单选题Stress is ______.

单选题The enclosures of the 17th and 18th centuries meant that people were ______.

单选题The majority of experts believe the use of critical thinking is ______.

单选题When researchers come up with a new treatment that makes us feel or work better, it's usually not just the truly sick who end up going in for an upgrade. The progress in developing treatments for illnesses that ravage memory and thought raises an important question: might the same tools be used to improve the functioning of minds that by most standards are already running fairly smoothly? We may well be approaching an era of designer brains, in which those of us feeling a little foggy or dull can have our IQ, fast recall, and self-confidence inflated up via the prescription pad. "Some brain-related conditions we think of as ordinary, "says one researcher, "may eventually become disorders, too" —including perhaps less-than-razor-sharp thinking. The notion of a prescription IQ lift is hardly new. According to polls, about one in 20 college students, and higher percentages of professors, already illicitly pop some form of Ritalin or Modafinil—legitimately prescribed for attention-deficit disorder and narcolepsy (嗜睡症), respectively—to augment alertness, concentration, and memory. But these drugs have proved only mildly effective on normal minds, and carry potentially severe side effects ranging from addiction to overstimulation. Scientists had originally hoped that the decoding of the human genome would lead quickly to small groups of genes that control major mental disorders and traits, be they Alzheimer's disease (老年痴呆症), intelligence, or personality. That hasn't been the case; individual genes turn out in most cases to only weakly affect the brain, with most illnesses emerging from the interaction of large, complex networks of hundreds of genes. That challenge hasn't kept researchers from tracking down many of the genes in these networks to chip away at the genetic roots of mental disorders—and to come up with possible treatments based on some of those findings. The result is that medicine may allow us to challenge our genetic inheritance and repair environmental insults to the brain, whether as Alzheimer's sufferers or just moody, forgetful people and hazy thinkers. Techniques undergoing testing now include altering genes within brain cells, or even pushing genes into creating altogether new brain cells. Neurologix in Fort Lee, New Jersey, for example, is developing brain-related gene therapies, which involve injecting harmless viruses that insert custom-built genes into cells. Though other experimental gene therapies have in the past often caused severe and even fatal side effects, Neurologix hopes to avoid them by targeting the viruses only at those cells that need repairing. In Fact, We won't necessarily have to turn to these more radical therapies to sharpen our thinking. The genetic and other new scientific insights into the brain are also helping to point the way to new drugs targeted at brain disorders—drugs that may also end up being taken as smart drugs by many of us without serious disorders.

单选题The American recovery seems to be picking up pace. The growth seems to be everywhere except the place it matters most—labour markets. Employment in America turned in a surprisingly poor performance in November, indicating that recovery still hasn't gotten the job creation machine turning steadily. The Bureau of Labour Statistics (BLS) reported a disappointing gain of only 39,000 jobs for the month of November. The figure came in well below expectations. In October, on Wednesday a private employment report estimated that the economy added 93,000 private sector workers. Markets had expected one of the strongest reports of the recovery so far. That's not what they received. In November, according to the BLS, private employers added just 50,000 new jobs—the worst performance since April. Within the private sector, drops in employment among goods-producing and retail trade firms were offset by new hires among professional and business services and in the health and education sectors. The unemployment rate rose to 9.8%—its highest level since April and close to the 10.1% recession peak. At 15.1 million, the number of unemployed workers rose back to its April high. Fully 6.3 million people have been out of work for more than 27 weeks. Many of these workers are now cycling off federal emergency unemployment benefits, which expired on November 30. Congress has yet to re-authorise the emergency benefits package, as it has done so many times through the recession. Some 2 million jobless workers may lose benefits by the end of 2010, and perhaps 4 million or more will lose them by April. There is little to be happy about in this report. But there are some indications that the November numbers may be an exception. September's job losses were revised down to 24,000 in this report, while October's job gains were revised upward, from 151,000 to 172,000. Through November, weekly data on initial jobless claims showed significant improvement. And of course, many other indicators have been flashing positive signs in recent weeks. It's likely that the November figures will be revised up in future months to show a better performance more in keeping with broader trends. And it's important to remember that monthly data are noisy. America's labour markets have yet to generate job growth sufficient to bring down the unemployment rate. But the pace of recovery has been improving. There is good reason to suspect that when all is said and done this report will appear as a tiny deviation from a strengthening upward employment trend. All the same, policymakers in Washington weighing whether to extend unemployment benefits and tax cuts should pay attention to the obvious weakness in labour markets.

单选题 Manners are different in every country; but true politeness is everywhere the same. Manners are only{{U}} 62 {{/U}}helps which ignorance assumes in order to{{U}} 63 {{/U}}politeness, which is the result of good sense and good{{U}} 64 {{/U}}A person possessed of those qualities, though he had never seen a court, is truly{{U}} 65 {{/U}}; and if without them, would continue a clown,{{U}} 66 {{/U}}he had been all his life a gentleman usher. He who{{U}} 67 {{/U}}airs of importance exhibits his {{I}}credentials{{/I}} (证明)of{{U}} 68 {{/U}}. There is no policy like politeness; and a good manner is the best thing in the world to get a good name, or to{{U}} 69 {{/U}}the want of it. Good manners are a part of good morals, and it is{{U}} 70 {{/U}}much our duty as our interest to practice in both. Good manners are the art of making those around us easy.{{U}} 71 {{/U}}makes the fewest persons{{U}} 72 {{/U}}is the best bred man in the company. Good manners should begin at home. A person{{U}} 73 {{/U}}appears so ridiculous by the qualities he has, as by those he{{U}} 74 {{/U}}to have. He gains more by being{{U}} 75 {{/U}}to be seen as he is, than by attempting to appear{{U}} 76 {{/U}}he is not. Good manners is the result of much good sense, some good nature, and a little self-denial, for the{{U}} 77 {{/U}}of others, and with a view to obtain the same indulgence from them. "{{U}} 78 {{/U}}make the man," says the proverb. It may be true that some men's man hers have been the making of them;{{U}} 79 {{/U}}as manners are rather the expression of the man, it would be more{{U}} 80 {{/U}}to say the man makes the manners. Social courtesies should arise from the heart; the worth of manners consists{{U}} 81 {{/U}}being the sincere expressions of feelings.

单选题It has been found that vitamin E______.

单选题A great deal of attention is being paid today to the so-called digital divide—the division of the world into the info (information) rich and the info poor. And that (62) does exist today. My wife and I lectured about this looming danger twenty years ago. What was less (63) then, however, were the new, positive (64) that work against the digital divide. (65) , there are reasons to be (66) . There are technological reasons to hope the digital divide will narrow. As the Internet becomes more and more (67) , it is in the interest of business to universalize access—after all, the more people online, the more potential (68) there are. More and more (69) , afraid their countries will be left (70) , want to spread the Internet access. Within the next decade or two, one to two billion people on the planet will be (71) together. As a result, I now believe the digital divide will (72) rather than widen in the years ahead. And that is very good news because the Internet may well be the most powerful tool for (73) world poverty that we've ever had. Of course, the use of the Internet isn't the only way to (74) poverty. And the Internet is not the only tool we have. But it has (75) potential. To (76) advantage of this tool, some poor countries will have to get over their outdated anti-colonial prejudices (77) respect to foreign investment. Countries that still think foreign investment is a/an (78) of their sovereignty might well study the history of (79) ( the basic structural foundations of a society) in the United States. When the United States built its industrial infrastructure, it didn't have the capital to do so. And that is (80) America's Second Wave infrastructure— (81) roads, harbors, highways, ports and so on—were built with foreign investment.

单选题This year, more than 43 million people are expected to visit Disney"s theme park complexes in California, Florida, Paris, Hong Kong and Tokyo. But visiting can require a huge commitment. A one-day admission to Anaheim, California"s famed Disneyland in June, for instance, starts at $87 for those aged 10 and older. To get your money"s worth, it pays to check out independent Disney trip-planning websites in advance. They have excellent track records for keeping their detailed trip-planning resources up to date, and are not affiliated with the Disney brand, enabling them to provide unbiased recommendations for saving money at the various parks. Some of the sites also dispense advice on how to avoid long queues, find lodging and otherwise make the most of your visit. Undercover Tourist is a website run since 2000 by an authorized Orlando broker where tickets to Florida"s Walt Disney World are usually less expensive than tickets sold at the park gate; a recent five-day pass purchased through Undercover Tourist was 11% cheaper. The site anticipates that Walt Disney World will hike single-day admission prices this year—the park traditionally makes these announcements every June and has been averaging 6% hikes in recent years—but notes that tickets booked at current prices will remain valid, so you can buy tickets now, and use them after the price hike. The site also sells competitively-priced lodging and discount tickets to other Orlando-area attractions, such as SeaWorld or Universal Studios. As a bonus, the website"s free apps for iPhone, Android, and Blackberry list real-time wait times at all the rides in the park. Mousesavers specializes in publishing deals and promotions offered by Disney and related companies, such as 15% discounts off park hotel stays. The 12-year-old site mainly publishes deals for Disney"s US parks, though non-US residents can take advantage of most of the offers and the site does have trip-planning information for the non-US locations. Especially useful is Mousesavers" frequently asked questions sections for the California and Florida parks. For example, the site explains that some non-Disney affiliated hotels near Disneyland and Walt Disney World pay for the fight to advertise themselves as official Disney"s "Good Neighbor" hotels. But according to Mousesavers, these hotels aren"t consistently better in quality, price or upkeep than other properties in the area and the label shouldn"t be used as a factor when picking a place to stay. Theme Park Insider, founded in 1999, its coverage of global Disney parks is incredibly authoritative. In a May blog post, it pointed out that Disneyland is heavily patronized by locals—hundreds of thousands of whom hold annual passes. So the site recommends you visit on dates when those annual passes aren"t valid, such as on Saturdays in June and July.

单选题The world is going through the biggest wave of mergers and acquisitions (收购) ever witnessed. The process sweeps from hyperactive America to Europe and reaches the emerging countries with unsurpassed might. Many in these countries are looking at this process and worrying: "Won't the wave of business concentration turn into an uncontrollable anti-competitive force?" There's no question that the big are getting bigger and more powerful. Multinational corporations accounted for less than 20% of international trade in 1982. Today the figure is more than 25% and growing rapidly. International affiliates account for a fast-growing segment of production in economies that open up and welcome foreign investment. In Argentina, for instance, after the reforms of the early 1990s, multinationals went from 43% to almost 70% of the industrial production of the 200 largest firms. This phenomenon has created serious concerns over the role of smaller economic firms, of national businessmen and over the ultimate stability of the world economy. I believe that the most important forces behind the massive M＆A wave are the same that underlie the globalization process: falling transportation and communication costs, lower trade and investment barriers and enlarged markets that require enlarged operations capable of meeting customers' demands. All these are beneficial, not detrimental, to consumers. As productivity grows, the world's wealth increases. Examples of benefits or costs of the current concentration wave are scanty. Yet it is hard to imagine that the merger of a few oil firms today could recreate the same threats to competition that were feared nearly a century ago in the U.S., when the Standard Oil trust was broken up. The mergers of telecom companies, such as World Com, hardly seem to bring higher prices for consumers or a reduction in the pace of technical progress. On the contrary, the price of communications is coming down fast. In cars, too, concentration is increasing—witness Daimler and Chrysler, Renault and Nissan—but it does not appear that consumers are being hurt. Yet the fact remains that the merger movement must be watched. A few weeks ago, Alan Greenspan warned against the mega mergers in the banking industry. Who is going to supervise, regulate and operate as lender of last resort with the gigantic banks that are being created? Won't multinationals shift production from one place to another when a nation gets too strict about violation to fair competition? And should one country take upon itself the role of "defending competition" on issues that affect many other nations, as in the U.S. vs. Microsoft case?

单选题Questions 9 to 12 are based on the passage you have just heard.

单选题The direct rays of the sun touch the equator and strike northward toward the Tropic of Cancer. In the Southern hemisphere winter has begun, and it is summer north of the equator. The sea and air grow warmer; the polar air of winter begins its gradual retreat. The northward shift of the sun also brings the season of tropical cyclones to the northern hemisphere, a season that is ending for the Pacific and India Oceans south of the equator. Along our coasts and those of Asia, it is time to look seaward, to guard against the season's storms. Over the Pacific, the tropical cyclone season is never quite over, but varies in intensity. Every year, conditions east of the Philippines send a score of violent storms howling toward Asia, but it is worst from June through October. Southwest of Mexico, a few Pacific hurricanes will grow during spring and summer, but most will die at sea or perish over the desert or the lower California coast as squalls. Along our Atlantic and Gulf coasts, the hurricane season is from June to November. In an average year, there are fewer than ten tropical cyclones and six of them will develop into hurricanes. These will kill 50 to 100 persons between Texas and Maine and cause property damage of more than ＄100 million. If the year is worse than average, we will suffer several hundred deaths, and property damage will run to billions of dollars. Tornadoes, floods, and severe storms are in season elsewhere on the continent. Now, to these destructive forces must be added the hazard of the hurricane. From the National Hurricane Center in Miami, a radar fence reaches westward to Texas and northward to New England. It provides a 200-mile look into offshore disturbances. In Maryland, the giant computers of the National Meteorological Center digest the myriad bits of data-atmospheric pressure, temperature, humidity, surface winds, and winds aloft-received from weather stations and ships monitoring the atmospheric setting each hour, every day. Cloud photographs from spacecraft orbiting the earth are received in Maryland and are studied for the telltale spiral on the warming sea. The crew of United States aircraft over the Gulf of Mexico, Caribbean, and Atlantic watch the sky and wait for the storm that will bear a person's name. The machinery of early warning vibrates with new urgency as the season of great storms begins.

单选题

单选题 Passage Two Questions 30 to 32 are based on the passage you have just heard.

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单选题 {{B}}Questions 29 to 31 are based on the passage you have just heard.{{/B}}

单选题There ______ any orange in the bottle. A. aren't B. are C. isn't

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单选题They believed that this was not the ______ of their campaign for equality but merely the beginning.