单选题The goals and desires______ widely between men and women, between the rich and the poor.(2002年上海交通大学考博试题)

单选题The government is ______ its policy of helping the unemployed.

单选题It never rains but it pours. Just as bosses and boards have finally sorted out their worst accounting and compliance troubles, and improved their feeble corporation governance, a new problem threatens to earn them -- especially in American--the sort of nasty headlines that inevitably lead to heads rolling in the executive suite: data insecurity. Left, until now, to odd, low-level IT staff to put right, and seen as a concern only of data-rich industries such as banking, telecoms and air travel, information protection is now high on the boss's agenda in businesses of every variety. Several massive leakages of customer and employee data this year-- from organizations as diverse as Time Warner, the American defense contractor Science Applications International Corp and even the University of California, Berkeley——have left managers hurriedly peering into their intricate IT systems and business processes in search of potential vulnerabilities. "Data is becoming an asset which needs to be guarded as much as ally other asset," says Haim Mendelson of Stanford University's business school. "The ability to guard customer data is the key to market value, which the board is responsible for on behalf of shareholders". Indeed, just as there is the concept of Generally Accepted Accounting Principles (GAAP), perhaps it is time for GASP. Generally Accepted Security Practices, suggested Eli Norm of New York's Columbia Business School. "Setting the proper investment level for security, redundancy, and recovery is a management issue, not a technical one." he says. The mystery is that this should come as a surprise to any boss. Surely it should be obvious to the dimmest executive that trust, that most valuable of economic assets, is easily destroyed and hugely expensive to restore -- and that few things are more likely to destroy trust than a company letting sensitive personal data get into the wrong hands. The current state of affairs may have been encouraged -- though not justified-- by the lack of legal penalty (in America, but not Europe) for data leakage. Until California recently passed a law, American firms did not have to tell anyone, even the victim, when data went astray. That may change fast: lots of proposed data-security legislation is now doing the rounds in Washington, D.C. Meanwhile, the theft of information about some 40 million credit-card accounts in America, disclosed on June 17th, overshadowed a hugely important decision a day earlier by America's Federal Trade Commission (FTC) that puts corporate America on notice that regulators will act if firms fall to provide adequate data security.

单选题In the United States, the number of (deads) due to heart attack and (related) conditions (fell) by 25 percent (between) 1985 and 1990.

单选题When Brad offered his old wooden desk at a garage sale, no one bought it, even though he offered it for only $10. When he offered it at the local auction house, however, someone bought it for $850. Which of the following, if true, best explains why Brad was able to sell the desk for a high price at the auction while he could not sell it for a much lower price at the garage sale? A. Brad advertised that the proceeds of the garage sale would benefit a local charity, while he made no such claims for the proceeds from the auction. B. One of the legs of the desk was shorter than the other three, producing an unbalanced writing surface. C. The auction house specializes in selling antique furniture, which is generally valued more highly than the discarded furniture sold at garage sales. D. Brad insisted that anyone who bought the desk had to use it as an actual workspace. E. Prospective buyers at auctions are often more interested in the auction process than in the items up for bid.

单选题It might be the case that the economy is fundamentally unchanged from where it was a year or two ago, but has received a boost from the falling cost of petrol and other commodities.

单选题Which of the following is an independent country?

单选题—My watch is not working. ________? 　　—It’s ten past eleven.

单选题We learn from the passage that dot-com companies

单选题 It seems to happen with depressing frequency-surely skies turn to rain just as the weekend arrives. Now Spanish researchers say they have evidence that in some parts of Europe the weather really does follow a weekly cycle, although not in the straightforward way that the anecdote might suggest. Evidence has been mounting over the years that the weather in certain parts of the world, including the US, Japan and China, can be driven by the weekly cycle of human activity. This is because we tend to produce more air pollution during the week and less at the weekend. Evidence that such an effect occurs in Europe is controversial and has been harder to come by. Arturo Sanchez-Lorenzo of the University of Barcelona, Spain, and his colleagues examined data gathered between 1961 and 2004 from weather stations across Spain to see whether such a pattern existed. They claim to have found it in Spain, as well as hints of weekly changes in air circulation more broadly over Western Europe. The result is puzzling, but it is known that airborne pollutants produced by human activity can affect the weather in a variety of ways. For example, particles can be heated by absorbing sunlight, which in turn heats the air and changes air circulation patterns. Pollutant particles can also provide seeds for cloud formation. Exactly which effect has the greatest influence seems to depend on conditions that vary season by season. They also found signs that air pressure in Western Europe tends to be lower midweek than at the weekend in data from a global database. This suggests that the human influence on weather goes beyond known local effects, says team member Josep Calbó of the University of Girona in Spain. However, it is not clear whether the team's findings are statistically significant, says Thomas Bell of NASA's Goddard Space Flight Center in Greenbelt, Maryland, who was part of a team that found a stronger weekly cycle in the US. "This whole enterprise of looking for weekly cycles is rife with possibilities for misleading oneself." Why a weekly cycle would be less noticeable in Europe than in the US and Asia is still unknown. No weekly cycle has ever been found in the UK, probably because the weather is dominated by large systems blowing in from the Atlantic Ocean. These larger systems may be harder for weekly pollution cycles to influence, points out Douglas Maraun of the University of East Anglia in Norwich, who studies UK precipitation. "I doubt that there is a weekly influence of human activity on such a large weather system," he says.

单选题We are all for your proposal that the discussion ______. A. be called off B. was called off C. should call off D. is to call off

单选题We are trying to return the money to ______ lost it.A. the boy B. who C. the one that D. whom

单选题He kept his eyes ______ on the screen of the computer to find his useful information.

单选题He ______ a cold last week. A. had caught B. caught C. has caught D. has had

单选题Concerning money or anything else, conflicts between husband and wife usually reflect a power struggle. Conflicts between parent and child often center around the same issue. As children enter adolescence, they begin to demand greater freedom to go where they please, do what they please, and make decisions without parental interference. Many American parents do not know how to deal with their teenagers and seek advice from books, lectures, and parent-training courses. Parents want to maintain a friendly relationship with their teenagers and also want to guide them so that their behavior will be whatever the parents consider proper and constructive. But in a society of rapidly changing social and moral values, parents and children often disagree about what is important and what is right. Arguments may concern such unimportant matters as styles of dress or hairdos. But quarrels may also concern school work, after school jobs, decisions, use of the family car, dating, and sexual behavior. Some families have serious problems with teenagers who drop out of school, run away from home, or use illegal drugs. Because so much publicity is given to the problem teenager, one gets the impression that all teenagers are troublemakers. Actually, relatively few adolescents do anything wrong, and nearly all grow up into "solid citizens" who fulfill most of their parents' expectations. In fact, recent studies show that the "generation gap" is narrowing. The vast majority of teenagers share most of their parents' values and ideas. Many parents feel that they get along with their adolescents quite well.

单选题A lie can travel half way around the world while the truth is putting on its shoes.