单选题He forgave his wife although she had once had a ______affair with a poet.

单选题In order to survive now and______ in the future, all the working staff must constantly create new ideas for every aspect of your business.(2002年春季上海交通大学考博试题)

单选题Scientists are______certain that there is a cancer-inhibiting agent in the blood of theshark.(2003年3月中国科学院考博试题)

单选题暂缺

单选题Many Fine Art graduates take ______ professional practice as artists, and this course encourages them to consider their role as artists in the community by providing opportunities for short-term placements outside the faculty.

单选题A comet is distinguished from other bodies in the solar system ______.

单选题I would like to say that a theory is essentially an abstract, symbolic representation of reality.

单选题The ship was ______ in a storm off Jamaica. A. drowned B. immerged C. wrecked D. submitted

单选题Parkinson's disease, first described in the early 1800s by British physician James Parkinson as "shaking palsy," is among the most prevalent neurological disorders. According to the United Nations, at least four million people worldwide have it: in North America, estimates run from 500,000 to one million, with about 50,000 diagnosed every year. These figures are expected to double by 2040 as the world's elderly population grows; indeed, Pakinson's and other neurodegenerative illness common in the elderly (such as Alzheimer's and amyotrophic lateral sclerosis) are on their way to over-taking cancer as a leading cause of death. But the disease is not entirely one of the aged: 50 percent of patients acquire it after age 60; the other half are affected before then. Furthermore, better diagnosis has made experts increasingly aware that the disorder can attack those younger than 40. So far researchers and clinicians have found no way to slow, stop or prevent Parkinson's. Although treatments do exist—including drugs and deep-brain stimulation—these therapies alleviate symptoms, not causes. In recent years, however, several promising developments have occurred. In particular, investigators who study the role proteins play have linked miscreant proteins to genetic underpinnings of the disease. Such findings are feeding optimism that fresh angles of attack can be identified. As its 19th-century name suggests—and as many people know from the educational efforts of prominent Parkinson's sufferers such as Janet Reno, Muhammad All and Michael J. Fox—the disease is characterized by movement disorders. Tremor in the hands, arms and elsewhere, limb rigidity, slowness of movement, and impaired balance and coordination are among the disease's hallmarks. In addition, some patients have trouble walking, talking, sleeping, urinating and performing sexually. These impairments result from neurons dying. Although the victim cells are many and found throughout the brain, those producing the neurotransmitter dopamine in a region called the substantia nigra are particularly hard-hit. These dopaminergic nerve cells are key components of the basal ganglia, a complex circuit deep within the brain that fine-tunes and coordinates movement. Initially the brain can function normally as it loses dopaminergic neurons in the substantia nigra, even though it cannot replace the dead cells. But when half or more of these specialized cells disappear, the brain can no longer cover for them. The deficit then produces the same effect that losing air traffic control does at a major airport. Delays, false starts, cancellations and, ultimately, chaos pervade as parts of the brain involved in motor control—the thalamus, basal ganglia and cerebral cortex—no longer function as an integrated and orchestrated unit.

单选题Pity those who aspire to put the initials PhD after their names. After 16 years of closely supervised education, prospective doctors of philosophy are left more or less alone to write the equivalent of a large book. Most social-science postgraduates have still not completed their theses by the time their grant runs out after three years. They must then get a job and finish in their spare time, which can often take a further three years. By then , most new doctors are sick to death of the narrowly defined subject which has blighted their holidays and ruined their evenings. The Economic and Social Research Council, which gives grants to postgraduate social scientists, wants to get better value for money by cutting short this agony. It would like to see faster completion rates: until recently, only about 25% of PhD candidates were finishing within four years. The ESRC's response has been to stop PhD grants to all institutions where the proportion taking less than four years is below 10% ; in the first year of this policy the national average shot up to 39%. The ESRC feels vindicated in its toughness, and will progressively raise the threshold to 40% in two years. Unless completion rates improve further, this would exclude 55 out of 73 universities and polytechnics-including Oxford University, the London School of Economics and the London Business School. Predictably, howls of protest have come from the universities, who view the blacklisting of whole institutions as arbitrary and negative. They point out that many of the best students go quickly into jobs where they can apply their research skills, but consequently take longer to finis their theses. Polytechnics with as few as two PhD candidates complain that they are penalized by random fluctuations in student performance. The colleges say there is no hard evidence to prove that faster completion rates result from greater efficiency rather than lower standards or less ambitious doctoral topics. The ESRC thinks it might not be a bad thing if PhD students were more modest in their aims. It would prefer to see more systematic teaching of research skills and fewer unrealistic expectations placed on young men and women who are undertaking their first piece of serious research. So in future its grants will be given only where it is convinced that students are being trained as researchers, rather than carrying out purely knowledge-based studies. The ESRC cannot dictate the standard of thesis required by external examiners, or force departments to give graduates more teaching time. The most it can do is to try to persuade universities to change their ways. Recalcitrant professors should note that students want more research training and a less elaborate style of thesis, too.

单选题"The highest merit we ascribe to Moses, Plato, and Milton," says Emerson, "is that they set at nought books and traditions, and spoke not what men thought but what they thought. A man should learn to detect and watch that gleam of light which flashes across his mind from within, more than the luster of the firmament of bards and sages. Yet he dismisses without notice his thought because it is his. In every work of genius we recognize our own rejected thoughts; they come back to us with a certain alienated majesty." It is strange that any one who has recognized the individuality of all works of lasting influence should not also recognize the fact that his own individuality ought to be steadfastly preserved. As Emerson says in continuation, "Great works of art have no more affecting lesson for us than this. They teach us to abide by our spontaneous impressions with goodhumored inflexibility, then most when the whole cry of voices is on the other side. Else tomorrow a stranger will say with masterful good sense precisely what we have thought and felt all the time, and we shall be forced to take with shame our opinion from another." Accepting the opinions of another and the tastes of another is very different from agreement in opinion and taste. Originality is independence, not rebellion. It is sincerity, not antagonism. Whatever you believe to be true and false, that proclaim to be true and false. Whatever you think admirable and beautiful, that should be your model, even if all your friends and all the critics storm at you as a crotchet-monger and an eccentric. Whether the public will feel its truth and beauty at once, or after long years, or never cease to regard it as paradox and ugliness, no man can foresee. Enough for you to know that you have done your best, have been true to yourself, and that the utmost power inherent in your work has been displayed.

单选题I haven"t read that book, but just from looking over the ______, I think it would be worth reading.

单选题China's______cultural heritage should be better protected through increased efforts to preserve endangered art. A. inalienable B. intangible C. intelligible D. indivisible

单选题{{B}}Passage 6{{/B}} Even in fresh water sharks hunt and kill. The Thresher shark, capable of lifting a small boat out of the water, has been sighted a mile inland on the Fowey River in Corn-wall. Killer sharks swim rivers to reach Lake Nicaragua in Central America; they average one human victim each year. Sewage and garbage attract sharks inland. When floods carry garbage to the rivers they provide a rich diet which sometimes stimulates an epidemic of shark attacks. Warm water generally provides shark food, and a rich diet inflames the shark's aggression. In British waters sharks usually swim peacefully between ten and twenty miles off- shore where warm water currents fatten mackerel and pilchards for their food. But the shark is terrifyingly unpredictable. One seaman was severely mauled as far north as Wick in Scotland. Small boats have been attacked in the English Channel, Irish Sea and North Sea. Most of the legends about sharks are founded in ugly fact. Even a relatively small shark--a 200 lb. Zambezi--can sever a man's leg with one bite, Sharks have up to seven rows of teeth and as one front tooth is damaged or lost another moves forward to take its place. The shark never sleeps. Unlike most fish, it has no air bladder, and it must move constantly to avoid sinking. It is a primitive creature, unchanged for sixty million years of evolution. Its skin is without the specialized scales of a fish. Fully grown, it still has five pairs of separate gills like a three-week human embryo. But it is a brilliantly efficient machine. Its skin carries nerve endings which can detect vibrations from fish moving several miles away. Its sense of smell, the function of most of its brain, can detect one p. art in 600,000 of tuna fish juice in water, or the blood of a fish or animal from a quarter of a mile away. It is colour blind, and sees best in deep water, but it can distinguish shapes and patterns of light and shade easily. Once vibrations and smell have placed its prey the shark sees well enough to home in by vision for the last fifty feet. The shark eats almost anything. It will gobble old tin cans and broken bottles as well as fish, animals and humans. Beer bottles, shoes, wrist watches, car number plates, overcoats and other sharks have been found in dead sharks. Medieval records tell of entire human corpses still encased in armour. The United States military advice on repelling sharks is to stay clothed--sharks go for exposed flesh, especially the feet. Smooth swimming at the surface is essential. Frantic splashing will simply attract sharks, and dropping below the surface makes the swimmer an easy target. If the shark gets close, then is the time to kick, thrash and hit out. A direct hit on the snout, gills, or eyes will drive away most sharks. The exception is the Great White shark. It simply kills you.

单选题Childhood memoirs often gain their poignancy through a sense of displacement: each lesson is accompanied by a loss of ______.

单选题Foreign propagandists have a strange misconception of our national character. They believe that we Americans must be hybrid, mongrel, undynamic; and we are called so by the enemies of democracy because, they say, so many races have been fused together in our national life. They believe we are disunited and defenseless because we argue with each other, because we engage in political campaigns, because we recognize the sacred right of the minority to disagree with the majority and to express that disagreement even loudly. It is the very mingling of races, dedicated to common ideals, which creates and recreates our vitality. In every representative American meeting there will be people with names like Jackson and Lincoln and Isaacs and Schultz and Kovack and Sartori and Jones and Smith. These Americans with varied. backgrounds are all immigrants or the descendants of immigrants. All of them are inheritors of the same stalwart tradition of unusual enterprise, of adventurousness, of courage--courage to "pull up stakes and git moving". That has been the great compelling force in our history. Our continent, our hemisphere, has been populated by people who wanted a life better than the life they had previously known. They were willing to undergo all conceivable hardships to achieve the better life. They were animated, just as we are animated today, by this compelling force. It is what makes us Americans.

单选题The passage is mainly to ______.

单选题Alcohol ingestion is said to reduce the tension or feelings of unpleasantness and to replace them with the feeling of euphoria generally observed in most persons after they have consumed one or more drinks. A. escalation B. elation C. delusion D. indifference