精英家教網 > 高中英語 > 題目詳情

Here’s a new warning from health experts: sitting is deadly. Scientists are increasingly warning that sitting for long periods, even if you exercise regularly, could be bad for your health. And it doesn't matter where the sitting takes place--in the office, at school, in the car or before a computer or TV. Just the overall number of hours it takes matters. Several studies suggest people who spend most of their days sitting are more likely to be fat, have a heart attack or even die. While health officials have issued(發(fā)布) guidelines advising on the least amounts of physical activities, they haven’t suggested people try to limit how much time they spend in a seated position.

“After four hours of sitting, the body starts to send harmful signals,” said Ekblom-Bak of the Swedish School of Sport and Health Sciences. She explained that genes controlling the amount of glucose(葡萄糖) and fat in the body start to shut down.

Even for people who exercise, spending long periods of time sitting at a desk is still harmful. Tim Armstrong, a physical activity expert at the World Health Organization, said people who exercise every day but still spend a lot of time sitting might get more benefits if that exercise were spread across the day, rather than in a single hour.

Still in a study that tracked more than 17,000 Canadians for about a dozen years, researchers found people who sat more had a higher death risk, whether they exercised or not. Experts said more research is needed to figure out just how much sitting is dangerous, and what might be possible to offset those effects.

People should keep exercising because that has a lot of benefits,” Ekblom-Bak said. “And when they’re in the office, they should try to interrupt sitting as often as possible.”

1.The underlined word “offset" in Paragraph 6 most probably means_______.

A. get rid of B. make use of

C. work out D. turn to

2.Sitting too much is dangerous because it can________ .

A. increase glucose and fat in the body

B. make a person become lazy

C. destroy the balance of glucose and fat in the body

D. make a person unable to exercise enough in a day

3.In the opinion of Ekblom-Bak, when at work, you’d better have a rest by_______ .

A. taking a walk around your office

B. chatting online or playing computer games

C. sending your friends emails

D. listening to music while sitting

4.Which of the following might be the best title for the passage?

A. More and More People Sit Too Much

B. Side Effects of Sitting Too Much

C. Don’t Sit Too Much While Working

D. Sitting Too Much Could Be Dangerous

練習冊系列答案
相關習題

科目：高中英語 來源：2015-2016學年安徽淮南市高二下期第一次教學檢測英語試卷（解析版） 題型：語法填空

根據短文內容，從短文后的選項中選出能填入空白處的最佳選項。選項中有兩項為多余選項。

Getting your children to study can be a little like getting them to eat their vegetables.

____1.___ Make a study time and have it at the same time every day. This will help your kid to learn to schedule their day and will give them a sense of control over how they spend their time.

Allow them to study in block of time, such as for half an hour with a five-minute break in the middle. ___2.___ Ideal (理想的) study times are after dinner or right after school before dinner .

Never allow your children to study in front of the television, as that will encourage passive activity. __3.__

You’ll also need to help your kids find the right place to study. After you’ve set up a good study time for little learners, set up a good place where they can get those creative juices flowing. ___4.___ Make sure there is a table or a desk and a comfortable chair.

___5.___ This includes helping them out with their homework sometimes and being there for them with the answers to any questions. The input you give your children during study periods will help form a bond and help make studying enjoyable.

A. Pick a place where your children can study properly

B. Hold them to the schedule they create for themselves.

C. Finally, spend time with your kids when they’re studying.

D. Keep the atmosphere light and offer lots of encouragement, too.

E. Instead, use TV as a treat or a reward when the homework is completed.

F. Try to stop this bad habit by offering some sort of reward.

G. One of the best ways to from good study habits for your kids id to design a schedule that they keep to.

查看答案和解析>>

科目：高中英語 來源：2015-2016學年山西太原市高二4月考英語試卷（解析版） 題型：閱讀理解

Together the two boys, who go to Escondido High School in California, have had the difficult job of learning in schools where the majority of the students can speak and hear. Orlando lost his hearing at the age of one. German was born deaf, and his parents moved from Mexico to find a school where he could learn sign language. He met Orlando on their first day of kindergarten.

“We were in a special class with about 25 other deaf kids,” German remembers. “Before then, I didn’t know I was deaf and that I was different.”“Being young and deaf in regular classes was very hard,” signs Orlando. “The other kids didn’t understand us and we didn’t understand them. But we’ve all grown up together, and today, I’m popular because I’m deaf. Kids try hard to communicate with me.”

Some things are very difficult for the two boys.“We can’t talk on the phone, so if we need help, we can’t call an emergency service,” German signs. “And we can’t order food in a drive-thru.”

Despite their difficulties, the two boys have found work putting food in bags at a local supermarket. They got their jobs through a “work ability” program, designed for teenagers from local schools with different types of learning disabilities. German has worked in the supermarket since August, and Orlando started in November.“The other people who work here have been very nice to us,” Orlando signs.“They even sign sometimes. At first, we were nervous, but we’ve learned a lot and we’re getting better.”The opportunity to earn money has been exciting, both boys said. After high school, they hope to attend the National Technical Institute for the Deaf in New York.

1.Orlando and German have been_____________.

A．to Mexico together.

B．deaf since they were born.

C．friends since they were very young.

D．to different high schools.

2.The word “emergency” in paragraph 3 is closest in meaning to________.

A．food. B．crisis. C．alarm. D．quick.

3.Both boys are happy to__________________.

A．have the opportunity to earn money.

B．work at the National Technical Institute for the Deaf.

C．help students with learning disabilities.

D．design programs for the deaf

查看答案和解析>>

科目：高中英語 來源：2015-2016學年江西上高縣二中高二4月考英語卷（解析版） 題型：完形填空

完形填空

At the airport, I looked closely at the face of my son, Daniel, his backpack by his side. We were saying good-bye. In a few hours he would be flying to France to ________ a different life . It was a transitional（過渡期的）time in Daniel’s life. I wanted to leave him some words of ________. But nothing came from my ________ and this was not the first time I had let such a moment ________.

When Daniel was five, I took him to the school-bus stop on his first day of kindergarten. He looked at me -- as he did now. “What is it going to be like, Dad? Will I be okay? ” And then he walked up the ________ of the bus and disappeared inside. And the bus ________. And I had said nothing.

A decade or so later, a similar ________ appeared. I drove him to college. I tried to think of something to say to give him________ and confidence as he started this new life. Again, words ________ me.

Now, as I stood before him, I thought of those________ opportunities. How many times have we all let such moments pass?

My father and I loved each other. Yet, I always ________ never hearing him put his________ into words and never having the memory of that moment. Now, I could feel my hands sweat and my throat ________. Why is it so ________to tell a son something from the heart?

My mouth turned dry, and I knew I would be able to speak out only a few words ________ . “Daniel," I said, "if I could have picked, I would have picked you." That’s all I could say. I wasn’t sure he understood what I ________ . Then he came toward me and threw his arms around me. For a moment, the world and all its people faded away, and there was just Daniel and me. He was saying something, ________ my tears rolled down, and I couldn’t understand what he was saying. All I was ________ of was the stubble（胡茬）on his chin as his face pressed ________ mine. And then, the moment ended. What I had said to Daniel was clumsy. It was nothing. And yet, it was ________ .

1.A. spendB. startC. enjoyD. shape

2.A. sorrowB. stressC. significanceD. resolve

3.A. headB. lipsC. thoughtsD. mind

4.A. flyB. remainC. passD. refresh

5.A. stepsB. chairsC. handlesD. windows

6.A. pulled upB. pulled downC. drove awayD. drove up

7.A. signB. sceneC. sceneryD. sight

8.A. interestB. opinionC. courageD. influence

9.A. failedB. discouragedC. struckD. troubled

10.A. valuableB. embarrassingC. obviousD. lost

11.A. wonderedB. regrettedC. triedD. minded

12.A. judgementsB. feelingsC. actionsD. effects

13.A. tightenB. hurtC. freezeD. enlarge

14.A. specificB. casualC. ridiculousD. hard

15.A. evidentlyB. obviouslyC. clearlyD. carefully

16.A. countedB. meantC. valuedD. care

17.A. butB. andC. insteadD. so

18.A. sensitiveB. convincedC. awareD. tired

19.A. byB. againstC. onD. with

20.A. noneB. allC. everythingD. anything

查看答案和解析>>

科目：高中英語 來源：2015-2016學年吉林松原油田高中高一下4月考試英語試卷（解析版） 題型：短文改錯

短文改錯

文中共有10處語言錯誤，每處錯誤共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（∧）， 并在其下面寫出增加的詞。

刪除：把多余的詞用斜線（＼）劃掉。

修改：在錯的詞下畫一橫線，并在該詞下面寫出修改后的詞。

Last summer I had a chance to visit Paris. That attracted me most was the Eiffel Tower, which is symbol of France. I was deep impressed by its height. I had never seen such a tall building ago! It is made up of iron, and it is about 11,500 tons heavy.

There are 1,711 steps from the bottom to the top. Climb the tower made me very tired, but I was very exciting. I take a lot of photos in Paris.

I have much memories and experiences to share. I am so lucky to have seen such a culture so different from my own. I will remember my trips to France forever!

查看答案和解析>>

科目：高中英語 來源：2015-2016學年吉林吉林大學附中高二4月考英語試卷（解析版） 題型：單詞拼寫

閱讀下面句子并根據句意或結構完成每個句子，并將答案寫在答題紙上。

1.He r____________ from the government and became a businessman.

2.He a____________ his car on the roadside when it broke down and called a taxi.

3.My little sister is 4 years my j____________.

4.He raised the fire a____________ when he saw the building across the street was on fire.

5.You should be fully a____________ of the risks involved.

6.I feel no ____________ (同情心) for him, for it is all his fault.

7.He is the only ____________ (目擊者) to this accident.

8.John was planning on how to spend their wedding ____________ (周年紀念日).

9.Making ____________ (利潤) is not the only aim of running a business.

10.He was given two days to r____________(反思) on what the boss had said.

查看答案和解析>>

科目：高中英語 來源：2015-2016學年吉林吉林大學附中高二4月考英語試卷（解析版） 題型：閱讀理解

On a hot summer’s day Jonathan and his classmates were anxiously sitting in their classroom, waiting for the final bell of the day to sound. Jonathan prayed that the bell would ring soon, because he wanted to quickly run home before the three huge, fat, smelly bullies (地痞) could see him. Every day the three bullies would wait there for an innocent school kid to tease and bully.

The moment the bell sounded, Jonathan rushed out with his bag. He sped off across the school field and out onto the walkway. However, all of his effort was useless because leaning on a fence were the three bullies.

Jonathan thought about crossing the street next to him, but it would be too risky. So he hid behind a small bush in hope that the three would leave. But he moved too quickly and was seen by one of the bullies. They approached him then.

One bully grabbed Jonathan by the collar of his shirt and grabbed the money out of Jonathan’s pocket and put it into his own.

“G-Give it back”, Jonathan weakly said.

“G-G-Give it b-back”, mocked (為了取笑而模仿) the bully. The other two bullies laughed.

Beside them was a small dirty stream.

“Let’s throw him in there”, said one of the bullies.

Then they threw Jonathan into the stream and walked off down the walkway. Jonathan shakily picked himself up out of the creek and continued his walk home with his head down and tears in his eyes. He dared not cry because he knew boys didn’t cry.

Jonathan arrived at his house where his mother was waiting outside the front door with an angry look on her face.

“Why are you so late and dirty?” she asked curiously.

“I slipped”, he quietly replied.

1.Why did Jonathan run home immediately after school?

A. Because his mother was strict with him.

B. Because he was afraid of his mother.

C. Because he had to escape being bullied

D. Because he didn’t like to go to school.

2.How did the bullies find Jonathan?

A. They ran after him till they caught up with him.

B. They waited on Jonathan’s way home by chance.

C. One of the bullies noticed Jonathan hiding himself.

D. Jonathan was given away by one of his classmates.

3.Jonathan didn’t tell the truth to his mother because ______.

A. he felt ashamed after being bullied

B. he wanted to be considered a boy

C. he didn’t dare to tell it to his mother

D. he was not allowed to play in the creek

4.The story is about ______.

A. trouble during a boy’s growing up

B. development of a boy’s heart

C. the way of a boy’s going home

D. a boy’s learning from life

查看答案和解析>>

科目：高中英語 來源：2016屆寧夏石嘴山市高三下第二次模擬考試英語試卷（解析版） 題型：閱讀理解

According to EMTP and Stat Gear CEO Avi Goldstein, every driver should be taught how to get out of a car when it becomes submerged in water.

“Accidents and natural disasters often occur so quickly that it’s essential for drivers to be prepared,” says Goldstein. “In this case, preparation is simply knowing what should be done before it happens.”

Goldstein offers the following lifesaving tips:

1.Try to stay calm. The worst thing you can do is become overly agitated and panicked.

2. Don’t try to open the door. This will cause the car fill with water very quickly.

3. Unfasten your seat belt or cut it if it’s jammed.

4. Help free anyone else in the car.

5. Use a window punch — preferably spring-loaded. It’s nearly impossible to break a car window with your hands or feet.

6. Exit through the broken window and swim up to safety.

“Every car should be equipped with a window punch and seat belt cutter, but they are usually completely forgotten by car owners,” says Goldstein. For example, the T3 Tactical Auto Rescue Tool from Stat Gear features a 440c stainless steel serrated knife, seat belt cutter, spring-loaded window punch and LED light.

Goldstein asserts that the T3 or another similar tool should always be within arms length of a driver. “If for any reason a driver becomes pinned into his or her seat, emergency tools need to be within reach--otherwise they are useless. They will do you no good in your trunk or backseat.” The following is a quick demonstration on how to escape a sinking car with a baby on board.

1.What is the meaning of the underlined word in paragraph 1?

A. washed B. cleaned C. stuck D. discovered

2.According to the passage, where should you put a window punch and a seat belt cutter in your car?

A. Near the driver’s seat. B. In the trunk.

C. In the back seat. D. Under the engine.

【小題What will be following the passage?

A. How to save a baby in a car.

B. How to help a baby escape from a car.

C. How to escape from a sinking car with a baby.

D. How to avoid sinking a car with a baby.

查看答案和解析>>

科目：高中英語 來源：2016屆北京市東城區(qū)高三下期綜合練習（一）英語試卷（解析版） 題型：閱讀理解

The U. S. Postal Service (USPS) is losing billions of dollars a year. The government company that delivers "small mail" is losing out to email and other types of electronic communication. First-class mail amount fell from a high point of 104 million pieces in 2000 to just 64 million pieces by 2014.

Congress permits the 600.000-empIoyee USPS to hold a monopoly (壟斷) over first-class and standard mail. The company pays no federal, state or local taxes; pays no vehicle fees; and is free from many regulations on other businesses. Despite these advantages, the USPS has lost $52 billion since 2007, and will continue losing money without major reforms.

The problem is that Congress is preventing the USPS from reducing costs as its sales decline, and is blocking efforts to end Saturday service and close unneeded post office locations. USPS also has a costly union-dominated workforce that slows the introduction of new ideas or methods down. USPS workers earn significantly higher payment than comparable private-sector workers. The answer is to privatize the USPS and open postal markets to competition. With the rise of the Internet, the argument that mail is a natural monopoly that needs government protection is weaker than ever.

Other countries facing declining letter amounts have made reforms Germany and the Netherlands privatized their national postal companies over a decade ago, and other European countries have followed suit. Britain floated shares of the Royal Mail on its stock exchange in 2013. Some countries, such us Sweden and New Zealand, have not privatized their national postal companies, but they have opened them up to competition.

These reforms have driven efficiency improvements in all of these countries. Additional number of workers have been reduced, productivity has risen and consumers have benefited. Also, note that cost-cutting measures—such as closing tone post offices—are good for both the economy and the environment.

Privatization and competition also encourage new changes. When the USPS monopoly over "extremely urgent" mail was stopped in 1979, we saw an explosion in efficient overnight private delivery by firms such as FedEx.

The government needs to wake up to changing technology, study postal reforms abroad and let businessmen reinvent our out-of-date postal system.

1.What do we know about the USPS?

A. Its great competitor is the delivery firm FedEx.

B. It is an old public service open to competitions.

C. Its employees don't pay federal, state or local taxes.

D. It has complete control of first-class and standard mail.

2.The author mentions some other countries in Paragraph 4 to __________.

A. explain the procedures of reform to the USPS

B. show the advantages of private postal services

C. set some examples for the government to learn from

D. prove the situation is very common around the world

3.The author probably that the USPS __________.

A. needs government’s protection as ever

B. can work together with other businesses

C. must be replaced by international companies

D. should be sold out and become a private service

4.Which of the following shows the development of ideas in this passage?

A. B.

C. D.

I: Introduction CP: Central point P: Point

Sp: Sub-point (次要點) C: Conclusion

查看答案和解析>>

同步練習冊答案