研究生类
公务员类
工程类
语言类
金融会计类
计算机类
医学类
研究生类
专业技术资格
职业技能资格
学历类
党建思政类
博士研究生考试
公共课
专业课
全国联考
同等学历申硕考试
博士研究生考试
考博英语
考博英语
单选题
进入题库练习
单选题When, in the age of automation, man searches for a worker to do the tedious, unpleasant jobs that are impossible to mechanize, he may very profitably consider the ape. If we tackled the problem of breeding for brains with as much as enthusiasm as we devote to breeding dogs of surrealistic shapes, we could eventually produce assorted models of useful primates, ranging in size from the gorilla down to the baboon, each adapted to a specific kind of work. It is not putting too much strain on the imagination to assume that geneticists could produce a super-ape, able to understand some scores of words, and capable of being trained for such jobs as picking fruit, cleaning up the litter in parks, shining shoes, collecting garbage, doing household chores, and even baby-sitting(though I have known some babies I would not care to trust with a valuable ape). Apes could do many jobs, such as cleaning streets and the more repetitive types of agricultural work, without supervision, though they might need protection from those exceptional specimens of Homo sapiens who think it amusing to tease or bully anything they consider lower on the evolutionary ladder. For other tasks, such as delivering papers and laboring on the docks, our man-ape would have to work under human overseers; and, incidentally, I would love to see the finale of the twenty-first century version of on the Waterfront in which the honest but hairy hero will drum on his chest after-literally taking the wicked labor leader apart. Once a supply of nonhuman workers becomes available, a whole range of low IQ jobs could be thankfully relinquished by mankind, to its great mental and physical advantage. What is more, one of the problems which have plagued so many fictional Utopias would be avoided: There would be none of the degradingly subhuman Epsilons of Huxley's Brave New World to act as a permanent reproach to society, for there is a profound moral difference between breeding sub-men and super-apes, though the end products are much the same. The first would introduce a form of slavery; the second would be a biological triumph which could benefit both men and animals.
进入题库练习
单选题In his view, though Hong Kong has no direct cultural identity, local art is thriving by "being ______," being open to all kinds of art.
进入题库练习
单选题Friction between America"s military and its civilian overseers is nothing new. America"s 220-year experiment in civilian control of the military is a recipe for friction. The nation"s history has seen a series of shifts in decision-making power among the White House, the civilian secretaries and the uniformed elite (精英). However, what may seem on the outside an unstable and special system of power sharing has, without a doubt, been a key to two centuries of military success. In the infighting dates to the revolution, George Washington waged a continual struggle not just for money, but to control the actual battle plan. The framers of the Constitution sought to clarify things by making the president the "commander in chief". Not since Washington wore his uniform and led the troops across the Alleghenies to quell(镇压) the Whiskey Rebellion has a sitting president taken command in the riel& Yet the absolute authority of the president ensures his direct command. The president was boss, and everyone in uniform knew it. In the Civil War, Abraham Lincoln dealt directly with his generals, and Secretary of War Edwin M. Stanton handled administrative details. Lincoln, inexperienced in military matters, initially deferred (顺从) to his generals. But when their caution proved disastrous, he issued his General War order No. 1 -- explicitly commanding a general advance of all Union forces. Some generals, George B. McClellan in particular, bridled at his hands-on direction. But in constitutional terms, Lincoln was in the right. His most important decision was to put Ulysses S. Grant in charge of the Union Army in 1864. Left to its own timetable, the military establishment would never have touched Grant. The relationship between the president and his general provides a textbook lesson in civilian control and power sharing. Grant was a general who would take the fight to the enemy, and not second-guess the president"s political decisions. Unlike McClellan, for example, Grant cooperated wholeheartedly in recruiting black soldiers. For his part, Lincoln did not meddle in operations and did not visit the headquarters in the field unless invited. The balance set up by Grant and Lincoln stayed more or less in place through World War I. Not until World War II did the pendulum finally swing back toward the White House. Franklin Roosevelt, who had been assistant Navy secretary during World War I, was as well prepared to be commander in chief as any wartime president since George Washington.
进入题库练习
单选题 While still catching-up to men in some spheres of modern life, women appear to be way ahead in at least one undesirable category. Women are particularly susceptible to developing depression and anxiety disorders in response to stress compared to men, according to Dr. Yehuda, chief psychiatrist at New York's Veteran's Administration Hospital. Studies of both animals and humans have shown that sex hormones somehow affects the stress response, causing females under stress to produce more of the trigger chemicals than do males under the same conditions. In several of the studies, when stressed-out female rats had their ovaries (the female reproductive organs) removed, their chemical responses became equal to those of the males. Adding to a woman's increased dose of stress chemicals are her increased "opportunities" for stress. "It's not necessarily that women don't cope as well. It's just that they have so much more to cope with," says Dr. Yehuda. "Their capacity for tolerating stress may even be greater than men's," she observes, "it's just that they're dealing with so many more things that they become worn out from it more visibly and sooner." Dr. Yehuda notes another difference between the sexes. "I think that the kinds of things that women are exposed to tend to be in more of a chronic or repeated nature. Men go to war and are exposed to combat stress. Men are exposed to more acts of random physical violence. The kinds of interpersonal violence that women are exposed to tend to be in domestic situations, by, unfortunately, parents or other family numbers, and they tend not to be one-shot deals. The wear-and-tear that comes from these longer relationships can be quite devastating." Adeline Alvarez married at 18 and gave birth to a son, but wad determined to finish college. "I struggled a lot to get the college degree. I was living in so much frustration that that was my escape, to go to school, and get ahead and do better." Later, her marriage ended and she became a single mother. "It's the hardest thing to take care of a teenager, have a job, pay the rent, pay the car payment, and pay the debt. l lived from paycheck to paycheck." Not everyone experiences the kinds of severe chronic stresses Alvarez describes. But most women today are coping with a lot of obligations, with few breaks, and feeling the strain. Alvarez's experience demonstrates the importance of finding ways to diffuse stress before it threatens your health and your ability to function.
进入题库练习
单选题{{B}}Passage Five{{/B}} Most people who develop Lyme disease, a tick-borne infection that's endemic in parts of the Northeast and Midwest, are easily cured by taking an antibiotic like doxycycline for a couple of weeks. But for years a debate has raged over what to do about patients whose symptoms (fatigue, mental confusion, joint pain) never seem to clear up. One small but vocal group of doctors and patient advocates believes that Lyme's corkscrew-shaped spirochetes have tunneled deep into their victims' bodies and can be eradicated only with intensive antibiotic treatment over many months. Another group believes, just as adamantly, that the bacteria are long gone, making further treatment with powerful antibiotics—which can lead to potentially fatal infections or blood clots—positively dangerous. Now comes word of two studies in the New England Journal of Medicine that show that long-term antibiotic treatment is no better than a placebo for folks with chronic Lyme disease. Originally scheduled for publication in July, the research is part of a group of findings made public last week -just in time for the peak Lyme months of June and July. If confirmed by another major study that's looking at chronic Lyme and antibiotics from a slightly different perspective, the results would seem to settle the question once and for all. Researchers from Boston, New Haven, Conn., and Valhalla, N. Y., followed 129 patients who had previously been treated for well-documented eases of Lyme disease. Sixty-four were given antibiotics directly into their veins for a month, followed by two months of oral antibiotics. The others received dummy medications. A third of the chronic Lyme patients got better while taking the antibiotics. But so did a third of those on the placebo. Indeed, the results were so similar that a monitoring board decided to cut the trials short rather than add more subjects to the test groups. Unfortunately, the debate over chronic Lyme has become so heated that no one expects the controversy to go away. But both sides may take comfort in the other findings that were released by the New England Journal last week. After studying 482 subjects bitten by deer ticks in a part of New York with a lot of Lyme disease, researchers concluded that a singly 200-rug dose of doxycycline dramatically cut the risk of contracting the disease. That good news is tempered somewhat by the fact that 80% of patients who develop the infection don't remember ever being bitten by a tick. (The bugs inject an anesthetic into the skin to mask the pain and in their nymph stage are so small—about the size of a poppy seed--that they are easily overlooked.) There's still plenty you can do to protect yourself in a Lyme-infested neighborhood: tuck your pants in your socks, spray DEET on your clothing, check yourself and your kids for ticks. And if you develop a spreading red rash—particularly if it's accompanied by joint pain, chills or confusion—make sure you see a doctor right away. The tick, as always, is to be vigilant without overreacting.
进入题库练习
单选题The doctors have tried ______ to save his life.
进入题库练习
单选题Which of the following, according to the passage, contribute(s) to alcoholism? Ⅰ. the need to reduce tensions and anxieties Ⅱ. the anxieties resulting from guilt feelings about previous drinking bouts Ⅲ. punishment for alcoholic behavior
进入题库练习
单选题The civilian employee of the U.S. military in Korea, McKinley was arrested and ______.
进入题库练习
单选题Which of the following can be chosen as the best title of this passage?
进入题库练习
单选题{{B}}Text 3{{/B}} People who begin to go deaf in adult life have different problems from those who are born deaf. They have to learn different ways of behaving and different ways of communication—perhaps at a time when learning is not all that easy. A heating aid is not a complete solution to the problem. The sound perceived by the deaf person through a hearing aid is distorted and appears to have more background noise than is heard by someone with normal hearing. Deafened people have to lip-read as well. Lipreading is difficult, demands intense concentration, and an uninterrupted direct view of the speaker's face. No other activities can take place at the same time: the lipreadar has to stop eating, stop everything in order to concentrate on hearing. It is not a question of stupidity or bad temper—as it sometimes appears to be—but a question of being very easy to misunderstand when tile sound is distorted. Remember what it's like trying to communicate on a very bad telephone line. Frustrating, isn't it? The deaf have to face that all the time. A useful way of looking at the problem is to see the deaf person as a foreigner—to treat them as if you were in a foreign country. You would speak more clearly, slowly and raise your voice slightly. And you'd use gestures to make your meaning clear, as well as have no hesitation in using pencil and paper to be absolutely certain. You can de all those things with the deaf—as well as making sure you don't obscure your mouth with your hand, a pipe or a cigarette. Another point quite often overlooked is that a hearing aid may be quite efficient and useful in a quiet, carpeted room—but try it in the street during rush hour, in a noisy ear, in a railway station ticket office, a cinema or a concert hall and you've got a really difficult problem to distinguish speech. So don't suggest to or encourage deaf people to go to functions which are going to make their disability appear worse—and increase their sense of failure. Careful selection of cinemas with good sound systems is important and you should experiment to find out where the best seats are for hearing. Fitting adaptors for radio and television, observing which 15lends are easier to understand, and making sure that people talking are well-lit are all useful and positive activities.
进入题库练习
单选题Statins are a class of drugs that work to decrease the level of cholesterol in the blood. They are able to perform this function by effectively blocking the cholesterol — producing enzyme in the liver. In recent years, statins have increased in utility and popularity. Although a certain amount of cholesterol is imperative for the human body to function, an elevated level can cause a precarious situation in the body. CL Cholesterol affixes itself to arteries, lining them and inhibiting blood flow. Since less blood can travel through those encumbered arteries, the blood flow to the heart is adversely affected. Scientists have found that the walls of arteries in the body can become inflamed from this plaque buildup. In many instances, the end result of this decreased blood supply and inflammation is a heart attack — sometimes a fatal one. In other cases the blood supply to the brain is compromised by the plaque buildup, often causing a stroke. Decreased blood flow to the legs can cause leg pains or cramps. In short, arterial plaque buildup is never a healthy situation. Statins diminish the amount of cholesterol generated by the body. Although the drugs are not always able to reduce the amount of plaque that may already be clogging arteries, they can slow the production of new plaque. The drugs are also able to stabilize the plaques that are already present and make them less likely to cause problems in the body. Lowered cholesterol does not guarantee that a heart attack won't occur, but statin use will lower the risk for most patients. Not everyone who has a heart attack has high cholesterol levels, but most do have plaque formations on their arteries. It should be noted that the plaque is not always formed by high levels of cholesterol in the blood. Statins are generally prescribed by doctors for people with elevated cholesterol levels. As the mean weight of the American population has risen, so has the number of individuals with high cholesterol. Millions of men and women in this country are prescribed statins in an effort to decrease the amount of cholesterol in their blood. Remarkably, these effects can be seen in as little as two weeks after beginning a statin regime.
进入题库练习
单选题Stanley was______by what I had said and when I realized this, 1 apologized to him for being so tactless.(2011年南京大学考博试题)
进入题库练习
单选题It can be concluded from the last paragraph that ______.
进入题库练习
单选题His arm was ______ from the shark"s mouth and reattached, but the boy, who nearly died, remained in a delicate condition.
进入题库练习
单选题The media's ______ in the president's private life switched the attention away from the real issues. A. capacity B. concentration C. focus D. involvement
进入题库练习
单选题Water is the giver and, at the same time, the taker of life. It covers most of the surface of the planet we live on and features large in the development of the human race. On present predictions, it is an cement that is set to assume even greater significance. Throughout history, water has had a huge impact on our lives. Humankind has always had a rather ambiguous relationship with water, on the one hand receiving enormous benefit from it, not just as a drinking source, but as a provider of food and a means whereby to travel and to trade. But forced to live close to water in order to survive and to develop, the relationship has not always been peaceful or beneficial. In fact, it has been quite the contrary. What has essentially been a necessity for survival was turned out in many instances to have a very destructive and life-threatening side. Through the ages, great floods alternated with long periods of drought have assaulted people and their environment, hampering their fragile fight for survival. The dramatic changes to the environment that are now a feature of our daily news are not exactly new: fields that were once lush and fertile are now barren; lakes and rivers that were once teeming with life are now long gone; savannah has been turned to desert. What perhaps is new is our native wonder when faced with the forces of nature. Today, we are more aware of climatic changes around the world. Floods in far-flung places are instant news for the whole world. Perhaps these events make us feel better as we face the destruction of our own property by floods and other natural disasters. In 2002, many parts of Europe suffered severe flood damage running into billions of euros. Properties across the continent collapsed into the sea as waves pounded the coastline wreaking havoc with sea defenses. But it was not just the seas. Rivers swollen by heavy rains and by the effects of deforestation carried large volumes of water that wrecked many communities. Building stronger and more sophisticated fiver defenses against flooding is the expensive short-term answer. There are simpler ways. Planting trees in highland areas, not just in Europe but in places like the Ganges Delta, is a cheaper and more attractive solution. Progress is already being made in convincing countries that the emission of carbon dioxide and other greenhouse gases is causing considerable damage to the environment. But more effort is needed in this direction. And the future? If we are to believe the forecasts, it is predicted that two thirds of the world population will be without fresh water by 2025. But for a growing number of regions of the world the future is already with us. While some areas are devastated by flooding, scarcity of water in many other places is causing conflict. The state of Texas in the United States of America is suffering a shortage of water with the Rio Grande failing to reach the Gulf of Mexico for the first time in 50 years in the spring of 2002, pitting region against region as they vie for water sources. With many parts of the globe running dry through drought and increased water consumption, there is now talk of water being the new oil. Other doom-laden estimates suggest that, while tropical areas will become drier and uninhabitable, coastal regions and some low-lying islands will in all probability be submerged by the sea as the polar ice caps melt. Popular exotic destinations now visited by countless tourists will become no-go areas. Today"s holiday hotspots of southern Europe and elsewhere will literally become hotspots—too hot to live in or visit, with the current erratic behavior of the weather, it is difficult not to subscribe to such despair. Some might say that this despondency is ill-founded, but we have had ample proof that there is something not quite fight with the climate. Many parts of the world have experienced devastating flooding. As the seasons revolve, the focus of the destruction moves from one continent to another. The impact on the environment is alarming and the cost to life depressing. It is a picture to which we will need to become accustomed.
进入题库练习
单选题 After '9.11', the Olympic Games severely taxed the security services of the host country.
进入题库练习
单选题Just over a year ago, I foolishly locked up my bicycle outside my office, but forgot to remove the pannier. When I returned the pannier had been stolen. Inside it were about ten of the little red notebooks I take everywhere for jotting down ideas for articles, short stories, TV shows and the like. When I lost my notebooks, I was devastated; all the ideas I"d had over the past two years were contained within their pages. 1 could remember only a few of them, but had the impression that those I couldn"t recall were truly brilliant. Those little books were crammed with the plots of award-winning novels and scripts for radio comedy shows that were only two-thirds as bad as the ones on at the moment. That"s not all, though. In my reminiscence, my lost notebooks contained sketches for many innovative and incredible machines. In one book there was a design for a device that could turn sea water into apple cider; in another, plan for an automatic dog; in a third, sketches for a pair of waterproof shoes with television screens built into the toes. Now all of these plans are lost to humanity. I found my notebooks again. It turns out they weren"t in the bike pannier at all, but in a bag in my spare room, where I found six months after supposedly losing them. And when I flipped through their pages, ready to run to the patent office in the morning, I discovered they were completely full of rubbish. Discovering the notebooks really shook me up. I had firmly come to believe they were brimming with brilliant, inventive stuff—and yet clearly they weren"t. I had deluded myself. After surveying my nonsense, I found that this halo effect always attaches itself to things that seem irretrievably lost. Don"t we all have a sneaking feeling that the weather was sunnier, TV shows funnier and cake-shop buns bunnier in the not-very-distant pasty. All this would not matter much except that it is a powerful element in reactionary thought, this belief in a better yesterday. After all, racism often stems from a delusion that things have deteriorated since "they" came. What a boon to society it would be if people could visit the past and see that it wasn"t the paradise they imagine but simply the present with different hats. Sadly, time travel is impossible. Until now, that is. Because I"ve suddenly remembered I left a leather jacket in an Indonesian restaurant a couples of years ago, and I"m absolutely certain that in the inside pocket there was a sketch I"d made.
进入题库练习
单选题Years ago, a group of brilliant young men at the University of Wisconsin seemed to have amazing creative literary talent. They were 56 poets, novelists and essayists. They were extraordinary, in their ability, to put the English language 57 , These 58 young men met regularly to read and critique each other's work. And critique it they did! These men were merciless 59 one another. They 60 the most minute literary expression 61 a hundred pieces. They were heartless, tough, even mean in their criticism. The sessions became 62 arenas of literary criticism that the members of this exclusive club called them- selves "Stranglers." 63 , the women of literary talent in the university, were determined to start a club of 64 , one comparable to the Stranglers. They called themselves "Wranglers." They, too, read their works 65 . But there was one great difference. The criticism was much softer, more positive, more encouraging 66 there was 67 criticism at all. Every effort, even the most feeble one, was encouraged. Twenty years later, when an alumnus(男校友)of the university 68 an exhaustive study of his classmates' careers, he noticed a vast difference in the literary 69 of the Stranglers 70 the Wranglers. Of all the bright young men in the Stranglers, not one had made a significant literary accomplishment 71 . From the Wranglers had come six or more successful writers, some of national renown such as Marjorie Kinnan Rawlings. 72 wrote The Yearling. Talent between the two? Probably the same. Level of education? 73 difference. But the Stranglers strangled, while the Wranglers 74 to give each other a life. The Stranglers promoted an atmosphere of contention and self-doubt. The Wranglers 75 the best, not the worst.
进入题库练习