1．Each year there is an increasing number of cars on roads and streets as millions of new cars and trucks are produced．One out of every six Americans work at putting together the parts of cars，driving trucks，building roads or filling cars and trucks with gas．Americans won't live without cars!
Most Americans would find it hard to think what life would look like without cars．However，some have realized the serious problems of the air pollution that is caused by the car．The polluted air becomes poisonous and dangerous to health．
One way to get rid of the polluted air is to build a car that does not pollute．That's what several of the large car factories have been 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 place of the car engine by something else．Inventors are now working on steam cars as well as electric 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 total cars．They are encouraged to travel and go to work by bicycle．Bicycling 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 closes down．Thus the problem of air pollution would become less important than that of unemployment．
Although cars have led us to a better life，they have also brought us new problems．
59．Large car factories are trying to build a clean car，C．
A．which is clean itself
B．which is used to clean streets
C．which does not pollute the air
D．which is easier to make
60．If the number of cars is cut down，the most serious problem to American workers isA．
A．to have no work to do
B．to keep the air clean
C．to get a better life
D．to go to work by bike
61．What is the conclusion of the writer？D
A．Bicycling is the only way out．
B．The number of cars must be cut down．
C．Cars bring us nothing but serious problems．
D．Cars bring us not only a better life but serious problems．
分析 本文介绍了美国人对汽车的依赖．分析了过多使用汽车对于空气的污染，以及减少汽车使用量在美国面临的具体问题．
解答 59．C细节理解题．根据第三段第一句One way to get rid of the polluted air is to design a new car that does not pollute．摆脱空气污染的一种方法是设计一辆新车，不污染．可知本题答案．故选C．
60．A推理判断题．根据最后一段提到的A large number of workers may find themselves with no jobs if a car factory closes down．如果汽车工厂关闭的话，许多工人会失业，可知本题答案．故选A．
61．D推理判断题．根据第二段提到的Most Americans find it hard to think what life would be without a car．美国人发现没有汽车生活会变得很困难，可知汽车非常重要；再根据However，some have realized the serious problem of air pollution by cars．可知汽车也带来了很多污染问题．故选D．
点评 本文是健康环保类阅读理解．做这类题材阅读理解时要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据．
