单选题Which of the following is NOT mentioned as a possible cause of lung diseases?

单选题Every chemical change either results from energy being used to produce the change, or causes energy to be ______ in some form.

单选题The hum of conversation ______ as the chairman mounted the rostrum. A. died out B. died off C. died of D. died away

单选题The authority urged the rebellious party to ______ their arms and come back to the negotiating table.

单选题 New research has found that those who work 11-hour days or more increase their chance of a heart attack by two thirds. If you're about to embark on your usual 12-hour day at the office, you might want to pause a while—a few hours, actually. A study has found that those who spend more than 11 hours at work increase their chance of having a heart attack by two thirds. The team from University College London looked at more than 7,000 civil servants working in Whitehall over a period of 11 years and established how many hours they worked on average a day. They also collected information including the condition of their heart from medical records and health checks. Over the period, a total of 192 had suffered a heart attack. Then the study was published in the journal Annals of Internal Medicine, reporting that those who worked more than 11 hours a day were 67 percent more likely to have one than those who had a 'nine to five' job. Professor Mika Kivimki, who led the study, said: 'We have shown that working long days is associated with a remarkable increase in risk of heart disease. Considering that including a measurement of working hours in a GP interview is so simple and useful, our research presents a strong case that it should become standard practice. This new information should help improve decisions regarding medication for heart disease.' 'It could also be a wake-up call for people who over-work themselves, especially if they already have other risk factors,' Professor Kivimki added. Around 2.6 million Britons have heart disease, where the organ's blood supply is blocked by the build-up of fatty deposits in the coronary arteries (冠状动脉). It is the nation's biggest killer, claiming 101,000 lives in this country every year. Heart attacks occur when a coronary artery becomes completely blocked; if the blood supply is not restored, the section of the heart being supplied by the artery will die.

单选题It was all agreed that the first problem the new government would have to ______ was unemployment.

单选题The author states that birds left the tropics because ______.

单选题If ______ and lodging are included in educational fees, a university student in the U.S. will need approximately $10,000 a year. A. meal B. board C. food D. provisions

单选题 Directions: For this part, you are allowed 30 minutes to write a short essay entitled On College Students' Career Planning following the outline given below. You should write at least 120 words but no more than 180 words. On College Students' Career Planning 1．近年来，大学生职业生涯规划越来越受重视 2．分析产生这种现象的原因 3．大学生应该如何规划自己的职业生涯

单选题People Use Technology More, Sleep LessPeople in Britain now spend more time watching TV, gaming, and using their mobile phones and computers than sleeping. A study __31__ that British people use techn

单选题Although we live in a quiet and small street, all the necessary shops are close ______.

单选题The items contained in the parcel don't correspond ______ those on the list that accompanied it.

单选题 Drinking more water is good for the rest of your body, helping to lubricate joints and ______ toxins and impurities.

单选题 A Nation That's Losing Its Toolbox A. The scene inside the Home Depot on Weyman Avenue here would give the old-time American craftsman pause. In Aisle 34 is precut plastic flooring, the glue already in place. In Aisle 26 are prefabricated windows. Stacked near the checkout counters, and as colorful as a Fisher-Price toy, is a not-so-serious-looking power tool: a battery-operated saw-and-drill combination. And if you don't want to do it yourself, head to Aisle 23 or Aisle 35, where a help desk will arrange for an installer. B. It's all very handy stuff, I guess, a convenient way to be a do-it-yourselfer without being all that good with tools. But at a time when the American factory seems to be a shrinking presence, and when good manufacturing jobs have vanished, perhaps never to return, there is something deeply troubling about this dilution of American craftsmanship. C. This isn't a lament (伤感)—or not merely a lament—for bygone times. It's a social and cultural issue, as well as an economic one. The Home Depot approach to craftsmanship—simplify it, dumb it down, hire a contractor—is one signal that mastering tools and working with one's hands is receding in America as a hobby, as a valued skill, as a cultural influence that shaped thinking and behavior in vast sections of the country. D. That should be a matter of concern in a presidential election year. Yet neither Barack Obama nor Mitt Romney promotes himself as tool-savvy (使用工具很在行的) presidential timber, in the mold of a Jimmy Carter, a skilled carpenter and cabinet maker. E. The Obama administration does worry publicly about manufacturing, a first cousin of craftsmanship. When the Ford Motor Company, for example, recently announced that it was bringing some production home, the White House cheered. 'When you see things like Ford moving new production from Mexico to Detroit, instead of the other way around, you know things are changing,' says Gene Sperling, director of the National Economic Council. F. Ask the administration or the Republicans or most academics why America needs more manufacturing, and they respond that manufacturing gives birth to innovation, brings down the trade deficit strengthens the dollar, generates jobs, arms the military and brings about a recovery from recession. But rarely, if ever, do they publicly take the argument a step further, asserting that, a growing manufacturing sector encourages craftsmanship and that craftsmanship is, if not a birthright, then a vital ingredient of the American self-image as a can-do, inventive, we-can-make-anything people. G. Traditional vocational training in public high schools is gradually declining, stranding thousands of young people who seek training for a craft without going to college. Colleges, for their part, have since 1985 graduated fewer chemical, mechanical, industrial and metallurgical (冶金的) engineers, partly in response to the reduced role of manufacturing, a big employer of them. H. The decline started in the 1950s, when manufacturing generated a sturdy 28% of the national income, or gross domestic product, and employed one-third of the workforce. Today, factory, output generates just 12% of G.D.P. and employs barely 9% of the nation's workers. Mass layoffs and plant closings have drawn plenty of headlines and public debate over the years, and they still occasionally do. But the damage to skill and craftsmanship—what's needed to build a complex airliner or a tractor, or for a worker to move up from assembler to machinist to supervisor—went largely unnoticed. I. 'In an earlier generation, we lost our connection to the land, and now we are losing our connection to the machinery we depend on,' says Michael Hout, a sociologist at the University of California, Berkeley. 'People who work with their hands,' he went on, 'are doing things today that we call service jobs, in restaurants and laundries, or in medical technology and the like.' J. That's one explanation for the decline in traditional craftsmanship. Lack of interest is another. The big money is in fields like finance. Starting in the 1980s, skill in finance grew in importance, and, as depicted in the news media and the movies, became a more appealing source of income. K. By last year, Wall Street traders, bankers and those who deal in real estate generated 21% of the national income, double their share in the 1950s. And Warren Buffett, the good-natured financier, became a homespun folk hero, without the tools and overalls (工作服). 'Young people grow up without developing the skills to fix things around the house,' says Richard Curtin, director of the Thomson Reuters/University of Michigan Surveys of Consumers. 'They know about computers, of course, but they don't know how to build them.' L. Manufacturing's shrinking presence undoubtedly helps explain the decline in craftsmanship, if only because many of the nation's assembly line workers were skilled in craft work, if not on the job then in their spare time. In a late 1990s study of blue-collar employees at a General Motors plant (now closed) in Linden, N.J., the sociologist Ruth Milkman of City University of New York found that many line workers, in their off-hours, did home renovation and other skilled work. 'I have often thought,' Ms. Milkman says, 'that these extracurricular jobs were an effort on the part of the workers to regain their dignity after suffering the degradation of repetitive assembly line work in the factory.' M. Craft work has higher status in nations like Germany, which invests in apprenticeship (学徒) programs for high school students. 'Corporations in Germany realized that there was an interest to be served economically and patriotically in building up a skilled labor force at home; we never had that ethos (风气),' says Richard Sennett, a New York University sociologist who has written about the connection of craft and culture. N. The damage to American craftsmanship seems to parallel the steep slide in manufacturing employment. Though the decline started in the 1970s, it became much steeper beginning in 2000. Since then, some 5.3 million jobs, or one-third of the workforce in manufacturing, have been lost. A stated goal of the Obama administration is to restore a big chunk of this employment, along with the multitude of skills that many of the jobs required. O. As for craftsmanship itself, the issue is how to preserve it as a valued skill in the general population. Ms. Milkman, the sociologist, argues that American craftsmanship isn't disappearing as quickly as some would argue—that it has instead shifted to immigrants. 'Pride in craft, it is alive in the immigrant world,' she says. P. Sol Axelrod, 37, the manager of the Home Depot here, fittingly learned to fix his own car as a teenager, even changing the brakes. Now he finds immigrant craftsmen gathered in abundance outside his store in the early morning, waiting for it to open so they can buy supplies for the day's work as contractors. Skilled day laborers, also mostly immigrants, wait quietly in hopes of being hired by the contractors. Q. Mr. Axelrod 'also says the recession and persistently high unemployment have forced many people to try to save money by doing more themselves, and Home Depot in response offers classes in fixing water taps and other simple repairs. The teachers are store employees, many of them older and semi-retired from a skilled trade, or laid off. R. 'Our customers may not be building cabinets or outdoor decks; we try to do that for them,' Mr. Axelrod says, 'but some are trying to build up skill so they can do more for themselves in these hard times.'

单选题 家庭是社会的基本单位，它的结构随着社会的发展而变化。在中国几千年的封建社会里，自给自足的(self-sufficient)经济占主导地位。家庭不仅是日常生活的基本单位，也是生产的基本单位。那时，理想的、令人羡慕的家庭是五世同堂，家里的大事由男人做主。近百年来，中国发生了巨大变化，中国社会经过漫长的封建时期进入了社会主义社会。这具有历史意义的变化使中国家庭的结构也改变了。人口众多的大家庭开始分成较小的家庭和直系家庭，总的趋势是出现了越来越多的核心家庭。

单选题The young man asked his parents not to worry because he was full of {{U}}optimism{{/U}} about his career.

单选题John's never been to new York. ____ ?