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!

(   56._____ have made the earth change a lot.

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

(  )57.There are _____ kinds of pollution in this passage.

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

(   )58.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.

(   )59.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.

(   )60.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.

When people talk about air pollution, they are usually thinking about outdoor air   46  . But do you know that there is also air pollution inside homes, offices, hotels and other buildings? The air in your home can be 2 to 100 times more polluted than the air outdoors! In fact, some American doctors say that 50% of illnesses have   47   to do with polluted indoor air.

A lot of pollution comes from indoor activities   48   smoking and cooking. As most people  49   about 80%-90% of their time inside buildings, it is important to take indoor air pollution seriously, too.

Air pollution influences our health 50  . When the air is polluted, not only young children and old people  51   from it,  52   people with health problems suffer as well. Indoor air pollution can   53   people’s eyes, noses and throats. Air pollution, both indoor and outdoor, can also  54 lung cancer and heart disease! In the great London fog in 1952, 4, 000 people died in a few days  55   the pollution! It is said that half a million young children and women die each year in India because of indoor air pollution!

(   )46.A.pollution               B.pollute                       C.polluted

(   47.A.nothing                 B.everything                 C.something         

(   48.A.as well as              B.such as                            C.instead of          

(  )49.A.take                B.cost                          C.spend                

(   50.A.in many ways        B.in many things           C.in many houses  

(   51.A.bear                      B.stand                         C.suffer

(   )52.A.and                      B.but                            C.or                     

(   )53.A.hit                       B.hurt                          C.pollute               

(   )54.A.cause                   B.get                            C.give                         

(   )55.A.because of           B.thanks to                   C.because

Project Hope _____ to help the poor children go to school.

A.aims                       B.aiming                C.purpose             

The supermarket provides customers （顾客）____ plastic bags for free.

A.on                           B.with                   C.of                     

I can’t stand _____ for you so long.

A.to wait                          B.waiting               C.waits                

There is _____ pollution in the world. We must stop it.

A.much too                      B.too much            C..too many

We have known each other _____ ten years ago.

A.for　　　　　　　　　　　　　　　 B.ever　　　　　　　　　 C.since

—How long _____ you _____ here?

—For about two years so far.

A.have; studied                 B.did; live              C.do; stay             

She has _____ this car for nearly ten years.

A. buy　　　　　　　　　　　 B. bought　　　　　　　　　　 C. had

Because of noise pollution,many teenagers can hear ________65-year-old people do.

A.not better than  B.no better than  C.no well than