[填空题](Judge) ______ from the number of cars, there were not many people at the club yet.

[填空题](Judge) （　） from the number of cars, there were not many people at the club yet.

[填空题](Judge)（）from the number of cars, there were not many people at the club yet.

[填空题](judge) ______ from the number of cars, there were not many people at the club yet.

[填空题](judge)______from the number of cars, there were not many people at the club yet.

[填空题]If American cars were slightly more efficient, the United States would not be dependent on foreign oil.

[填空题]The number of private cars in our town has kept (grow) ______ all these years.

[填空题]Two hundred (steal)______cars were returned to their owners.

[填空题]The number of private cars in our town (keep) ______ growing all these years.

[单项选择]A great number of graduate students were driven into the intellectual slum where in the United States the intellectual poor became the classic poor.
A. in which
B. at which
C. when
D. while

[填空题]Pollutants from cars create a ______ which people in cars are most exposed to.

[填空题]Pollutants from cars cause ______ , which can damage buildings and pollute rivers.

[单项选择]
Each year there is an increasing number of cars on roads and street are 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 place 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
A. C．Many Serious Problems in the US