题目列表(包括答案和解析)
阅读理解。
No one knows why we sleep, but it's certain that we need to. People who are prevented from sleeping begin to suffer obvious effects after a few days----they think less clearly, and they fall asleep during the working hours; some may have hallucinations(幻觉).
There are no rules about sleep. Generally speaking, grown-ups sleep about 7 and half hours each night and probably more than 60 percent get between seven and eight hours. But perhaps eight per cent are quite happy with 5 hours or less, and four percent or so find that they want ten hours or more. If you feel all right, you're probably getting enough sleep. The important thing is not to worry how much other people get----their needs may be different. Exercise doesn't seem to increase the need for sleep----office workers, for example, sleep for about as long as people doing physically active work.
Children sleep more than grown-ups----perhaps 14 to 18 hours soon after birth, going down to grown-up levels by early teen-age. Sleep patterns also tend to be different in the elderly, who may sleep less at night than they did when younger, find sleep getting more broken, and often make it a rule to sleep during the daytime.
(1) According to the passage, some people are unable to think clearly because ________.
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A.they have hallucinations
B.they feel sleepy during the working hours
C.they don't have enough sleep
D.they are certain to be kept from going to bed
(2) Which of the following is true? ________.
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A.All grown-ups must have at least eight-hour sleep
B.Most of grown-ups sleep for seven or eight hours
C.Quite a few people need only 5 hours or less for them to sleep
D.No grown-ups sleep more than ten hours
(3) Whether you have got enough sleep is judged by ________.
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A.how many hours you have slept
B.how many hours you need to sleep
C.whether you do exercise and physical work
D.whether you feel fresh and energetic
(4) According to the passage, a boy of 14 years old sleeps ________.
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A.as long hours as a grown-up
B.much longer hours than a grown-up
C.for 14 hours each night
D.for less than 8 hours per night
(5) Who finds they sleep less during the night and must take a nap during the day? ________.
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"Wanted by the FBI." To the murderer, or the bank robber, these are the most frightening words in the world. When the criminal hears them, he knows that six thousand trained persons are after him.
Why should he be so afraid? There are thousands of cities and villages where he can hide, and forests and deserts ,as well. Besides, he's usually rich with stolen money.
Money can make it easier to hide. With money, the criminal can even pay a doctor to operate on his face and make him hard to recognize. But the criminals know that as public enemies, they can be found by the FBI no matter where they hide.
They know every trick the criminal knows and many more. If he makes just one mistake, they' Il get him. That' s why the man who is wanted can' t sleep. That' s why he becomes nervous, an d why he jumps at every- sound.
The FBI began on May 10th, 1924. General Harlan Stone chose Edgar Hoover, a young lawyer, to head the new agency (机构). "What we need is a wholly new kind of police force," he said. "Criminals today are smart. They use stolen cars and even planes to make their gateways. They have learned to open any lock, using advanced technology. We can' t beat them with old methods. We have to train officers to work scientifically."
Edgar Hoover quietly went ahead with his plans. He picked his men carefully. They had to be between the ages of 25 and 35. He wanted only men with good manners and good character. When working as his officers, they would have to meet all kinds of people. Hoover wanted men who could handle a teacup as well as a gun. But the FBI cannot help in every police problem. It can look into only certain crimes against the government. Solving all other crimes is the duty of local police forces.
60. The FBI makes it almost impossible for a wanted man to ____.
A. be operated on his face B. hide in forests or deserts
C. escape being caught D. break the law
61. Edgar Hoover was a ____ before he worked with the FBI.
A. policeman B. doctor C. lawyer D. officer
62. The FBI was set up in order to ____.
A. help solve every police problem B. stop crimes against the government
C. reduce the work by local police forces D. fight crimes scientifically
63. The underlined phrase "handle a teacup" probably means ___.
A. have good manners B. serve tea to customers
C. play tricks with teacups D. hold teacups firmly
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