单选题Saussure is closely connected with ______. A. Langue B. Competence C. Etic

单选题In the early 1960s Wilt Chamberlain was one of only three players in the National Basketball Association (NBA) listed at over seven feet. If he had played last season, however, he would have been one of 42. The bodies playing major professional sports have changed dramatically over the years, and managers have been more than willing to adjust team uniforms to fit the growing numbers of bigger, longer frames. The trend in sports, though, may be obscuring an unrecognized reality: Americans have generally stopped growing. Though typically about two inches taller now than 140 years ago, today"s people—especially those born to families who have lived in the U.S. for many generations—apparently reached their limit in the early 1960s. And they aren"t likely to get any taller. "In the general population today, at this genetic, environmental level, we"ve pretty much gone as far as we can go," says anthropologist William Cameron Chumlea of Wright State University. In the case of NBA players, their increase in height appears to result from the increasingly common practice of recruiting players from all over the world. Growth, which rarely continues beyond the age of 20, demands calories and nutrients—notably, protein—to feed expanding tissues. At the start of the 20th century, under-nutrition and childhood infections got in the way. But as diet and health improved, children and adolescents have, on average, increased in height by about an inch and a half every 20 years, a pattern known as the secular trend in height. Yet according to the Centers for Disease Control and Prevention, average height—5"9" for men, 5"4" for women—hasn"t really changed since 1960. Genetically speaking, there are advantages to avoiding substantial height. During childbirth, larger babies have more difficulty passing through the birth canal. Moreover, even though humans have been upright for millions of years, our feet and back continue to struggle with bipedal posture and cannot easily withstand repeated strain imposed by oversize limbs. "There are some real constraints that are set by the genetic architecture of the individual organism," says anthropologist William Leonard of Northwestern University. Genetic maximums can change, but don"t expect this to happen soon. Claire C. Gordon, senior anthropologist at the Army Research Center in Natick, Mass, ensures that 90 percent of the uniforms and workstations fit recruits without alteration. She says that, unlike those for basketball, the length of military uniforms has not changed for some time. And if you need to predict human height in the near future to design a piece of equipment, Gordon says that by and large, "you could use today"s data and feel fairly confident."

单选题Unfortunately, he hit a traffic jam and missed the train ______ a few minutes.

单选题The passage's success lies in its extensive use of ______.

单选题Could the bad old days of economic decline be about to return? Since OPEC agreed to supply-cuts in March, the price of crude oil has jumped to almost $26 a barrel, up from less than $10 last December. Tbis near-tripling of oil prices calls up scary memories of the 1973 oil shock, when prices quadrupled, and 1979-1980, when they also almost tripled. Both previous shocks resulted in double-digit inflation and global economic decline. So where are the headlines warning of gloom and doom this time? The oil price was given another push up this week when Iraq suspended oil exports. Strengthening economic growth, at the same time as winter grips the northern hemisphere, could push the price higher still in the short term. Yet there are good reasons to expect the economic consequences now to be less severe than in the 1970s. In most countries the cost of crude oil now accounts for a smaller share of the price of petrol than it did in the 1970s. In Europe, taxes account for up to four-fifths of the retail price, so even quite big changes in the price of crude have a more muted effect on pump prices than in the past. Rich economies are also less dependent on oil than they were, and so less sensitive to swings in the oil price. Energy conservation, a shift to other fuels and a decline in the importance of heavy, energy-intensive industries have reduced oil consumption. Software, consultancy and mobile telephones use far less oil than steel or car production. For each dollar of GDP ( in constant prices) rich economies now use nearly 50% less oil than in 1973. The OECD estimates in its latest Economic Outlook that, if oil prices averaged $22 a barrel for a full year, compared with $13 in 1998, this would increase the oil import bill in rich economies by only 0.25% ~ 0.5% of GDP. That is less than one-quarter of the income loss in 1974 or 1980. On the other hand, oil-importing emerging economies—to which heavy industry has shifted—have become more energy-intensive, and so could be more seriously squeezed. One more reason not to lose sleep over the rise in oil prices is that, unlike the rises in the 1970s, it has not occurred against the background of general commodity-price inflation and global excess demand. A sizable port/on of the world is only just emerging from economic decline. The Economist's commodity price index is broadly unchanging from a year ago. In 1973 commodity prices jumped by 70% , and in 1979 by almost 30%.

单选题What is the purpose of devising Turing Machine? A．To calculate. B．To make an experiment. C．To show that the machine is part of a test. D．To specify what should be understood by a mechanical process.

单选题Which of the following statements best expresses the author's attitude toward the damage to vegetation caused by foraging elephants?

单选题The "reconfiguration plan'(Par

单选题When you are on the Information Highway, which of the following is not necessary for you to learn? A．How Web pages are put together. B．How to write software. C．How to surf the Internet. D．How to drive cars.

单选题Such ______ the case, there are no grounds to justify your complaints. A. be B. was C. being D. as

单选题Amazon has given in to publisher pressure and agreed to abandon their $9.99 price point for e-Books. PuNisher Macmillan felt that the $9.99 price devalued many of its bestsellers, which often sell for $30 in hardcover format. In response to the pricing dispute, Amazon briefly removed all Macmillan books from its store last week. However, the boycott lasted only a few days before Amazon gave in to Macmillan's demands. In a statement Sunday, Amazon defended its position to customers: Macmillan, one of the "big six" publishers, has clearly communicated to us that, regardless of our viewpoint, they are committed to switching to an agency model and charging $12.99 to $14.99 for e-Book versions of bestsellers and most hardcover releases. We have expressed our strong disagreement and the seriousness of our disagreement by temporarily ceasing the sale of all Macmillan titles. We want you to know that ultimately, however, we will have to capitulate and accept Macmillan's terms because Macmillan has a monopoly over their own titles, and we will want to offer them to you even at prices we believe are needlessly high for e-Books. Amazon's decision to throw in the towel may be related to Macmillan's recent agreement to sell books in Apple's iBookstore. Amazon has captured an overwhelming share of the e-Book market with its Kindle reader, but if the iPad becomes successful publishers may turn to Apple to sell their e-Books. Publishers seem more interested in protecting the value of their hardcover books than competing in a digital format. Will higher e-Book prices convince you to purchase a physical copy of your next novel, or will you accept a modest price increase given that e-Books are typically cheaper?

单选题Many pure metals have little use because they are too soft, rust too easily, or have some other______.(电子科技大学2005年试题)

单选题 Directions: In this part there are four passages, each followed by five questions or unfinished statements. For each of them, there are four suggested answers. Choose the one that you think is the best answer. Mark your ANSWER SHEET by drawing with a pencil a short bar across the corresponding letter in the brackets.{{B}}11-15{{/B}} Communication is the sending of information or news from one person to another. If human beings could not communicate with one another, each person would have to learn everything for himself. Although animals as well as men can communicate, so far as we know, they can express only the simple emotions like pain, joy, fear, hunger, anger and love. Some animals have a more advanced form of language using sounds, and others use a wide range of sounds and face movements, but we still have much to learn about these animal languages. Speech is the most important means of communication between people. But it is not the only one. Nor is it the oldest. We use facial expressions, gestures and hand movements to express our feelings and to send signals to other people. Animals use this "body language" a great deal. The sign language used by deaf people is an example of communication without speech, while blind people communicate largely through touch and hearing.

单选题The work that women do has always been fundamental to the global economy. But their contribution hasn't registered with traditional economic institutions because so much of it has been nonmonetary. In fact, one common economic term for nonmonetary work is inactivity. It's that attitude that has made women's work invisible. No wonder the battle cry of the women's movement was equality. By moving into the world of paid work, in rich countries at least, women have indeed upped their visibility. But I doubt that you could make a very conclusive case that they have become equal to men. The United Nations estimated in 1993 that economic equality between the sexes would take, at the pace then prevailing, 1,000 years to achieve. The media love female high fliers, the handful of company directors and CEOs who are trotted out time and again as evidence of the gains women have made. But they are not truly representative of the average working woman, saddled with a double burden as she tries to balance her job with life as a mother and homemaker. This balancing act is a formula for unfulfillment. It would have been far more equitable for women in the long run if it was the nonmonetary work that had been shared out — if, for example, men spent more than a fraction of the time with their children that their wives do. And I believe that, in practice, most women would prefer simple fairness to economic equality. As my friend Hazel Henderson says, our kids didn't want to see us turn into the best bloody men. Still, it's very much a trend to focus on the global economic impact of women, particularly as it's felt in the small-scale initiatives that women have established around the world. Dealing directly with economically marginalized communities and cooperatives around the globe, I've seen how women hold a society together. Economic opportunity means much more to them than money. It also fosters the fundamentals of self-esteem education, health care, cultural continuity and the chance to protect the past while shaping a future. A sense of community is one of the so-called "feminine" values that ethical business thinkers put forward in their quest for new paradigms. These values reflect intimate personal and cultural attributes that are in many ways the reverse of the global-market syndrome, which is all about distance, impersonality and the movement of capital regardless of human consequence. You don't have to wonder what would happen if we could feminize economic activity and economic relations. There is already plenty of evidence in the work of some pioneering female thinkers whose concern about the society their children will inherit promises to fundamentally change global economics. In fact, most of the financial sector's innovative thinking on socially responsive investing has come from women. Why am I not surprised? Globalization is a mug's game being played in a Man's world. I can imagine a day when compassion counts as much as cash flow. After all, the challenges that confront the business world already demand a holistic perspective. And who is going to be best equipped to face that future?

单选题They didn’t tell me ______ go for their holiday.

单选题______ in 1635, the Boston Latin School is the oldest public school in the United States. A. Founded B. Founding C. To found D. Having founded

单选题They left three hours ago; they ______ there by now.

单选题It's sometimes difficult to______what is said over a loudspeaker.

单选题Speaker A: I can't seem to find a color TV of the new model. Speaker B:_____

单选题{{B}}Passage Four{{/B}} We sometimes think humans are uniquely vulnerable to anxiety, but stress seems to affect the immune defenses of lower animals too. In one experiment, for example, behavioral immunologist (免疫学家) Mark Laudenslager, at the University of Denver, gave mild electric shocks to 24 rats. Half the animals could switch off the current by turning a wheel in their enclosure, while the other half could not. The rats in the two groups were paired so that each time one rat turned the wheel it protected both itself and its helpless Partner from the shock. Laudenslager found that the immune response was depressed below normal in the helpless rats but not in those that could turn off the electricity. What he has demonstrated, he believes, is that lack of control over an event, not the experience itself, is what wakens the immune system. Other researchers agree, Jay Weiss, a psychologist at Duke University School of Medicine, has shown that animals who are allowed to control unpleasant stimuli don't develop sleep disturbances or changes in brain chemistry typical of stressed rats. But if the animals are conditioned to confront with situations they have no control over, they later behave passively even when faced with experiences they can control. Such findings reinforce psychologists' suspicions that the experience or perception of helplessness is one of the most harmful factors in depression. One of the most startling examples of how the mind can alter the immune response was discovered by chance. In 1975 psychologist Robert Ader at the University of Rochester School of Medicine conditioned (使形成条件反射) mice to avoid saccharin (糖精) by simultaneously feeding them the sweetener and injecting them with a drug that while suppressing their immune systems caused stomach upsets. Associating the saccharin with the stomach pains, the mice quickly learned to avoid the sweetener. In order to extinguish this dislike for the sweetener, Ader reexposed the animals to saccharin, this time without the drug, and was astonished to find that those mice that had received the highest amounts of sweetener during their earlier conditioning died. He could only speculate that he had so successfully conditioned the rats that saccharin alone now served to weaken their immune systems enough to kill them.