LONDON----Here’s a new warning from health experts: Sitting is deadly.
Scientists are increasingly warning that sitting for prolonged periods — even if you also exercise regularly — could be bad for your health. And it doesn’t matter where the sitting takes place — at the office, at school, in the car or before a computer or TV — just the overall number of hours it occurs. Several studies suggest people who spend most of their days sitting are more likely to be fat, have a heart attack or even die.
In an editorial published this week in the British Journal of Sports Medicine, Elin EkblomBak of the Swedish School of Sport and Health Sciences suggested that authorities rethink how they define physical activity to highlight the dangers of sitting.
While health officials have issued guidelines recommending minimum amounts of physical activity, 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," Ekblom-Bak said. She explained that genes regulating(调节) 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 benefit if that exercise were spread across the day, rather than in a single bout.（一回）
Still, in a study published last year that tracked more than 17,000 Canadians for about a dozen years, researchers found people who sat more had a higher death risk, independently of whether or not they exercised.
"We don’t have enough evidence yet to say how much sitting is bad," said Peter Katzmarzyk of the Pennington Biomedical Research Center in Baton Rouge, who led the Canadian study. "But it seems the more you can get up and interrupt this sedentary behavior, the better."
Figures from a U.S. survey in 2003-2004 found Americans spend more than half their time sitting, from working at their desks to sitting in cars.
Experts said more research is needed to figure out just how much sitting is dangerous, and what might be possible tooffset those effects.
"People should keep exercising because that has a lot of benefits," Ekblom-Bak said. "But when they’re in the office, they should try to interrupt sitting as often as possible," she said. What is the best title for the text?
| A．Not Sitting Too Much While Working | B．How To Avoid Sitting Too Much |
| C．Sitting Too Much Could Be Deadly | D．More And More People Sit Too Much |
According to the research,______________.
| A．the more time you spend in exercising in a single bout, the healthier you will be. |
| B．those who often sit too much are sure to grow fat or suffer from a heart attack. |
| C．regular exercise is effective to get rid of the side effect of sitting too much. |
| D．you had better not sit for more than four hours in a single bout. |
How does the danger of sitting too much affect the human body?
| A．It results in a higher death risk. |
| B．It increases glucose and fat in the body. |
| C．It makes a person unable to exercise long enough in a day. |
| D．It causes the gene to fail to balance the glucose and fat in the body. |
In the opinion of Ekblom-Bak, you’d better have a rest in the office by________.
| A．sending your friends e-mails |
| B．having a walk around your office |
| C．chatting online or playing computer games |
| D．listening to music with your head on the desk. |
Education is required and free for every child in the United States. Most children start school by the age of six. They attend eight years of elementary school and four years of high school (or secondary school ).The money for free public schools comes from taxes, and each state is responsible for its own educational system .State legislatures (立法机关) set the educational requirements but leave the management of the schools in the hands of the local communities .Most states require their children to go to school until a certain age. This age varies from 16 to 18 years according to the laws of the individual state. The Federal government contributes funds to the states for additional schools and schools services.
After graduation from high school, a student can start his higher education in two –year college, a four-year college, a university or a specialized professional school----either public or private. Most colleges admit students on the basis of their high-school records. The cost of a college education is expensive in private universities, but it is much less in those supported by states and cities. Many students receive scholarships from the schools, the government, or private foundations and organizations. More than 50 percent of the college students work to help pay their college expenses.
Only 2 percent of the population of the country cannot read and write.Where does the money for public schools come from ?
A. From the Federal government
B. From the state legislatures.
C. From taxes
From the parents of the school children.What is the educational system in the United States based on ?
| A．The Federal government | B．Individual school |
| C．Individual state | D．Local communities |
What percentage of the population is illiterate (文盲) ？
| A．50 | B．2 | C．4 | D．6 |
How are college expenses of most students paid ?
A.They won earnings from part-time work .
B.Scholarship from the schools, the government or private foundations.
C. Taxes .
D. Both A and B.
T-shirts out; uniforms in
School uniforms（制服） are becoming more and more popular across the U.S.A. That’s no surprise, because they offer many benefits. They immediately end the powerful social sorting and labeling (标记) that come from clothing. If all students are dressed in the same way, they will not pay too much attention to their clo
thing, and some of them will not be laughed at for wearing the “wrong” clothes.
Some people are against the strict rule of school uniforms, but they do not realize that students already accept a kind of rule — wanting to look just like their friends. The difference is that the clothing students choose for themselves creates social barriers(障碍); school uniforms tear those barriers down.
As in other places, uniforms remind the wearers of their purposes and du
ties. For example, when a man or woman puts on a police uniform, he or she becomes, for a time, the symbol (象征) of law and order. The uniform means to the wearer his or her special duties and sends the same message to everyone the wearer meets. People with different jobs wear uniforms of one kind or another. For students, the school uniform reminds them that their task for the six or seven hours they are in school is to get an education.
Some parents are unhappy about uniforms, saying that school uniforms will affect their childrens creativity. First, as noted above, the clothes students choose to wear do not necessarily express their individuality (个性). They just copy their classmates. Second, students have the rest of the day to be as creative as they like. While they’re in school, their job is to master reading, writing, and maths; this should take up all the creativity they have. Mastery of those skills will be good for the students to build up their creativity in every way. In Paragraph 1, the word “benefits” probably means .
| A．tasks | B．messages | C．differences | D．advantages |
From the passage we learn that uniforms in general .
| A．prevent the wearers from being laughed at |
| B．help the wearers keep their duties in mind |
| C．are seen as a symbol of power |
| D．help to create social barriers |
Some people are against school uniforms because .
| A．they fail to realize that students have accepted the uniforms |
| B．they believe that uniforms will make students less creative |
| C．they don’t agree that uniforms can remove social barriers |
| D．they think that school uniforms are too popular |
The author would probably agree that .
| A．it makes no difference whether to wear school uniforms or not |
| B．students’ individuality may not come from school education |
| C．students’ creativity is related to the clothes they choose |
| D．school uniforms help to create equality among students |
School uniforms are becoming more and more popular and important because _____
| A．they can stop the powerful social sorting and labeling. |
| B．if all students are dressed in the same way, they will not pay too much attention to their clothing. |
| C．uniforms can remind the wearers of their purposes and duties |
| D．school uniforms will affect their children’s creativity. |
Who's in control of your life? Who's pulling your strings? For the majority of us, it's other people-society, colleagues, friends, family or our religious community. We learned this way of operating when we were very young, of course. We were brainwashed. We discovered that feeling important and feeling accepted was a nice experience and so we learned to do everything we could to make other people like us. As Oscar Wilde puts it, "Most people are other people. Their thoughts are someone else's opinions, their lives a mimicry, their passions a quotation."
So when people tell us how wonderful we are, it makes us feel good. We long for this, good feeling like a drug—we are addicted to it and seek it out wherever we can. Therefore, we are so eager for the approval (赞同) of others that we live unhappy and limited lives, failing to do the things we really want to. Just as drug addicts and alcoholics live worsened lives to keep getting their fix（一剂毒品）, we worsen our own existence to get our own constant fix of approval.
But, just as with any drug, there is a price to pay. The price of the approval drug is freedom—the freedom to be ourselves. The truth is that we cannot control what other people think. People have their own agenda, and they come with their own baggage and, in the end, they're more interested in themselves than in you. Furthermore, if we try to live by the opinions of others, we will build our life on sinking sand. Everyone has a different way of thinking, and people change their opinions all the time. The person who tries to please everyone will only end up getting exhausted (tired) and probably pleasing no one in the process.
So how can we take back control? I think there’s only one way make a conscious decision to stop caringwhat other people think. We should guide ourselves by means of a set of values—not values imposed from the outside by others, but innate values which come from within. If we are driven by these values and not by the changing opinions and value systems of others; we will live a more authentic, effective, purposeful and happy life.What Oscar Wilde says implies that________.
| A．most people have a variety of thoughts |
| B．we have thoughts similar to those of others |
| C．other people's thoughts are more important |
| D．most people's thoughts are controlled by others |
What does the author try to argue in the third paragraph?
| A．Changing opinions may cost us our freedom. |
| B．We may lose ourselves to please others. |
| C．We need to pay for what we want to get. |
| D．The price of taking the drug is freedom. |
It can be concluded from the passage that_______.
| A．it's better to do what we like |
| B．we shouldn't care what others think |
| C．we shouldn't change our own opinions |
| D．it's important to accept others' opinions |
The author tries to persuade the readers to accept his arguments mainly by________.
| A．analyzing causes and effects | B．providing examples and facts |
| C．discussing questions | D．making suggestions |
The word “conservation” has a thrifty meaning. To conserve is to save and protect, to leave what we ourselves enjoy in such a good condition that others may also share the enjoyment. Our forefathers had no idea that human population would increase faster than the supplies of raw materials: most of them, even until very recently, had the foolish idea that the treasures were “limitless” and could “last forever”. Most of the citizens of earlier generations knew little or nothing about the complicated and delicate system that runs all through nature, and which means that, as in a living body, an unhealthy condition of one part will sooner or later be harmful to all the others.
Fifty years ago, nature study was not part of school work; scientific forestry was a new idea; wood was still cheap because it could be brought in any quantity from distant woodlands; soil destruction and river floods were not national problems; nobody had yet studied long-term climatic cycles in relation to proper land use; even the word “conservation” had nothing of the meaning that it has for us today.
For the sake of ourselves and those who will come after us, we must now set about correcting the mistakes of our forefathers. Conservation should be made part of everybody’s daily life. To know about the water table (水位) in ground is just as important to us as a knowledge of the basic math formulas. We need to know why all watersheds (上游集水区) need the protection of plant life and why the running current of streams and rivers must be made to give their full benefit to the soil before they finally escape to the sea. We need to be taught the duty of planting trees as well as of cutting them. We need to know the importance of big, grown trees, because living space for most of man’s fellow creatures on this planet is figured not only in square measure of surface but also in cubic（立方体的）volume above the earth. In a word, it should be our goal to restore as much of the original beauty of nature as we can.The author’s attitude towards the use of natural resources is_________.
| A．positive | B．uninterested | C．optimistic | D．critical |
According to the author, the greatest mistake of our forefathers was that________.
| A．they had no idea about scientific forestry |
| B．they had little or no sense of environmental protection |
| C．they were not aware of the importance of nature study |
| D．they had no idea of how to make good use of raw materials |
To avoid repeating the mistakes of our forefathers, the author suggests that ________.
| A．we plant more trees |
| B．natural sciences be taught to everybody |
| C．environmental education be given to everybody |
| D．we return to nature |
How can you understand the underlined sentence in the last paragraph?
| A．Our living space on the earth is getting smaller and smaller. |
| B．Our living space should be measured in cubic volume. |
| C．We need to take some measures to protect space. |
| D．We must preserve good living condition for both birds and animals. |
A Beautiful Mind
A mathematician who goes mad is not a subject most directors consider commercially attractive, but then Ron Howard isn't among most directors. Despite an impressive list of credits, A Beautiful Mind is his most successful work to date, combining a psychological drama with a moving love story to produce a film that is as interesting as it is entertaining.
The Oscar winning Russell Crowe has put himself in line for further honours with his acting John Nash, the Nobel Prize-winning mathematician troubled by schizophrenia (精神分裂症). A Beautiful Mind pictures Nash as an unusual hero, not just because of his academic achievements but also because of the courage he displays while battling his illness.
In 1947, Nash was one of many great young minds at Princeton. “To find a truly original idea is the only way to distinguish myself,” the proud and determined student declared. His exploration of' such an idea afforded him little time for the normal socialising. His shyness and straightforward approach brought him few friends.
After finally hitting on a revolutionary new idea, Nash's career took off and his reputation was secured. He balanced research work with teaching, which is where he met the bright and beautiful student Alicia (Jennifer Connelly). Things in his life were going well when his talent for code breaking brought him to the attention of the military who employed him during the early stages of the cold war with Russia. However, the stress of his work made Nash's illness develop.
Crowe's performance is perfect. He and Connelly ignite (make something exciting) the film's passionate love story and Connelly's wonderful performance makes the audience moved by Alicia, whose courage, strength and faith in her husband are the primary reasons for his recovery.This passage is most probably __________.
| A．a book review | B．a movie review |
| C．a movie poster | D．an advertisement |
Which can replace the underlined phrase hitting on in the fourth paragraph?
| A．come up with | B．come on |
| C．put on | D．put up with |
The following statements are true EXCEPT that ______.
| A．John Nash did not go mad totally |
| B．Ron Howard is an outstanding director |
| C．the stress of the academic work caused Nash's illness |
| D．Nash's concentration on his work and his shyness brought him few friends |
We can infer from the text that_________.
| A．without Alicia, John Nash would not have recovered from schizophrenia |
| B．John Nash gave up his career when troubled by schizophrenia |
| C．Russell Crowe won another Oscar Award after this movie |
| D．John Nash volunteered to serve in the army |
粤公网安备 44130202000953号