It’s not easy being a teenager(13至19岁青少年)—nor is it easy being the parent of a teenager. You can make your child feel angry, hurt, or misunderstood by what you say without realizing it yourself. It is important to give your child the space he needs to grow while gently letting him know that you you’ll still be there for him when he needs you.

Expect a lot from your child, just not everything. Except for health and safety problems, such as drug use or careless driving; consider everything else open to discussion. If your child is unwilling to discuss something, don’t insist he tell you what’s on his mind. The more you insist, the more likely that he’ll clam up. Instead, let him attempt to solve things by himself. At the same time, remind him that you’re always there for him if he seeks advice or help. Show respect for your teenager’s privacy(隐私). Never read his mail or listen in on personal conversions.

Teach your teenager that the family phone is for the whole family. If your child talks on the family’s telephone for too long, tell him he can talk for 15 minutes, but then he must stay off the phone for at least an equal period of time. This not only frees up the line so that other family members can make and receive calls, but teaches your teenager moderation(节制). Or if you are open to the idea, allow your teenager his own phone that he pays for with his own pocket money or a part–time job.

64. The main purpose of the text is to tell parents ___________.

A. how to deal with a teenager

B. how to respect a teenager

C. how to understand a teenager

D. how to help a teenager grow up

65. What does the phrase “clam up” in Paragraph 2 probably mean?

A. become excited           B. show respect      C. refuse to talk      D. seek help

66. The last paragraph is about how to teach a teenager _________.

A. to use the phone in a sensible(明智的) way

B. to pay for his own telephone

C. to share the phone quickly

D. to answer the phone quickly

67. What should parents do in raising a teenager according to the text?

A. Not allow him to learn driving or take drugs.

B. Give him advice only when necessary.

C. Let him have his own telephone.

D. Not talk about personal things with him.

   The sea has always interested man. From it he can get food, minerals, and treasure. For thousands of years, he could sail on it. But he could not go far beneath its surface.

   Man wants to explore deep into the sea. However, he is not a fish. He must breathe air, so he can’t stay under the water’s surface for any length of time. To explore deep water, man faces even more dangers and problems.

   A diver who wants to stay under water for more than a few minutes must breathe air or a special mixture of gases. He can wear a diving suit and have air pumped to him from above. He can carry a tank of air on his back and breathe through a hose(软管) and a mouthpiece. Water weighs 800 times as much as air. Tons of water pushes against a diver deep in the sea. His body is under great pressure.

   When a diver is under great pressure, his blood takes in some of the gases he breathes. As he rises to surface, the water pressure becomes less. If the diver rises too quickly, the gases in his blood form bubbles(气泡). The diver is then suffering from the bends(潜函病). The bends can cause a diver to double up in pain. They can even kill him.

60. On the whole, this text is about _________.

   A. special mixtures of gases in deep sea.      B. the problems a diver faces in deep sea.

   C. air pressure under the surface of sea water.  D. a kind of illness that man suffers in the sea.

61. The text does not say so, but it makes you think that ____________.

   A. deep-sea divers should be in good health.

   B. divers explore the deep sea only for treasure.

   C. there is a special mixture of gases under the sea.

   D. diving under the water too quickly causes a kind of illness.

62. Why does a diver get the bends?

   A. The air in his blood is used up.        B. His diving suit weighs too much.

   C. He comes to the surface too quickly.   D. He tries to do exercise under the sea.

63. From the text we can learn that _____________.

   A. man cannot stay under water for more than a few minutes.

   B. the sea began to interest man in the last few years.

   C. all divers will get the bends sooner or later.

   D. the bends may kill a diver.

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