2019中考英语二轮复习 阅读、任务型阅读、完形填空精享新编(4).doc

2019中考英语阅读、任务型阅读、完形填空精享新编（4）一、阅读理解。

A

（2019中考选练）

How much sleep is enough?

To stay in good health, some experts in the US say, adults should get seven to eight hours of sleep. Teenagers need nine to ten hours. And

pre-school children need more than 10 hours of sleep a night.

Experts say the quality（质量）of our sleep becomes poor as we grow older. This happens because the brain unit that controls sleep begins to weaken slowly as we age.

Experts say the change starts in our 30s. By the time we reach our 50s, a person may have lost 50 percent of his or her ability to have a restful sleep.

These people have trouble falling and staying asleep through the night. From middle age on, these problems only get worse, and they can have a bad effect on their health.

Signs that show you may not be getting enough sleep:

You’re always hungry or you’ve got unwanted weight. If you are in short of sleep, certain chemicals（化学物质）in your body will not work well and tell your brain in time that you have eaten enough.

You have trouble making decisions. Not having enough sleep may make your brain work slower in problem solving.

You have trouble remembering things. Sleep helps prepare the brain for new memories.

Your feeling changes unreasonably. People who don’t sleep well may feel unable to control their feeling.

You are having trouble seeing. If there is a shortage of sleep, you may not be able to see things as clearly as usual.

How to improve your sleep? Here are a few things people can do to get

better sleep.

Health experts say that exercise and avoiding work on computers make people go to sleep more easily. A cool room is also a good choice for sleeping well.

1.What can we learn from the passage?

A.With the help of medicine, we can sleep better.

B.People begin to have sleep problems in their 40s.

C.Teenagers usually need more sleep than adults.

D.Few people have sleep problems in their late years.

2.The underlined word “effect” in the passage is close in meaning to .

A.knowledge

B.influence

C.excuse

D.activity

3.According to the passage, which of the following is NOT a sign that shows you are not sleeping well?

A.You often get hungry.

B.Your eyesight is failing.

C.You have poorer memory.

D.You always feel tired.

4.It is possible that the article is taken from .

A.a middle school textbook

B.a travel guide

C.a magazine on health

D.an ad in the newspaper

[主旨大意] 本文是一篇说明文,阐述了不同年龄段的人每晚需要多长时间的睡眠以及睡眠不足有哪些表现。文章最后提出要想睡眠好,多锻炼,少玩电脑。

1.C细节理解题。根据第二段中的“…adults should get seven to eight hours of sleep. Teenagers need nin e to ten hours.”可知,青少年需要的睡眠时间要比成人多些,故选C。

2.B词义猜测题。根据上文“These people have trouble falling and staying asleep through the night. From middle age on, these problems only get worse”