【題目】The human body is designed to move. But modern lifestyles and office jobs rarely give us the chance to move around. As we know. we're while we're eating; we sit in the car and we sit while we watch TV. And many of us sit for many hours at work.

New research shows that sitting less than three hours a day might extend your life by two years. Peter Katzmarzyk，a scientist at the University of Louisiana in the southern United States，says that sitting is ubiquitous in our lives，meaning it is something we do all the time，everywhere.

However，Mr. Katzmarzyk says that does not mean you can sit for the rest of your waking hours. He also says you may exercise often，“We can't throw away physical activity. It's extremely important. We have 60 years of research showing us that. ”

Mr. Katzmarzyk and his coi leagues are part of a new generation of researchers studying how sitting all day affects length of life. “Studies that have assessed the relationship between sitting and mortality(死亡率)or television viewing and mortality are very rare. There's only been a few of them，actually five or six now，in the last four or five years. ”They found that cutting television time to less than two hours a day could add one-point four years to life.

Luckily，change is already coming to some offices，especially in the design of desks. A “standing desk”lets people stand while they work. Another new design is called the “treadmill desk. ” A treadmill is an exercise machine that lets you walk in one place Even some U. S. schools are beginning to experiment with desks that are part bicycle to keep children moving. That's one of the strategies that many companies are using now.

Mr. Katzmarzyk also says studying this problem has inspired his team to make a few changes in their own lives.

【1】Which view agrees with the opinion of Mr. Katzmarzyk?

A． Sitting too long may help increase one's life.

B． Exercise is important and don't sit too long.

C． Watching TV is bad，but can broaden one's horizons.

D． Stopping watching TV is a necessary but hard task.

【2】What does Mr. Katzmarzyk think of his study in Paragraph 4?

A． It's a ly new area of study.

B． It's a hot subject studied by experts.

C． It's a study that begins too late.

D． It's not ignored by many experts.

【3】Why are the desks of all kinds designed for those who sit more?

A． To give them more comfort.

B． To improve their work efficiency.

C． To offer them the chance to exercise.

D． To seek pleasure while working.

【答案】

【1】B

【2】A

【3】C

【解析】

【1】根據(jù)文章第三段中的He also says you may exercise often，"We can't throw away physical activity. It's extremely important，可知B選項(xiàng)的意思與之相符。

【2】根據(jù)第四段中的There's only been a few of them，actually five or six now，in the last four or five years，可知關(guān)于這一方面的研究還不多，只是金四五年來才開始研究的，故選A。

【3】根據(jù)第五段的第一句A "standing desk" lets people stand while they work. Another new design is called the "treadmill desk. "，可知是專門為了那些一天到晚都坐著工作的人而設(shè)計(jì)這種桌，從而讓他們得到運(yùn)動(dòng)的，故選C。

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來源： 題型：

【題目】The Pacific island nation of Nauru used to be a beautiful place. Now it is an ecological disaster area. Nauru's heartbreaking story could have one good consequence-other countries might learn from its mistakes.

For thousands of years, Polynesian people lived in the remote island of Nauru, far from western civilization. The first European to arrive was John Fearn in 1798. He was the British captain of the Hunter, a whaling ship. He called the island Pleasant Island.

However, because it was very remote, Nauru had little communication with Europeans at first. The whaling ships and other traders began to visit, bringing guns and alcohol. These elements destroyed the social balance of the twelve family groups on the island. A ten-year civil war started, which reduced the population from 1,400 to 900.

Nauru's real troubles began in 1899 when a British mining company discovered phosphate(磷酸鹽)on the island. In fact, it found that the island of Nauru was nearly all phosphate, which was a very important fertilizer for farming. The company began mining the phosphate.

A phosphate mine is not a hole in the ground; it is a strip mine. When a company strip-mines, it removes the top player of soil. Then it takes away the material it wants. Strip mining totally destroys the land. Gradually, the lovely island or Nauru started to look like the moon.

In 1968, Nauru became one of the richest countries in the world. Every year the government received millions and millions of dollars for its phosphate.

Unfortunately, the leaders invested the money unwisely and lost millions of dollars. In addition, they used millions more dollars for personal expenses. Soon people realized that they had a terrible problem—their phosphate was running out. Ninety percent of their island was destroyed and they had nothing. By 2000, Nauru was financially ruined. Experts say that it would take approximately$433, 600, 000 and more than 20 years to repair the island. This will probably never happen.

【1】What was Nauru like before the Europeans came?

A. Rich and powerful]

B. Modern and open

C. Peaceful and attractive

D. Greedy and aggressive

【2】The ecological disaster in Nauru resulted from .

A. soil pollution

B. phosphate overmining

C. farming activity

D. whale hunting

【3】Which of the following was a cause of Nauru's financial problem?

A. Its leaders misused the money

B. It spent too much repairing the island

C. Its phosphate mining cost much money

D. It lost millions of dollars in the civil war.

【4】What can we learn about Nauru from the last paragraph?

A. The leaders will take the experts' words seriously

B. The phosphate mines were destroyed

C. The island was abandoned by the Nauruans

D. The ecological damage is difficult to repair.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容（1個(gè)單詞）或括號(hào)內(nèi)單詞的正確形式。

Once upon a time in an old forest, there was a poor woodcutter 【1】 (cut) wood by the lake. One day, his axe斧子）fell into the lake 【2】 accident. The poor woodcutter didn’t know how to swim, 【3】 he could do nothing but pray to the lake goddess.

The lake goddess heard his prayer and appeared before him.

“Help me!” said the woodcutter, “I’m very poor，and I lost my only axe. If I don't get my axe back，my family will starve to 【4】 (dead)，please help me!” He cried. After a while, the goddess brought out an axe 【5】 (make) of gold from the lake.

“Is this your axe，my good man? ” asked the goddess.

"No." Then the goddess brought out a silver axe, but the woodcutter said that wasn’t his axe again.

The 【6】 (three) time, she brought out the woodcutter’s axe. The woodcutter jumped up

【7】 (happy) and said，“This is my axe. Thank you very much!”

At the end of the story, the goddess was very pleased with the woodcutter’s honesty. He just wanted 【8】 he deserved So she decided 【9】 (give) both the gold and silver axe to him. The woodcutter sold the axes, and 【10】 (become) a rich man.

The moral of this story is that honesty is the best policy.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】Along the river banks of the Amazon and the Orinoco, there lives a bird that swims before it can fly, flies like a fat chicken, eats green leaves, has the stomach of a cow and has claws (爪) on its wings when young. They build their homes about 4.6m above the river, an important feature (特征) for the safety of the young. It is called the hoatzin.

In appearance, the birds of both sexes look very much alike with brown on the back and cream and red on the underside. The head is small, with a large set of feathers on the top, bright red eyes, and blue skin. Its nearest relatives are the common birds, cuckoos. Its most striking feature, though, is only found in the young.

Baby hoatzins have a claw on the leading edge of each wing and another at the end of each wing tip. Using these four claws, together with the beak (喙), they can climb about in the bushes, looking very much like primitive birds must have done. When the young hoatzins have learned to fly, they lose their claws.

During the drier months between December and March hoatzins fly about the forest in groups of 20 to 30 birds, but in April, when the rainy season begins, they collect together in smaller living units of two to seven birds for producing purposes.

【1】What is the text mainly about?

A. Hoatzins in dry and rainy seasons.

B. The relatives and enemies of hoatzins.

C. Primitive birds and hoatzins of the Amazon.

D. The appearance and living habits of hoatzins.

【2】Young hoatzins are different from their parents in that_________ ．

A. they look like young cuckoos

B. they have claws on the wings

C. they eat a lot like a cow

D. they live on river banks

【3】What can we infer(推斷) about primitive birds from the text?

A. They had claws to help them climb.

B. They could fly long distances.

C. They had four wings like hoatzins.

D. They had a head with long feathers on the top.

【4】Why do hoatzins collect together in smaller groups when the rainy season comes?

A. To find more food.

B. To protect themselves better.

C. To keep themselves warm.

D. To produce their young.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】假定英語(yǔ)課上老師要求同桌之間交換修改作文， 請(qǐng)你修改你同桌寫的以下作文。文中共有10處語(yǔ)言錯(cuò)誤，每句中最多有兩處。每處錯(cuò)誤僅涉及一個(gè)單詞的增加、刪除或修改。

增加: 在缺詞處加一個(gè)漏字符號(hào)(∧)，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(cuò)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(cuò)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(jì)分。

Yesterday I showed to my friend Peter around Beijing city．We started off at 8:00 a.m．First we went to the Forbidden City, which was one of the most popular tourist spot in Beijing．Then we visited the History Museum．We observed a lot of valuable things in them and we learned a lot about Chinese history．After a quick meal, we wentto Beihai Park．Upon arrival, we were all struck by its beautiful scenes．We spent a whole afternoon appreciated the wonder．It was until 18:00 p．m．that we went back.

We did have a wonderful time．Peter was very pleased with my arrangement that he

invited me to a new-built western restaurant to have a big meal.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

When you live in America, it is not uncommon to see many children coming home from school to an empty house.【1】. Some may hide. But all of them have something in common. They spend part of each day alone. They are called latchkey children. They’re children who look after themselves while their parents work. 【2】

Kate Green was one of the headmasters of an elementary school. She said, “We had a school rule against wearing jewelry. A lot of kids had chains around their necks with keys attached. I was constantly telling them to put them inside skirts. There were so many keys. It never came to my mind what they meant.” 【3】

She and her husband began talking to the children. They offered the suggestion:

【4】. One in every three latchkey children the Greens talked to once reported being scared. Many had nightmares (噩夢(mèng)) and were worried about their own safety.

The most common way latchkey children deal with their fears is by hiding. 【5】The second is TV. They’ll often play it at high volume. It’s hard to get statistics (統(tǒng)計(jì)) on latchkey children, the Longs learned. Most parents are slow to admit they leave their children alone.

A. Slowly, she learned they were house keys.

B. But they don’t mind.

C. Some deal with the situation by watching TV.

D. Fear is the biggest problem faced by children at home alone.

E. Some should go to their friends for safety.

F. And their bad condition has become a subject of concern.

G. It might be in a shower stall, under a bed or in a closet.

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】Life gets noisier every day and very few people can be free from noise of some sort or another. It doesn’t matter where you live ---- in the middle of a modern city, or a faraway village --- the chances are that you’ll be disturbed by jet planes, transistor radios, oil-powered engines, etc. we seem to be getting used to noise, too. Some people feel quite lonely without background music while they’re working.

Scientific tests have shown that total silence can be a very frightening experience for a human being. However, some people enjoy listening to pop music which is very loud, and this can do harm to their eardrums (耳鼓). The noise level in some discos is far above the usual safety level for heavy industrial areas.

One recent report about noise and concentration suggested that although a lot of people say that any noise disturbs their concentration, what really influences their ability to concentrate is a change in the level of noise. It goes on to say that a background noise which doesn’t change too much (music, for example) may even help to concentrate.

【1】According to this passage, the noise pollution ____________________.

A. has become the worst in the countryside

B. has become better in big cities

C. has spread from cities to villages

D. has been controlled in modern cities

【2】Some people have their hearing harmed _____________.

A. while listening to pop music

B. in complete silence

C. when speaking loudly

D. while watching TV

【3】Which of the following isn’t included among the things causing noise?

A. trucks B. motorcycles

C. electric engines D. jet planes

【4】Scientists have discovered that what prevents people from concentrating on something is _______.

A. all kinds of noise B. great changes in the level of noise

C. background noise D. popular music

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】Kompong Phhluk Private Tour

Depart the city for an unspoiled floating community called Kompong Phhluk which is astonishing for its stilted-house villages and flooded forest.

Stop on the way for the Rolous Market tour. This is a great chance for you to take the photos of locals selling vegetables, different fish species and other local produce.

After this market tour we’ll all have a boat trip to the floating community of Kompong Phhluk, visit an island pagoda, a school and houses standing on 8 or 10m high stilts, fish farms and learn about the village life.

Stop and have lunch in a family’s house before getting into a row boat and venturing into the flooded forest, the habitat to some famous water-bird species.

Eventually we jump back into the big boat and set off for the largest fresh water lake in SE Asia, Tonle Sap.

Tour Details

·Departs 8:30am

·Returns around 2pm

·A picnic lunch with sandwiches and drinks is provided. We cannot provide local food from the area due to poor sanitation（衛(wèi)生）, lack of hygiene standards and refrigeration.

·No passes required

Rates

·These rates are based on an English speaking guide.

·Rates include all transport, water and a picnic lunch.

·Children 11 years and under are 50%.

·Children 4 years and below are free.

·If your group is larger than 5 people, please email us for the best rate.

Number of People Price Per Person

1 Person $65

2 People $45

3 People $40

4 People $35

5 People $32

What to Wear

·Please be mindful of your clothing and try to avoid anything too revealing.

·We strongly recommend a sunglasses, hat and sunscreen.

General Information

·This is a poor rural village, please be mindful of the environment.

· Please do not hand things out to villagers, for this contributes to creating a begging cycle and can create jealousy.

·We recommend heading to the toilet before you go on this trip as facilities are very basic.

【1】Kompong Phhluk is famous for its ______.

A. local vegetables and different fish species

B. stilted-house villages and flooded forest

C. Rolous Market and an island pagoda

D. water-bird habitat and fish farms

【2】A private trip for two parents and a 3-year-old boy costs ______.

A. $40 B. $80 C. $90 D. $120

【3】Which of the following is not included in the rates?

A. A tourist guide. B. Transport.

C. Drinks. D. Local food.

【4】We can conclude from the passage that ______.

A. the living standard in the village is quite low

B. the tourist facilities along the way are quite good

C. revealing clothes are appropriate in the hot weather

D. giving local children small gifts is strongly recommended

查看答案和解析>>

科目：高中英語(yǔ) 來源： 題型：

【題目】單詞拼寫

【1】A great many species are facing ___________(滅絕) with serious pollution.

【2】Luckily, all of miners s_______________ the explosion of the coal mine 100 meters underground.

【3】I’m so sorry to inform you that your ___________________(申請(qǐng)) for his job is rejected due to lack of related information.

【4】An unknown man broke into the room, i________________ the heated discussion.

【5】The secret organization is attempting to v_____________ other’s privacy for illegal benefit.

【6】60% of the locals, generally _______________(界定) as low-paid, are holding out for a higher pay.

【7】So a______________ is the new hairstyle that all the passers-by are looking at you admiringly.

【8】Little John ____________(猶豫) for a moment and then replied “OK”.

【9】The negative effects of alcohol on human _____________(行為)are ignored by many people.

【10】S______________ as he is, he has to bend to the authority (權(quán)威) of the state.

查看答案和解析>>

同步練習(xí)冊(cè)答案