If we cannot reach an on the program, we will have to vote. A．agreement B．development C．treatment D．improvement 题目和参考答案——青夏教育精英家教网—

题目内容

If we cannot reach an ________ on the program, we will have to vote.

A．agreement B．development C．treatment D．improvement

练习册系列答案

Mom added ___ but the soup wasn’t _____

A. salty, salt enough. B. salty, enough salt.

C. salt, enough salt. D. salt, salty enough

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

— Why is Sandy absent from school today?

—He is in hospital．He hurt ______ when doing DIY at home yesterday．

A．his B．he C．himself D．him

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

词汇应用，用所给词的适当形式填空。

1. _______________ （相信）it or not, I did the work on my own.

2. We are getting ready for my little brother’s _________________ (九)birthday.

3.Taiwan is in the ________________________ (东南) of China.

4.The rabbit ran quickly ________________________ (穿过) the garden.

5. Weifang became___________________ （著名的）for making kites.

6.An old friend of _______________ (I) came to visit me last weekend.

7.When I passed by the river, I saw someone _________ (lie) on the floor.

8.We are looking forward to _______ (get) presents at Christmas.

9.He fell off the bike yesterday and _______________ (hurt) himself.

10. Stop ______________ (talk)! Listen to the teacher carefully!

11.The ____________ (child) are flying kites in the park.

12.This pen is Kate’s and that one is ___________. (my)

13.Look! Ann ____________ (clean) her room.

14.It’s ten o’clock. I must __________ (go) now.

15.Mr. Black ___________ (read) newspapers every day.

—I feel tired and sleepy. —Why not stop____ for a while?

A. rest B. to rest C. resting D. rested

4．-The traffic is very busy，isn't it？
-Yes．We _________ be careful when we cross the street．（　　）

试题分类