单选题Most people are right-handed and children usually have the same handedness as their parents. This suggests that genes are at work. But identical twins have identical genes, so genes cannot be the whole story. Cultural attitudes seem to have played an important part in the development of hand preferences. In the past, left-handed have suffered anything from teasing to flogging. Even today in some countries en forced right-handedness, particularly for writing and eating, is still common. To explain the observed patterns of handedness, researchers have devised what is known as a' geneculture coevolution' model. The initial assumption of the model-drawn from observation of non-human primates and other mammals such as mice-is that early on in human evolution, the genetic make-up of individuals inclined them to prefer one hand or the other, but that the population was equally divided between right and left-handed people. Over time, according to the model, the interaction of genes and culture has produced a state where everyone has identical genes for handedness. This would happen if, for whatever reason, right-handers were more likely to survive and reproduce. The idea may not be that far fetched. Many biologists believe that handedness is related to brain structure, say, for example, early right-handers may have been better at language. The model predicts that today everyone has genes which confer a basic predisposition of 78% to be right-handed. How children actually turn out, however, can be influenced by whether their parents are dextral or sinistral. For example, children may mimic their parents. Or parents may influence the handedness of their children in the way that they hand them toys or food. The researchers reckon that a child with two right-handed parents has a 91% probability of being right-handed; a child with two left-handed parents has a probability of only 63% of being right-handed. But parental influence does not account for everything. Random events during a child's development can also have a small effect on handedness. Even if identical twins have parents who are both dextral, factors such as their position in the womb may result in the twins not preferring the same hands. The model seems plausible. It accurately predicts the results of 13 studies of the handedness of twins as well as the proportion of left-handers found in the population at large (roughly 12%, a figure that seems to be quite stable). Asymmetries in early tools, and in the way in which prey were clubbed, suggest that hominids as early as the Australopithecines may have preferred their right hands. Whatever the origin of this dexterous preference, though, left-handers remain at large. Some people are just sinister.

单选题The author specifically mentions all of the following as difficulties that particularly affect women who are theoreticians of feminist literary criticism EXCEPT the

单选题No one could tell us anything about the______strangers.

单选题For a person with reading habits，a printed page contains not only words ______ ideas， thoughts and feelings．A．yetB．andC．orD．but

单选题To please no one A I will prescribe a deadly drug, B nor give advice which may cause his death. C Nor will I give D a woman a pessary to procure abortion. But I will preserve the purity of my life and my art.

单选题I never trusted him because I always thought of him as such a ______ character. (2010年厦门大学考博试题)

单选题To the child, the genius with imagination, or the wholly untraveled, the approach to a great city for the first time is a wonderful thing. Particularly if it be evening-that mystic period between the glare and gloom of the world when life is changing from one sphere or condition to another. Ah, the promise of the night. What does it not hold for the weary! What old illusion of hope is not here forever repeated ! Says the soul of the toiler to itself. " I shall soon be free. I shall be in the ways and the hosts of the merry. The streets, the lamps, the lighted chamber set for dining, are for me. The theatre , the halls, the parties, the ways of rest and the paths of song—these are mine in the night. "The following passage is taken from the novel entitled______.

单选题Men often wait longer to get help for medical problems than women, and ______, women live about six years longer than men on an average.

单选题{{B}}Passage Three{{/B}} Many strange new means of transport have been developed in our century, the strangest of them being perhaps the hovercraft. In 1953, a former electronics engineer in his fifties, Christopher Cockerell, who had turned to boat-building on the Norfolk Broads, suggested an idea on which be had been working for many years to the British government and industrial circles. It was the idea of supporting a craft on a "pad", or cushion, of low-pressure air, ringed with a curtain of higher pressure air. Ever since, people have had difficulty in deciding whether the craft should be ranged among ships, planes, or land vehicles—for it is something in between a boat and an aircraft. As a ship builder, Cockerell was trying to find a solution to the problem of the wave resistance which wastes a good deal of a surface's power and limits its speed. His answer was to lift the vessel out of the water by making it ride on a cushion of air, no more than one or two feet thick. This is done by a great number of ring-shaped air jets on the bottom of the craft. It "flies", therefore, but it cannot fly higher—its action depends on the surface, water or ground, over which it rides.

单选题I was so preoccupied with the book that I was______of the surroundings.

单选题When Jane was in 7 th grade, she found that there was a lot of trouble in reading. Her mother used to sit by her side, and explain each paragraph of each school reading assignment to her because she didn"t understand what she was reading. In class, Jane tried to hide the fact that she couldn"t read. Her teachers gave them the last ten minutes of class to start their reading homework, and she would sit there for the last ten minutes of class staring at the page, pretending she was reading it. She had to wait until she got home so her mother could explain it to her. (82) By 8th grade she started comprehension a little on her own, but She still read very slowly at that time. She went out and took a course on speed reading. Then she developed her own way to read faster with better results. She started practicing these techniques every day, and as she started to read faster, her comprehension increased. So she was able to read faster with better comprehension. She found that when you read slowly, word by word, you get lost in the words, lose the bigger picture, and your comprehension drops. When you read faster, your comprehension goes up because, instead of getting lost in the words, you can get the general idea.

单选题{{B}}Text 3{{/B}} President Bush takes to the bully pulpit to deliver a stern lecture to America's business elite. The Justice Dept. stuns the accounting profession by filing a criminal indictment of Arthur Andersen LLP for destroying documents related to its audits of Enron Corp. On Capitol Hill, some congressional panels push on with biased hearings on Enron's collapse and, now, another busted New Economy star, telecom's Global Crossing. Lawmakers sign on to new bills aimed at tightening oversight of everything from pensions and accounting to executive pay. To any spectators, it would be easy to conclude that the winds of change are sweeping Corporate America, led by George W. Bush, who ran as "a reformer with result." But far from deconstructing the corporate world brick by brick into something cleaner, sparer, and stronger, Bush aides and many legislators are preparing modest legislative and administrative reforms. Instead of an overhaul, Bush's team is counting on its enforcers, Justice and a newly empowered Securities & Exchange Commission, to make examples of the most egregious offenders. The idea is that business will quickly get the message and clean up its own act. Why won't the {{U}}outraged rhetoric{{/U}} result in more changes? For starters, the Bush Administration warns that any rush to legislate corporate behavior could produce a raft of flawed hills that raise costs without halting abuses. Business has striven to drive the point home with an intense lobbying blitz that has convinced many lawmakers that over-regulation could startle the stock market and perhaps endanger the nascent economic recovery. All this sets the stage for Washington to get busy with predictably modest results. A surge of caution is sweeping would-be reformers on the Hill. "They know they don't want to make a big mistake," says Jerry J. Jasinowski, president of the National Association of Manufacturers. That go-slow approach suits the White House. Aides say the President, while personally disgusted by Enron's sellout of its pensioners, is reluctant to embrace new sanctions that frustrate even law-abiding corporations and create a litigation bonanza for trial lawyers. Instead, the White House will push for narrowly targeted action, most of it carried out by the SEC, the Treasury Dept., and the Labor Dept. The right outcome, Treasury Secretary Paul H.O'Neill said on Mar. 15, "depends on the Congress not legislating things that are over the top." To O'Neill and Bush, that means enforcing current laws before passing too many new ones. Nowhere is that stance clearer than in the Andersen indictment. So the Bush Administration left the decision to Justice DePt. prosecutors rather than White House political operatives or their reformist fellows at the SEC.

单选题Tigers and bears are very dangerous. That's ______ they have to stay in cages in the zoo. A. why B. where C. how D. what

单选题Metonymy involves using the familiar to stand for the unfamiliar.（对外经贸2005研)

单选题 Astronaut Jim Voss has enjoyed many memorable moments in his career, including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound(只在地球上的)experience in the summer of 1980 when he participated in the NASA-ASEE Summer Faculty Fellowship Program. Voss, then a science teacher at West Point was assigned to the Marshall Space Flight Center's propulsion(推进)lab in Alabama to analyze why a hydraulic fuel pump seal on the space shuttle was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them. "I worked abit with NASA engineers," says Voss, "but I did it mostly by analysis. I used a handheld calculator, not a computer, to do a thermodynamic(热力学的)analysis." At the end of the summer, he, like the other NASA-ASEE fellows working at Marshall summarized his findings in a formal presentation and detailed paper. It was a valuable moment for Voss because the ASEE program gave him added understanding of NASA, deepened his desire to fly in space, and intensified his application for astronaut status. It was not an easy process. Voss was actually passed over when he first applied for the astronaut program in 1987. Since then he has participated in three space mission. The 50-year-old Army officer, who lives in Houston, is now in training for a four-month mission as a crew member on the International Space Station starting in July 2000. Voss says the ASEE program is wonderful for all involved. "It brings in people from the academic world and gives NASA a special property for a particular period of time. It brings some fresh eyes and fresh ideas to NASA, and establishes a link with colleges and universities," Voss explains. "There is an exchange of information and an exchange of perspectives that is very important." For the academic side, Voss says, the ASEE program also "brings institutions of higher learning more insight into new technology. We give them an opportunity to work on real-world problems and take it back to the classroom."

单选题They went away for Ua fortnight/U on holiday.

单选题"With malice toward none, with charity for all. "

单选题A hush fell over the guests who had ______ for the wedding celebration.

单选题Associated with the issue of enabling older people to be active participants in a country"s development is the need for lifelong learning programs to ______ members of the ageing population to find employment.

单选题Surrendering to the fact that life isn't fair will ______.