甘肃省庆阳第六中学2017-2018学年高二上学期期中考试英语试题

2017---2018学年度第一学期高二英语中期考试题 考试时间：120分钟 试卷总分：150分 一．阅读理解(每小题2分，20小题，共40分) （阅读短文，从每题所给的选项中，选出最佳选项。） A 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 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 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, you will dream from time to time. Scientists who study sleep point out that when you are dreaming, 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, som