After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recove

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问题     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 previous day. The rest that you get while sleeping enables 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 muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other.
    Although your mind slows down, from time to time you will dream. Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly. This stage of sleep is called REM, which stands for rapid eye movement.
    If you have trouble falling asleep, some people recommend breathing very slowly and very deeply. Other people believe that drinking warm milk will help make you drowsy. There is also an old suggestion that counting sheep will put you to sleep!
A good title for this passage is ______.

选项 A、Sleep
B、Good Health
C、Play and Study
D、Work and Rest

答案A

解析 本题为大意理解题,应该以文章的开始句和结尾句为依据句来进行判断。由于文章的开始和结尾都涉及sleep的概念,所以可以确定A为正确选项。其他选项的内容在主题句和总结句中都没有出现,所以不是正确答案。
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