Question

【題目】根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

Sleep is something we all do. But some people need to sleep more than others. Babies sleep most of the time. Children in school sleep about ten to twelve hours a night. Most adults sleep only seven or eight hours. ___【1】___

All parts of our bodies have to rest after they work.. Our arms need a rest after we lift heavy thing, When we run fast, our legs work hard. They get tired. We have to rest them. Our brains work hard, too. ___【2】__. We can sit quite still and rest our arms and legs. But our brains aren’t resting. They go right on thinking as long as we are awake.

Our brains slow down a bit when we sleep and dream. ___【3】__ Instead of thinking wide-awake thoughts, our brains make up dreams. Some dreams are very pleasing. Some are not. Most of the time we forget them when we wake up.

Scientists have tried to find out what would happen if people were not allowed to sleep. They asked some people not to go to bed. The people stayed up all night and all the next day. They stayed up the next night too, and the day after. They played games, but they made mistakes. They forgot things. ___【4】__

The people grew rude and mean. They became angry with their friends. Finally they were too tired to stand up. When they sat down, they fell asleep.

Scientists have found that if people are not allowed to sleep and to dream, they act in an unusual way. __【5】__ But we do know that we need it to stay well. So tonight have a good sleep. Lie down under the covers. Shut your eyes. Let your thoughts wander. Soon you’ll stop thinking. You’ll be asleep.

A. It was hard for their tired brains to work.

B. When we are awake, they help us pay attention to the world around us.

C. But babies, children, and adults ---- all of us need to have our sleep.

D. Good sleep helps to improve one’s memory.

E. No one knows why sleep is so good for us.

F. But even as we sleep our brains are doing some work.

G. Of course you will have a good sleep.

Answer 1

【答案】

【1】C

【2】B

【3】F

【4】A

【5】E

【解析】

試題分析：本文屬于說明文閱讀，介紹了為什么睡眠對(duì)人類如此重要的原因。

【1】C 根據(jù)橫線前三句Babies sleep most of the time. Children in school sleep about ten to twelve hours a night. Most adults sleep only seven or eight hours. 可知嬰兒、兒童和成年人睡眠的時(shí)間都不一樣。盡管他們的睡眠時(shí)間不同，但他們都需要睡眠。故C項(xiàng)正確。

【2】B 根據(jù)橫線前句Our brains work hard, too. 可知我們的大腦很努力。可知本句在介紹大腦的作用。故B項(xiàng)“When we are awake, they help us pay attention to the world around us.當(dāng)我們醒著的時(shí)候，他們幫助我們注意周圍的世界”與前面一句相一致。故B正確。

【3】F 根據(jù)橫線前句Our brains slow down a bit when we sleep and dream.當(dāng)我們睡覺做夢(mèng)的時(shí)候，我們的大腦減慢了一點(diǎn)速度，但是仍然在工作。也就是說當(dāng)我們睡覺的時(shí)候，我們的大腦也在做同樣的事情。橫線后一句Instead of thinking wide-awake thoughts, our brains make up dreams說明在睡覺的時(shí)候我們的大腦仍在工作。故F項(xiàng)正確。

【4】A 根據(jù)本段前半段內(nèi)容可知如果我們讓人連續(xù)工作不睡覺的時(shí)候，人們就會(huì)犯錯(cuò)。因?yàn)槠�憊的大腦很難一直在工作。橫線后句也說明疲憊的大腦對(duì)我們的生活會(huì)產(chǎn)生不好的影響。所以A項(xiàng)“It was hard for their tired brains to work.”與本段中心思想一致。

【5】E 根據(jù)橫線后句 But we do know that we need it to stay well.我們確實(shí)指代我們需要大腦保持良好狀態(tài)。句首的but說明前面一句表示與本句相反的意思，故E項(xiàng)“No one knows why sleep is so good for us沒有人知道為什么睡眠對(duì)我們有好處。”與上下文一致。