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  3. Each year there is an increasing number of cars on roads and streets as millions of new cars are produced. One out of every six

Each year there is an increasing number of cars on roads and streets as millions of new cars are produced. One out of every six

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问题     Each year there is an increasing number of cars on roads and streets 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 of filling cars with gas. Americans won’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 of air pollution by cars. The polluted air is poisonous(有毒的)and dangerous to health.
    One way to get rid of(排除) the polluted air is to build a new kind of car. That’s what several of the large car factories are trying to do. But to build a clean car is easier said than done. Progress in this field has been slow.
    Another way is to take the palce of the car engine(发动机)by something else. Engineers are now working on some new cars. Many makers believe that it will take years to develop a practical model that pleases man.
    To prevent the world from being polluted by cars, we’ll have to make some changes in the way many of us live. Americans, for example, have to cut down on 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 without jobs if a car factory closed down. And the problem of air pollution would become less important than that of unemployment(失业).
    Although cars have brought us a better life, they have also brought us new problems.
Which fact does the passage provide?
选项 A、About one sixth of American workers are working in car factories.
B、The best way to get rid of air pollution is to change the car engine by something else.
C、It isn’t easy to change the way of life in the USA.
D、In the USA bikes will surely take the place of cars in the future.
答案C
解析 A选项说，1／6的美国人都在汽车工厂里工作，不符合第一段内容，文中说1／6的美国人从事与汽车相关的工作，包括开车和修路，B选项错在“The best way”，因为文中第四段说，用别的东西取代现在发动机只是“Another way”。C选项说改变美国人的生活方式并不容易，文中说了很多解决空气污染的方法，但是要么就是很难实现，要么就会带来其他的问题，所以这个细节可以从文章中推断出来。D选项文中既没有提到也没法从文中推断，所以最后答案选C。
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