After a busy day of work and play, the body needs to rest. Sleep is necessary for good hea

After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the day. The rest that you get while sleeping makes it possible for your body to prepare itself for the next day.
There are four levels of sleep, each being a little deeper than the one before. As you sleep, your body relaxes (放松) little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts (变换) back and forth from one level of sleep to the other.
Though your mind slows down, you will dream from time to time. Scientists who study sleep point out that when dreaming occurs, your eyeballs begin to move more quickly (although your eyelids are closed). This stage of sleep is called REM, which stands for rapid eye movement.
If you have trouble falling asleep, some people recommend (建议) breathing very slowly and very deeply. Other people believe that drinking warm milk will make you drowsy. There is also an old suggestion that counting sheep will put you to sleep.
【小题1】The text suggests that not getting enough sleep might make you . A．suffer from poor healthB．feel tired and nervousC．dream more oftenD．breathe quickly【小题2】During REM, . A．you move restlesslyB．you start dreaming C．your mind stops workingD．your eyeballs move quickly【小题3】The underlined word drowsy in the last paragraph probably means . A．lazyB．sleepyC．relaxedD．pleased【小题4】A good title for this text might be . A．DreamsB．SleepC．Good HealthD．Work and RestA

(答案→)A 解析：文章主要介绍睡眠的一些知识，睡眠的几个阶段，睡眠的重要性，缺乏睡眠的危害。【小题1】推理题：从第一段的句子：Sleep is necessary for good health.可知如果缺乏睡眠，就会有健康的问题。选A【小题2】细节题：从第三段的句子：This stage of sleep is called REM, which stands for rapid eye movement. 可知REM状态，眼球转动的很快。选D【小题3】猜词题：从前面的句子：falling asleep,可知这个单词是“困”的意思。选B【小题4】主旨题：文章主要介绍睡眠的信息。选B

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