单选题What is the attitude of the Department of Education towards affirmative action?

单选题I can follow his career up to 1958, but quite abruptly I lose______of him.(2006年财政部财政研究所考博试题)

单选题Technically, any substance other than food that alters our bodily or mental functioning is a drug. Many people mistakenly believe the term drug refers only to some sort of medicine or an illegal chemical taken by drug addicts. They don"t realize that familiar substances such as alcohol and tobacco are also drugs. This is why the more neutral term substance is now used by many physicians and psychologists. The phrase substance abuse is often used instead of drug abuse to make clear that substances such as alcohol and tobacco can be just as harmfully misused as heroin and cocaine. We live in a society in which the medicinal and social use of substances (drugs) is pervasive: an aspirin to quiet a headache, some wine to be sociable, coffee to get going in the morning, a cigarette for the nerves. When do these socially acceptable and apparently constructive uses of a substance become misuses? First of all, most substances taken in excess will produce negative effects such as poisoning or intense perceptual distortions. Repeated use of a substance can also lead to physical addiction or substance dependence. Dependence is marked first by an increased tolerance, with more and more of the substance required to produce the desired effect, and then by the appearance of unpleasant withdrawal symptoms when the substance is discontinued. Drugs (substances) that affect the central nervous system and alter perception, mood, and behavior are known as psychoactive substances. Psychoactive substances are commonly grouped according to whether they are stimulants, depressants, or hallucinogens. Stimulants initially speed up or activate the central nervous system, whereas depressants slow it down. Hallucinogens have their primary effect on perception, distorting and altering it in a variety of ways including producing hallucinations. These are the substances often called psychedelic (from the Greek word meaning mind-manifestation) because they seemed to radically alter one"s state of consciousness.

单选题But, in our enthusiasm to discover our heritage, we are ruining the very scenery we go to enjoy, damaging natural habitats, ______ down footpaths, disturbing wildlife, polluting the air and dropping litter.

单选题Facing the danger, they were quite______themselves. A. in case of B. in name of C. in possession of D. in charge of

单选题From the stories which exemplify Roosevelt' s affection for his family members, we can infer that ______.

单选题Her remarkable success as a rock star is partly due to her ability to ______ the media. A. mandate B. meditate C. manifest D. manipulate

单选题Recently some ______ incidents involving mistreatment of new immigrants and ethnic groups have occurred in some European countries. A. vile B. steady C. dreary D. dissimilar

单选题The problem of where we will raise the funds for the scheme has not yet been ______. A. accessed B. addressed C. dealt D. expressed

单选题 Coronary heart attacks occur more commonly in those with high blood pressure, in the obese, in the cigarette smokers, and in those ______ to prolonged emotional and mental strain.

单选题At some time around 2300BC, give or take a century or two, a large number of the major civilizations of the world collapsed, in Mesopotamia, Egypt, Israel, Anatolia, and Greece, as well as in Afghanistan and China. All of them the first urban civilizations fell into rain at more or less the same time. A thousand years later, around 1200BC, many of the civilizations of the same regions again collapsed at about the same time. The reasons for these widespread and apparently simultaneous disasters which coincided with changes to cultures and societies elsewhere, such as in Britain, have long been a fascinating mystery. Traditional explanations included warfare, famine, and more recently systems collapse, but the apparent absence of direct archaeological or written evidence for causes, as opposed to effects, has led many archaeologists and historians into a resigned assumption that no definite explanation can be found. Over the past 15 years, however, a new type of 'natural disaster' has been proffered which is beginning to be regarded by many scholars as the most probable single explanation for widespread and simultaneous cultural collapse. The new theory has been advanced largely by astronomers and remains largely unknown by archaeologists (notable exceptions include Professor Baillie of Belfast and Dr. Euan Mackie in Glasgow). The theory postulates that the disasters were caused by the impact of comets or other types of cosmic debris on the Earth. French archaeologist Chude Schaeffer, in 1948, published his analysis and compared the destruction layers of more than 40 archaeological sites. He was the first scholar to detect that all of the sites had been totally destroyed several times in the Early, Middle and Late Bronze Age, apparently simultaneously. Since the damage did not show signs of military or other human involvement, and, in any case, was too excessive, he argued that repeated seismic activity might have been responsible. Schaeffer was not taken seriously in 1948, but since then natural scientists have found widespread and unambiguous evidence for abrupt climate change, sudden sea level changes, catastrophic inundations, and seismic activity at several periods since the last Ice Age, particularly around 2300BC. Areas such as the Sahara, which were once farmed, became deserts. Tree rings show disastrous conditions at 2350BC. In Mesopotamia the land appears to have been inundated, devastated, or totally burned. Scholars who, following Schaeffer, favor earthquakes as the principal cause of civilization collapse, argue that the world can expect earthquakes every 1000 ～2000 years, leading to abandonment of sites; while scholars who prefer climate change as the principal cause argue that severe droughts caused agriculture to fail and that .societies inexorably fell apart as a result. The question remained what caused the climate change or the earthquakes. By the late 1970's British astronomers Clube and Napier of Oxford University had begun to investigate cometary impact as the ultimate cause. In 1980, the Nobel prize-winning chemist Luis Alvarez and his colleagues published their paper arguing that a cosmic impact had caused the extinction of the dinosaurs. He showed that large amounts of iridium found in geological layers from the time of the dinosaurs had a cosmic origin. Alvarez's paper stimulated further research by Clube and Napier, Professor Mark Bailey, Duncan Steel and Sir Fred Hoyle. All now support the theory of cometary impact and what is now known as the British School of Coherent Catastrophism.

单选题In the Chinese household, grandparents and other relatives play ______ roles in raising children.

单选题Every modern government, liberal or otherwise, has a specific position in the field of ideas; its stability is {{U}}vulnerable{{/U}} to critics in proportion to their ability and persuasiveness.

单选题In a divorce, the mother usually is granted ______of her children. A.support B.retention C.perseverance D.custody

单选题The whole program is well designed, but some details need further ______ by some experts. A. proofing B. modifying C. demonstrating D. polishing

单选题The computer can ______ stored information in a matter of minutes.

单选题A person' s psychological______ has much to do with his or her happiness in life.

单选题A series of border incidents inevitably led the two countries to war. A. distinctly B. unavoidably C. regularly D. actually

单选题Walking through my train yesterday, staggering from my seat to the buffet and back, I counted five people reading Harry Potter novels. Not children- these were real grown-ups reading children's books, Maybe that would have been understandable. If these people had jumped whole-heartedly into a second childhood it would have made more sense. But they were card-carrying grown-ups with laptops and spreadsheets returning from sales meetings and seminars. Yet they chose to read a children's book. I don't imagine you'll find this headcount exceptional. You can no longer get on the London Tube and not see a Harry Potter book. Nor is it just the film; these throwback readers were out there in droves long before the movie campaign opened. So who are these adult readers who have made J.K. Rowling the second-biggest female earner in Britain (after Madonna)? As I have tramped along streets knee-deep in Harry Potter paperbacks, I've mentally slotted them into three groups. First come the Never-Readers, whom Harry has enticed into opening a book. Is this a bad thing? Probably not. Writing has many advantages over film, but it can never compete with its magnetic punch. If these books can re-establish the novel as a thrilling experience for some people, then this can only be for the better. If it takes obsession-level hype to lure them into a bookshop. that's fine by me. But will they go on to read anything else? Again, we can only hope. The second group are the Occasional Readers. These people claim that tiredness, work and children allow them to read only a few books a year. Yet now--to be part of the crowd, to say they've read it- they put Harry Potter on their oh-so-select reading list. It's infuriating, and maddening. Yes, I'm a writer myself, currently writing difficult, unreadable, hopefully unsettling novels, but there are so many other good books out there, so much rewarding, enlightening, enlarging works of fiction for adults; and yet these sad cases are swept along by the hype, the faddism, into reading a children's book. The third group are the Regular Readers, for whom Harry is sandwiched between McEwan (英国当代作家) and Balzac, Roth (德国现代诗人) and Dickens. This is the real baffler--what on earth do they get out of reading it? Why bother? But if they call rattle through it in a week just to say they've been there- like going to Longleat (朗利特山庄，英国名胜)or the Eiffel Tower--the worst they're doing is encouraging others.