39. What can be learned from the passage?

A. Parents are unhappy with their growing children.

B. Parents have suitable ways to talk with their teenagers.

C. Parents should be patient with their silent teenagers.

D. Parents should try to understand their teenagers.

B

The private automobile(私家车)has long played an important role in the United States. In fact, it has become a necessary and important part of the American way of life. In 1986, sixty-nine percent of American families owned at least one car, and thirty-eight percent had more than one. By giving workers rapid transportation, the automobile has freed them from having to live near their place of work. This has encouraged the growth of the cities, but it has also led to traffic problems.

For farm families the automobile is very helpful. It has made it possible for them to travel to town very often for business and for pleasure, and also to transport their children to distant schools.

Family life has been affected in various ways, The car helps to keep families together when it is used for picnics, outings, and other shared experiences. However, when teenage children have the use of the car, their parents can't keep an eye on them. There is a great danger if the driver has been drinking alcohol or taking drugs, or showing off by speeding or breaking down traffic laws. Mothers of victims(受害者)of such accidents have formed an organization called MADD(Mothers Against Drunk Driving). These women want to prevent further tragedies(悲剧). They have worked to encourage the government to limit the youngest drinking age. Students have formed a similar organization, SADD(Students Against Drunk Driving)and are spreading the same message among their friends.

For many Americans the automobile is a necessity. But for some, it is also a mark of social position and for young people, a sign of becoming an adult. Altogether, cars mean very much to Americans.

38. Which of the following best explains “the wall of silence” in the last paragraph ?

A. Teenagers talk a lot with their friends.

B. Teenagers do not want to understand their parents.

C. Teenagers do not talk much with their parents.

D. Teenagers talk little about their own lives.

37. What troubles Tina and Mark most is that 　　　　.

A. their daughter isn’t as lovely as before

B. they can’t read their daughter’s mind exactly

C. they don’t know what to say to their daughter

D. their daughter talks with them only when she needs help

36. “The door to his room is always shut” suggests that the son 　　　　.

A. is always busy with his studies 　　　　　　　 B. doesn’t want to be disturbed

C. keeps himself away from his parents 　　 D. begins to dislike his parents

34. A. newspaper　　　　 B. magazine　　　 　　 C. program 　　　　 　　　D. project

33. A. this 　　　　　　　 　　B. he 　　　　　　　 　　C. it 　　　　　　　　　 　　　D. that

32. A. promise　　　　　 　　 B. task 　　　　　　 　　C. belief 　　　　　　 　　　D. dream

31. A. rather 　　　　　　 　　B. but 　　　　　　 　　C. for 　　　　　　　　 　　　D. therefore

30. A. always 　　　　　 　　B. never 　　　　 　　C. seldom 　　　　　 　　　D. almost