If there are               people driving，there will be              air pollution．

A．less，less            B．less，mole           C．more，less             D．fewer，less

完形填空

通读下面短文，掌握其大意，然后从各题后的四个选项中，选择最佳答案。

　　Small cars may take the place of (代替）big cars in the future (将来) . There is 1 for only two people in such a car. If everyone 2 such a car, there will be less pollution (污染) 3 the air. There will also be more space for 4 cars in cities; and the streets will be less crowded. The little cars will cost 5 less . Driving will be 6 , too, as these little cars can go only 65 kilometres per hour. If big cars are still used along with the small 7 , two sets of road will be 8 in the future . Some roads will be used 9 the big, fast cars, and 10 roads will be needed for the slower small ones .

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Each year there are an increasing number of cars on roads，as millions of new cars are produced．One out of every six Americans works at putting together the parts of cars，driving trucks，building roads or filling cars with gas．Americans couldn't live without cars!

Most Americans find it hard to think what life would be without a car．However，some have realized the serious problem caused by cars．The polluted air is harmful and dangerous to health．

One way to get rid of the polluted air is to design a new car．That is what several large car factories are trying to do．But to build the new car is easier said than done．Progress in this field has been slow．

Another way is to replace the car engine with something else．Engineers are working on some new cars．Many makers believe that it will take years to develop a practical model that pleases people．

To prevent the world from being polluted by cars，we'll have to make some changes．Americans，for example，have to cut down the number of their cars．They are encouraged  to travel and go to work by bike．Riding a bike is thought to help keep the air clean．

But this change does not come easily．A large number of workers may find themselves with no jobs if a car factory closes down．And the problem of air would become less important than that of unemployment．

Although ears have brought us a better life，they have also brought us new problems．

1．Some large car factories in the U．S．A are trying to make a new kind of car which _______．

A．is clean in itself                                 B．is used to clean streets

C．is easier to make                                       D．does not pollute the air

2．If the number of cars is cut down，the most serious problem to American workers is to _____．

A．lose their jobs                                          B．pollute their environment

C．go to work on foot                                  D．make their factories richer

3．The writer wants to tell us that _________．

A．riding a bike is the only way out

B．the number of caps must be cut down

C．people wouldn't live without cars

D．cars bring us not only a better life，but also serious problems

4．Which fact does the passage provide?

A．About one sixth of American workers are working in car factories．

B．The hest way to get rid of air pollution is to change the car engine for something else．

C．It isn't easy to change the way of life in the U．S．A．

D．In the U．S．A，bikes will surely take the place of cars in the future．

5．Which is the best title for the passage?

A．A New way to Get Rid of Polluted Air             B．Cars and Polluted Air

C．Many Serious Problems in the U．S．A         D．Changes in Car Production

完形填空

通读下面短文，掌握其大意，然后从各题后的四个选项中，选择最佳答案。

　　Small cars may take the place of (代替）big cars in the future (将来) . There is 1 for only two people in such a car. If everyone 2 such a car, there will be less pollution (污染) 3 the air. There will also be more space for 4 cars in cities; and the streets will be less crowded. The little cars will cost 5 less . Driving will be 6 , too, as these little cars can go only 65 kilometres per hour. If big cars are still used along with the small 7 , two sets of road will be 8 in the future . Some roads will be used 9 the big, fast cars, and 10 roads will be needed for the slower small ones .

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根据短文内容，选择正确的选项。
The world itself is becoming much smaller by using modern traffic and modern communication means(交流方式). Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest is pollution. To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it.
Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in a place, men moved to another place. But this is no longer true. Man is now slowly polluting the whole world.
Air pollution is still the most serious. It’s bad to all living things in the world, but it is not only one kind of pollution. Water pollution kills fish and pollutes drinking water. Noise pollution makes us become angry more easily.
Many countries are making rules to fight against pollution. They stop the people from burning coal in houses and factories in the city, and from blowing dirty smoke into the air.
The pollution of SO2 is now the most dangerous problem of air pollution. It is mostly caused by heavy traffic. It is certain that if there are fewer people driving, there will be less air pollution.
The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must try to control the growth of population at the same time.
【小题1】Our world is becoming much smaller .

A．because the earth is being polluted day and night

B．because science is developing

C．because of the rise in population

D．because the earth is blown away by the wind every year

【小题2】Thousands of years ago, life was  it is today.

A．much easier than	B．as easy as
C．as hard as	D．much harder than

【小题3】Pollution comes in many ways. We can even hear it. Here “it” means .

A．water pollution	B．air pollution
C．noise pollution	D．rubbish

【小题4】What is the most dangerous problem of air pollution?

A．CO2

B．H2O

C．SO2

D．CO

【小题5】Air pollution is the most serious kind of pollution because .

A．it’s bad to all living things in the world

B．it makes much noise

C．it has made our rivers and lakes dirty

D．it makes us become angry more easily

阅读理解.

　　A kind of little cars may some day take the place of today's ones. If everyone drives such cars in the future, there will be less pollution in the air. There will also be more space for parking cars in cities, and the streets will be less crowded． Three such cars can fit in the space now needed for one car of the usual size.

　　The little cars will cost much less to own and to drive. Driving will be safer, too, as these little cars can go only 65 kilometers an hour. The cars of the future will be fine for getting around a city, but they will not be useful for long trips. Little cars will go 450 kilometers before needing to stop for more gasoline.

　　If big cars are still used alone with the small ones, two sets of roads will be needed in the future. Some roads will be used for the big, fast cars and other roads will be needed for the slower small ones.

根据短文内容，选择正确答案.

（1）There is much pollution in the air today because ________.

［　　］

A．people drive big cars

B．people drive little cars

C．the cars go 65 kilometers an hour

D．the car can go 450 kilometers an hour

（2）The usual size of cars today is ________ that of future cars.

［　　］

A．much smaller than

B．much the same as

C．three times as large as

D．a little larger than

（3）We can learn from the passage that ________.

［　　］

A．big cars cost less to own and to drive

B．big cars are not useful for long trips

C．the cars of the future will be much smaller than today's cars

D．small cars are faster than big ones

（4）The streets will be less crowded because ________.

［　　］

A．there will be fewer cars in the future

B．there will be fewer passengers in the streets

C．driving future cars will be safer

D．future cars will be much smaller

（5）Two sets of roads may be needed in the future because ________.

［　　］

A．there will be too many cars in the future

B．more and more people will get around a city

C．big cars and little cars may be used alone with each other

D．it looks more beautiful to have two sets of roads

阅读理解.

　　A kind of little cars may some day take the place of today's ones. If everyone drives such cars in the future, there will be less pollution in the air. There will also be more space for parking cars in cities, and the streets will be less crowded． Three such cars can fit in the space now needed for one car of the usual size.

　　The little cars will cost much less to own and to drive. Driving will be safer, too, as these little cars can go only 65 kilometers an hour. The cars of the future will be fine for getting around a city, but they will not be useful for long trips. Little cars will go 450 kilometers before needing to stop for more gasoline.

　　If big cars are still used alone with the small ones, two sets of roads will be needed in the future. Some roads will be used for the big, fast cars and other roads will be needed for the slower small ones.

根据短文内容，选择正确答案.

（1）There is much pollution in the air today because ________.

［　　］

A．people drive big cars

B．people drive little cars

C．the cars go 65 kilometers an hour

D．the car can go 450 kilometers an hour

（2）The usual size of cars today is ________ that of future cars.

［　　］

A．much smaller than

B．much the same as

C．three times as large as

D．a little larger than

（3）We can learn from the passage that ________.

［　　］

A．big cars cost less to own and to drive

B．big cars are not useful for long trips

C．the cars of the future will be much smaller than today's cars

D．small cars are faster than big ones

（4）The streets will be less crowded because ________.

［　　］

A．there will be fewer cars in the future

B．there will be fewer passengers in the streets

C．driving future cars will be safer

D．future cars will be much smaller

（5）Two sets of roads may be needed in the future because ________.

［　　］

A．there will be too many cars in the future

B．more and more people will get around a city

C．big cars and little cars may be used alone with each other

D．it looks more beautiful to have two sets of roads