes. It's h 8 to the earth.

A ：So the government should take m 9 to stop th^m from doing so.

B ： And we should pay a 10 to protecting the environment.

A ： Let's try our best together.

1._______2._______3._______

4._______5._______6.       

7._______8._______9. _______10._______

(   ) 5. Tom is very good at science_______ his brother Jimmy knows nothing about it.

A. if B. when

C. while D. because

(   ) 4.—Mom, where is my dictionary? I can't find it.
―Your brother has just_______it_______

A. looked ;up     B. taken ; away
C. taken;off    D. put;up

(   ) 3. The price of houses have _______rapidly these days. We can hardly

afford it.

A. risen    B. raised
C. improved    D. created