One of the best ways for people to keep fit is to______ healthy eating habits.

A. grow B. develop C. increase D. raise

練習冊系列答案
相關習題

科目：高中英語 來源：2016年北京市西城區(qū)高三上學期期末考試英語試卷（解析版） 題型：單項填空

The rainy weather lasted for a couple of days, completely _______ our plan for a picnic.

A． being ruined B． to ruin

C． ruined D． ruining

查看答案和解析>>

科目：高中英語 來源：2014-2015學年北京市高三上學期第一次質量檢測英語試卷（解析版） 題型：閱讀理解

Lights Out at Bedtime

There are plenty of good reasons to power up a personal desktop or laptop computer in the evening — writing e-mails， chatting on social networks or making purchases over the Internet， for instance． But various studies indicate that people who stare at a PC’s bright monitor shortly before going to bed probably sleep less soundly than they would otherwise because the light seriously affects their natural wake-sleep cycle．"They haven't proved it though，" says Dieter Kunz， the team's director at Charite's Psychiatric Clinic in St． Hedwig's Hospital in Berlin．

Similarly， exposure to just 10 minutes of normal bathroom lighting is enough to free the sleep hormone melatonin， which regulates people's natural wake-sleep cycle and makes them sleepy at nightfall．

Ten years ago， a team of British and American researchers detected a photo-pigment（光敏色素） in the human eye that signals to the body whether it is day or night， summer or winter． The photo-pigment is especially sensitive to blue light．

"The blue light more or less tells the body， It's daytime， be awake，'" Kunz says． Monitors have a mostly cold white light content and scientists suspect the photo-pigment may react similarly to it． So the longer people look into the bright light， the more awake they become - and then sleep poorly．

A lot of people have difficulty "switching off" in the evening． About half of the women in Germany and a quarter of the men sleep poorly．

Environmental factors are only one of the possible causes． Job stress as well as personal and health concerns are also the main reasons for their sleep problems．

In addition， electronic objects' standby lights and indicator lamps can be annoying in the dark and affect sleep．"Sound scientific evidence is still lacking on this matter，" Kunz notes．

According to Kunz， those who cannot go without their computer in the evening should turn down the blue content if possible and lower the brightness somewhat．"But nobody does that because， after all， you want to concentrate while working at the computer and the light helps the brain．"

1.The passage is mainly about ____________．

A． natural wake-up cycles

B． the effect of light on sleep

C． personal and health concerns

D． functions of computer monitors

2.The underlined word “which” in Paragraph 2 refers to_____．

A． normal bathroom lighting

B． 10-minute exposure to lighting

C． the release process of a chemical

D． a chemical affecting one’s sleep cycle

3.We can learn from the passage that ______．

A． the blue light has a calming effect．

B． the photo-pigment tells people day or night

C． women in Germany use computers more often than men

D． it has been proved that standby lights affect people’s sleep

查看答案和解析>>

科目：高中英語 來源：2016屆河北省保定市高三期末調研英語試卷（解析版） 題型：語法填空

閱讀下面材料，在空白處填入適當?shù)膬热荩?個單詞）或括號內單詞的正確形式。

Polar bears live in such environment that is too cold for most animals. For much of the year, they live and hunt on the 1. ________ (freeze) Arctic sea ice. Nature has prepared them for the cold conditions but nothing has prepared them for the danger 2. ________ threatens(威脅) their only home.

The polar bears’ world is melting. Polar bears3. ________ (suffer) in a warmer world are in danger. Studies show that the polar ice 4. ________ (reduce) by 9.8% every 10 years since 1978.At present , about 20,000 to 25,000 polar bears live in the Arctic. Polar bears depend on the sea ice for their 5. ________ (survive). “The sea ice is more than just the platform that the bears walk 6. ________ ,” says Andrew Derocher, who studies North American polar bear populations. “Without 7. ________ , they can’t exist.”

Some melting and refreezing of the polar ice is natural. But in a 8. ________ (warm) world, these cycles speed up, and bears have less time to hunt. 9. ________ (normal), they have three months in the spring when they gain more weight and the extra fat is used later, 10. ________ the bears are not actively hunting. Therefore, it is urgent to protect the environment and maintain the ecological balance.

查看答案和解析>>

科目：高中英語 來源：2014-2015學年陜西西安曲江第一中學高三上學期期中考試英語試卷（解析版） 題型：閱讀理解

On the coast of Brazil lies its most famous city Rio de Janeiro. Rio is a beautiful place to visit. It is full of exciting parades, historical architecture and natural beauty.

The most famous time of year in Rio is the spring when the samba schools organize a giant parade of dance, music and costumes. Samba is a type of fast Brazilian music, which is perfect for dancing. The carnival lasts two days and over 20 samba schools perform, a total of 70,000 people in brightly coloured costumes, all dancing and singing! It is a magnificent spectacle and millions of people watch the carnival on television around the world.

Rio de Janeiro is a religious city and it is full of churches. Some, like the former Imperial Church, were built over 400 years ago while others, like the Metropolitan Cathedral, are very modern. The Metropolitan Cathedral was built in 1976 and is so large that 20,000 people can stand inside at one time!

Another important religious site in Rio is the Corcovado hill. On the top of the hill, along with a small church, stands a 30-metre high statue of Jesus with his arms stretched out. From this point you can see every part of the city.

1. Brazilian carnival is_________.

A. a type of Brazilian music

B. a parade of 70,000 people dancing and singing

C. a parade of millions of people on television

D. the name of a samba school

2.The Metropolitan Cathedral___________.

A. was built 400 years ago B. is on Corcovado Hill

C. is a religious city D. was built in 1976

3.The Corcovado Hill is famous for__________.

A. the samba parade

B. the beautiful view of the city

C. the statue of Jesus

D. the small church

查看答案和解析>>

科目：高中英語 來源：2015-2016學年浙江瑞安龍翔高級中學高二上學期月考3英語試卷（解析版） 題型：閱讀理解

Ticket Prices for Shanghai Expo

Time

Types

Pre-sale（預售）Ⅰ

Mar. 27，2009

～Jun. 30，2009

Pre-sale Ⅱ

Jul. 1，2009

～Dec. 31，2009

Pre-sale Ⅲ

Jan. 1，2010

～Apr. 30，2010

Expo Session（期間）May. 1，2010

～Oct. 31，2010

Peak Day Ticket

（指定日門票）

￥170

￥180

￥190

￥200

Standard Day Ticket

（平日門票）

￥130

￥140

￥150

￥160

3-Day Ticket

N/A（無）

￥400

7-Day Ticket

￥900

Evening Ticket

N/A

￥90

41．1.If Joe wanted to buy the cheapest ticket for Peak Day，he could book（預定）one during ．

A．Pre - sale Ⅰ B．Pre – sale Ⅱ

C．Pre – sale Ⅲ D．Expo Session

2.On March 1，2010，Sue bought two Standard Day tickets for her parents.

She paid for them.

A．￥380 B．￥300 C．￥260 D．￥180

3.It cost Thomas ￥160 to get a ticket for Standard Day.He probably bought it on ．

A．April 23，2009 B．August l，2009

C．February 2，2010 D．May 20，2010

4.Kathy spent 900 yuan on a ticket for Shanghai Expo．Her visit can last days．

A．one B．three C．seven D．ten

5.Visitors to Shanghai Expo could buy tickets only after May 1，2010．

A. morning B．a(chǎn)fternoon

C．evening D．midnight

查看答案和解析>>

科目：高中英語 來源：2015-2016學年浙江杭州七校高一上學期期中英語試卷（解析版） 題型：閱讀理解

We offer five kinds of courses. Each course has been designed to help students according to their needs.

Course 1: General English

General English is designed to develop students’ basic communication skills in: Speaking and Pronunciation, Reading, Listening, Writing, Grammar and Vocabulary. Tuesday to Friday: 9:00 am to 11:00 am, $288 per week.

Course 2: Academic English

Academic English is for students who want to take the IELTS exam or for those who need to use English in a professional area. Monday to Friday: 4:00 pm to 5:00 pm, $ 320 per week.

Course 3: High School ESL

Why not make the most of your time studying in Australia with the help from TIES? We have High School ESL classes each week specifically designed for international students. Tuesday to Friday: 8:00 am to 11:00 am, $ 25 per hour.

Course 4: Night Classes

Do you want to improve your English and get the best possible results in your GRE test? We have two night classes each week designed to meet your needs. Tuesday and Thursday evenings: 8:30 pm to 10:30 pm, $ 60 per day.

Course 5: One on One

If you are interested in some One on One lessons with TIES teachers, we can design a course to meet your needs. One on One lessons can improve your English language skills more quickly and help students who want to take TOEFL. Tuesday to Friday: 2:00 pm to 5:00 pm, $ 80 per hour.

1. If you are an English beginner, you’d better choose________.

A. General English B. High School ESL

C. Night Classes D. Academic English

2.Which course would be helpful for students who want to take the IELTS exam?

A. Course 1. B. Course 2.

C. Course 3. D. Course 4.

3.How much will you pay if you spend two weeks taking the High School ESL course?

A.$ 200. B.$ 300. C.$ 500. D.$ 600.

4.What can we learn from One on One according to the passage?

A. Its lessons are given in the morning.

B. It’s especially designed for English beginners.

C. It’s more expensive than the other courses.

D. Its lessons are designed to only improve writing skills.

5.If you are only free in the morning, you may choose________.

A. Course 1 or Course 5 B. Course 3 or Course 4

C. Course 2 or Course 4 D. Course 1 or Course 3

查看答案和解析>>

科目：高中英語 來源：2016屆山東淄博淄川第一中學高三上學期期末英語試卷（解析版） 題型：短文改錯

短文改錯

假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯誤，每句中最多有兩處。每處錯誤僅涉及一個單詞的增加、刪除或修改。

增加：在缺詞處加一個漏字符號(∧)，并在其下面寫出該加的詞。

刪除：把多余的詞用斜線(＼)劃掉。

修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1．每處錯誤及其修改均僅限一詞；

2．只允許修改10處，多者(從第11處起)不計分。

Ladies and gentlemen，

It’s my honor to give a speech here．After-class activities play a important part in our school life．Proper activities help enrich our lives，broaden our horizons or develop our personalities.

Mine own experience can serve as a case in point. When I was in Senior one，I become a member of our drama club，that I used to visit on weekends．Since my participation in various activities organizing by the club，I achieved a lot．

These activities bring me a lot of funs，provide me with good opportunities to develop new friend-ships and open a window through which I have a brand-new outlook．With so much advantages shown above，why not to join us at once？

查看答案和解析>>

科目：高中英語 來源：2016屆浙江臨海臺州中學高三上學期第三次統(tǒng)練英語試卷（解析版） 題型：完形填空

完形填空

閱讀下面短文，從短文后所給各題的四個選項（A、B、C和D）中，選出可以填入空白處的最佳選項，并在答題卡上將該項涂黑。

I am anything but adventurous. So, when I actually ____ the courage to learn driving and, even more ____, passed the test, I fancied being a free spirit at last.

I mistakenly thought I would ____new roads and drive to the farthest horizons. But, trying new highways was next to ____ for me. The time I tried, I got hopelessly ____ and found myself going around in circles. When I eventually found the way home, I ____ this was the end of the adventurous life. I _____ the known routes. When a friend ____ me to make the most of weekend when the traffic was ____ to make new discoveries, I ___ at her with horror. Was I going to ____ a perfectly good weekend raising my blood pressure or was I going to spend it doing as little as possible? _____, I chose the latter option.

After some years of battling the Sharjah-Dubai ___ , I told myself it wasn’t worth ____ my peace of mind. Now I had the Metro, buses and ____ to choose from. Taking taxi was one of the best ____ I have made from a traffic point of view. There was an unbelievable sense of lightness _____ I jumped into a taxi, taken to my destination without being worried.

All one has to do is give directions. I am good at that. Giving directions, I mean. And I am very __ ___ when I issue these, with no effect on the part of the person driving. As soon as I sit inside, I start the description of the _____ to be taken in great detail so as to _____ the possibility of being taken for a ride.

1.A．covered B．delivered C．gathering D．removing

2.A．enthusiastically B．surprisingly C．importantly D．typically

3.A．discover B．get C．invent D．purchase

4.A．invisible B．useful C．practical D．impossible

5.A．lost B．a(chǎn)mazed C．puzzled D．moved

6.A．refused B．hoped C．replied D. swore

7.A．a(chǎn)dded to B．stuck to C．got to D．referred to

8.A．suggested B．ordered C．a(chǎn)dvised D．persuaded

9.A．light B．heavy C．slow D．safe

10.A．glared B．stared C．glanced D．viewed

11.A．use B．spare C．waste D．devote

12.A．Of course B．In short C．In case D．Of all

13.A．system B．a(chǎn)tmosphere C．society D．traffic

14.A．weighing B．disturbing C．conducting D. carrying

15.A．cars B．trains C．trucks D．cabs

16.A．dreams B．discoveries C．choices D．challenges

17.A．while B．when C．until D．before

18.A．considerate B．ignorant C．stubborn D．a(chǎn)ccurate

19.A．route B．map C．design D. course

20.A．increase B．extend C．reduce D．Expand

查看答案和解析>>

同步練習冊答案