- It’s dangerous to swim in this lake.- Yes. you are right. The government has people not to swim in it.A. trained B. warned C. led D. encouraged 题目和参考答案——青夏教育精英家教网—

题目内容

— It’s dangerous to swim in this lake.

— Yes， you are right. The government has people not to swim in it.

A. trained B. warned

C. led D. encouraged

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相关题目

There is an old bridge _______ the river. Be careful (小心) when you _______ it.

A. over; across B. over; cross

C. on; cross D. on; across

As a result, during his first year he often _______ ill and his grades ________.

A. fell, fell B. dropped, fell

C. fell, dropped D. dropped, dropped

阅读下列材料，从每小题所给的A、B、C、D四个选项中选出一个最佳选项。

Billy Dengler， a 14-year-old boy， is in the eighth grade. A month after he was born， Billy’s mother，Terri， noticed that his eyes weren’t quite as big as a normal baby’s. She took Billy to the hospital and the doctor said Billy would never be able to see.

Although Billy can’t see， he has never let that hold him back or make him different. Billy began teaching himself computer programming by using a screen reader when he was just seven years old. He is a certified Google developer (谷歌认证开发者) now.

Google even tried to offer him a job last year when he discovered a problem in one of its systems， but Billy wasn’t old enough. Billy’s dream school would be Stanford University or MIT， where he could get a very good education in computer science. After he leaves school， whether he will go to work at a company like Google or design a software company of his own is still to be decided. However， he says he will definitely (绝对地) do something great.

“It’s a sighted world，” Billy said. “You can’t let anything get in the way of your dreams， and if you do that， you can’t move forward and make your dreams come true.”

1.Billy’s mother found there was something wrong with Billy’s eyes when .

A. he was 14 years old

B. he left school

C. he was in the eighth grade

D. he was a month old

2. Billy started to learn computer programming by himself with the help of .

A. a screen reader B. his mother

C. a computer D. his teacher

3.The underlined word “systems” means “ ” in Chinese.

A. 电脑 B. 系统

C. 机器 D. 计划

4.What will Billy do after school?

A. He will work for Google.

B. He will open a company.

C. He has not decided on that.

D. He will do nothing.

5.We can learn that from the passage.

A. blindness is not a big problem

B. it’s easy to be a certified Google developer

C. nothing should get in the way of our dreams

D. Billy is a student of Stanford University

— The Dragon Boat races are so exciting， but our boat is still behind.

— Don’t worry. I am sure our team will win!

A. if B. that

C. whether D. why

— Linda， do Chinese people celebrate Easter Day?

— No. This is the first time I’ve celebrated festival.

A. the； the B. the； a

C. /； the D. /； a

阅读理解。

Do you sometimes find you want to eat chocolate or ice cream very much? Do you then make it but feel guilty about it later?

The next time this happens to you， think back if you have had enough sleep over the last 3-5 days. Many adults and even teens have noticed that they crave "midnight snacks" when working or watching TV late.

New research shows that lack of sleep could lead us to have an increased appetite (食欲)- especially for the unhealthy kind.

Recently， researchers at the University of Chicago carried out a study that clearly shows that a lack of sleep actually changes our brain chemistry! Studies were done on two control groups over four days. Both groups had their food and sleep strictly controlled. All of them received three meals. The only difference was that one group was allowed to sleep for 7.5 hours while the other group slept for a little more than four hours.

During the following visit， their sleep patterns were exchanged. After the last night of the session， the volunteers were offered as much food as they wanted to eat. Researchers noticed that in both sessions， people who sleep less ate on an average 300 calories more than those who had slept more. This was much more calories than what their bodies would need to make up for the three fewer hours of sleep.

What Is Going On?

The researchers then analyzed the chemicals (化学成分) in the blood of the people in the study. What they noticed was surprising. High levels of ghrelin (a chemical that makes us hungry) and lower levels of leptin (the chemical that tells the brain that it is satisfied) were found in the people with less sleep.

Even more surprising was that this group had higher levels of endocannabinoids - the same chemical that is caused by drugs such as cannabis (大麻). The endocannabinoid system causes a craving for sugar and fatty foods and leads to overeating even when the body is not hungry. This study suggests that sleep changes help produce chemicals in the body that are similar to taking drugs!

Furthermore， researchers noticed that food cravings continued for a long period of time， well after the lack of sleep. This increases the risk of over-eating for longer periods， leading to obesity (肥胖).

Your body needs 7-8 hours of sleep each night. So， the next time you reach for a bag of chips or a slice of decadent cake， think of the amount of sleep you have had recently!

1.According to the passage， people want to eat more when they ________.

A．work B．watch TV

C．sleep less D．sleep more

2.The word ‘crave’ in paragraph 2 most probably means ________.

A．hope B．want

C．hate D．dislike

3.From the passage， we can learn that ________.

A．people feel guilty about eating chocolate

B．unhealthy food makes people sleep less and less

C．a person’s sleep has nothing to do with his/her appetite

D．a study about sleep and obesity was carried out at the University of Chicago

4.The chemical that makes us feel hungry is called ________.

A．ghrelin B．leptim

C．cannabis D．endocannabinoids

5.This article is mainly about ________.

A．researchers working on people’s sleep

B．how people’s sleep influences their appetite

C．how much people need to eat after sleeping less

D．A research about chemicals in the blood of people

Seasons in Australia are different from those in the USA. When it is fall in New York， it is _______ in Sydney.

A．summer B．spring

C．autumn D．winter

When Robinson got to the island，the first thing _________he did was to look for some food．

A．who B．which C．that D．What

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