第2部分：閱讀判斷（第16-22題，每題1分，共7分）

下面的短文后列出了7個(gè)句子，請(qǐng)根據(jù)短文的內(nèi)容對(duì)每個(gè)句子做出判斷：如果該句提供的是正確信息，請(qǐng)選擇A；如果該句提供的是錯(cuò)誤信息，請(qǐng)選擇B；如果該句的信息文中沒有提及，請(qǐng)選擇C.

下面的短文后列出了7個(gè)句子，請(qǐng)根據(jù)短文的內(nèi)容對(duì)每個(gè)句子做出判斷：如果該句提供的是正確信息，請(qǐng)選擇A；如果該句提供的是錯(cuò)誤信息，請(qǐng)選擇B；如果該句的信息文中沒有提及，請(qǐng)選擇C.

Are You Getting Enough Sleep?

What happens if you don't get enough sleep? Randy Gardner, a high school student in the United States, wanted to find out. He designed an experiment on the effects of sleeplessness for a school science project. With doctors watching him carefully, Gardner stayed awake for 264 hours and 12 minutes. That's eleven days and nights without sleep.

What effect did sleeplessness have on Gardner? After 24 hours without sleep, Gardner started having trouble reading and watching television. The words and pictures were too blurry (模糊). By the third day, he was having trouble doing things with his hands. By the fourth day, Gardner was hallucinating (產(chǎn)生幻覺). For example, when he saw a street sign, he thought it was a person. He also imagined he was a famous football player. Over the next few days, Gardner's speech became so slurred (不清楚) that people couldn't understand him. He also had trouble remembering things. By the eleventh day, Gardner couldn't pass a counting test. In the middle of the test he simply stopped. He couldn't remember what he was doing.

When Gardner finally went to bed, he slept for 14 hours and 45 minutes. The second day he slept for twelve hours, the third night he slept for ten and one-half hours, and by the fourth night, he had returned to his normal sleep schedule.

Even though Gardner recovered quickly, scientists believe that going without sleep can be dangerous. They say that people should not repeat Randy's experiment. Tests on white rats have shown how serious sleeplessness can be. After a few weeks without sleep, the rats started losing their fur(皮毛). And even though the rats ate more food than usual, they lost weight. Eventually the rats died.

During your lifetime, you will probably spend 25 years or more sleeping. But why? What is the purpose of sleep? Surprisingly, scientists don't know for sure. Some scientists think we sleep in order to replenish(補(bǔ)充)brain cells. Other scientists think that sleep helps the body to grow and to relieve stress. Whatever the reason, we know that it is important to get enough sleep.

16. Randy Gardner studied the effects of over over-sleeping.

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17. During the experiment, Gardner slept for two hours every night.

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18. During the experiment, Gardner had trouble speaking clearly.

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19. It took four days for Gardner to recover from the effects of the experiment.

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20. Going without sleep is not dangerous for white rats.

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21. Scientists are not sure why we need sleep.

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22. People sleep less than they used to.

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（責(zé)任編輯：vstara）

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