单选题In Africa HIV and AIDS continue to ______ the population; nearly 60 percent of those infected are women. A. alleviate B. boost C. capture D. ravage

单选题I tried very hard to persuade him to join our groups but I met with flat______.(2004年湖北省考博试题)

单选题The milk boiled over and there was a(n)______ smell of burning.

单选题The patient is not in good condition, so do not ______ your visit.

单选题What's the purpose of this passage?

单选题In recent years many countries of the world have been faced with the problem of how to make their workers more productive. Some experts claim the answer is to make jobs more varied. But do more varied jobs lead to greater productivity? There is evidence to suggest that while variety certainly makes the workers' life more enjoyable, it does not actually make them work harder. As far as increasing productivity is concerned, then variety is not an important factor. Other experts feel that giving the workers freedom to do their jobs in their own way is important and there is no doubt that this is true. The problem is that this kind of freedom cannot easily be given in the modern factory with its complicated machinery which must be used in a fixed way. Thus while freedom of choice may be important, there is usually very little that can be done to create it. Another important consideration is how much each worker contributes to the product he is making. In most factories bosses are now experimenting with having many small production lines rather than one large one, so that each worker contributes more to the production of the cars on his line. It would seem that not only is degree of worker contribution an important factor, but it is also one we can do something about. To what extent does more money lead to greater productivity? The workers themselves certainly think this important. But perhaps they want more only because the work they do is so boring. Money just lets them enjoy their spare time more. A similar argument may explain demands for shorter working hours. Perhaps if we succeed in making their jobs more interesting, they will neither want more, nor will shorter working hours be so important to them.

单选题Because the workers were new and inexperienced, the manager had to watch them and ______ their work closely. A. attend B. demand C. analyze D. supervise

单选题New research suggests gossip could actually lower ______ and help people overcome the frustration of seeing someone doing something wrong and getting away with it. A. press B. bless C. cress D. stress

单选题The moon, being much nearer to the Earth than the Sun, is the______cause of the tide.

单选题Most of the waiters are ______ in their work because the owner of the restaurant does not pay them on time.

单选题 on the morning of September' 11 th, I boarded the train from Washington Heights in Upper Manhattan just as usual and went to the Body Positive office in the South Street Seaport of Lower Manhattan. While I was leaving the subway at 8:53 am, a man ran down the street screaming, "Someone just bombed the World Trade Center." Those around me screamed and shouted "No !" in disbelief. However, being an amateur photographer, and thinking that I might be able to help out, I ran directly toward the WTC I stopped just short of the WTC at a corner and looked Up. There before me stood the gaping hole and fire that had taken over the first building. I stood there in shock taking pictures, wanting to run even closer to help out, but I could not move: Soon I saw what looked like little angels floating down from the top of the building. I began to cry when I realized that these "angels"--in fact, desperate office workers--were coming down, some one-by-one, some even holding hands with another. Could I actually be seeing this disaster unfold with hundreds of people around me crying, screaming and running for safety? As I watched in horror, another white airliner came from the south and took aim at the South Tower. As the plane entered the building, there was an explosion and fire and soon debris (碎片) began to fall around me. It was then that I realized that we were being attacked and that this was just not a terrible accident. Yet, I still could not move, until I was pushed down by the crowd on the street, many now in a panic running toward the water, as far from the WTC as they could possibly get. All around me were the visual reminders of hundreds of people running in panic. There Were shoes, hats, briefcases, pocketbooks, newspapers, and other personal items dropped as hundreds of people ran for safety. Much has been written about the disaster already. We have learned so much in such a small amount of time about appreciating life. In some way we must move forward, bury the dead, build a memorial for those lost, and begin the coping and healing process for the survivors. But healing takes time, Some have been able to head right back to work, others seek counseling, while others remain walking through the streets with expressionless faces. However, we are all united in our grief.

单选题The flowers bloomed yesterday and seems to wither in a few minutes.

单选题{{B}}Directions:{{/B}} There are 4 reading passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C, and D. You should decide on the best choice and mark your answer on the ANSWER SHEET by blackening the corresponding letter in the brackets. All types of stress study, whether under laboratory or real-life situations, study mechanisms for increasing the arousal level of the brain. The brain blood flow studies show that reciting the days of the week and months of the year increases blood flow in appropriate areas, whereas problem solving which demands intense concentration of a reasoning type produces much larger changes in the distribution of blood in the brain. Between these basic studies of brain function and real-life situations there is still a considerable gap, but reasonable deduction seems possible to try and understand what happens to the brain. Life consists of a series of events which may be related to work or to our so-called leisure time. Work may be relatively automatic--as with typing, for instance. It requires intense concentration and repetition during the learning phase to establish a pattern in the brain. Then the typist's fingers automatically move to hit the appropriate keys as she reads the words on the copy. However, when she gets tired she makes mistakes much more frequently. To overcome this she has to raise her level of arousal and concentration but beyond a certain point the automatic is lost and thinking about hitting the keys leads to more mistakes. Other jobs involve intense concentration such as holding bottles of wine up to a strong light and turning them upside down to look for particles of dirt falling down. This sounds quite easy but experience teaches that workers can do this for only about thirty minutes before they start making a mistake. This is partly because the number of occasions with dirt in the bottle is low and the arousal level, therefore, fails. Scientists have shown that devices to raise arousal level will increase the accuracy of looking for relatively rare events. A recent study of the effect of loss of sheep in young doctors showed that in tests involving a challenge to their medical judgment when short of sleep they raised their arousal level and became better at tests of grammatical reasoning as well.

单选题When he was asked about the missing camera, the boy ______ ever seeing it. A. refused B. denied C. opposed D. pretended

单选题The word "harmful" in the last paragraph most probably means ______.

单选题The new secretary has written a remarkably ______ report within a few hundred words but with all the important details included. A. concise B. precise C. brisk D. elaborate

单选题It is a______that in such a rich country there should be so many poor people. (2006年中国矿业大学考博试题)

单选题The once separate issue of environment and development are now ______ linked.

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