单选题Scratchy throats, stuffy noses and body aches all spell misery, but being able to tel1 if the cause is a cold or flu may make a difference in how long the misery lasts. The American Lung Association (ALA) has issued new guidelines on combating colds and the flu, and one of the keys is being able to quickly tell the two apart. That"s because the prescription drugs available for the flu need to be taken soon after the illness sets in. As for colds, the sooner a person starts taking over-the-counter remedy, the sooner relief will come. The common cold and the flu are both caused by viruses. More than 200 viruses can cause cold symptoms, while the flu is caused by three viruses—flu A, B and C. There is no cure for either illness, but the flu can be prevented by the flu vaccine, which is, for most people, the best way to fight the flu, according to the ALA. But if the flu does strike, quick action can help. Although the flu and common cold have many similarities, there are some obvious signs to look for. Cold symptoms such as stuffy nose, runny nose and scratchy throat typically develop gradually, and adults and teens often do not get a fever. On the other hand, fever is one of the characteristic features of the flu for all ages. And in general, flu symptoms including fever and chills, sore throat and body aches come on suddenly and are more severe than cold symptoms. The ALA notes that it may be particularly difficult to tell when infants and preschool age children have the flu. It advises parents to call the doctor if their small children have flu-like symptoms. Both cold and flu symptoms can be eased with over-the-counter medications as well. However, children and teens with a cold or flu should not take aspirin for pain relief because of the risk of Reye syndrome, a rare but serious condition of the liver and central nervous system. There is, of course, no vaccine for the common cold. But frequent hand washing and avoiding close contact with people who have colds can reduce the likelihood of catching one.

单选题If they don't understand it the first time, go over it again ______ they do. A. when B. after C. since D. until

单选题Although the city is small, its library is as complete______. A．as a large city B．like a large city C．as that of a large city D．like in a large city

单选题Building designers competed for the project because ______.

单选题The table before which we sit may be, as the scientist maintains, composed of dancing atoms, but it does not reveal itself to us as anything of the kind, and it is not with dancing atoms but a solid and motionless object that we live. So remote is this "real" table—and most of the other "realities" with which science deals—that it cannot be discussed in terms which have any human value, and though it may receive out purely intellectual credence it cannot be woven into the pattern of life as it is led, in contradistinction to life as we attempt to think about it. Vibrations in the either are so totally unlike, let us say, the color purple that the gulf between them cannot be bridged, and they are, to all intents and purposes, not one but two separate things of which the second and less "real" must be the most significant for us. And just as the sensation which has led us to attribute an objective reality to a non-existent thing which we call "purple" is more important for human life than the conception of vibrations of a certain frequency, so too the belief in God, however ill founded, has been more important in the life of man than the germ theory of decay, however true the latter may be. We may, if we like, speak of consequence, as certain mystics love to do, of the different levels or orders of truth. We may adopt what is essentially a Platonist trick of thought and insist upon postulating the existence of external realities which correspond to the needs and modes of human feeling and which, so we may insist, have their being is some part of the universe unreachable by science. But to do so is to make an unwarrantable assumption and to be guilty of the metaphysical fallacy of failing to distinguish between a truth of feeling and that other sort of truth which is described as a "truth of correspondence," and it is better perhaps, at least for those of us who have grown up in an age of scientific thought, to steer clear of such confusions and to rest content with the admission that, though the universe with which science deals is the real universe, yet we do not and cannot have any but fleeting and imperfect contacts with it; that the most important part of our lives-our sensations, emotions, desires, and aspirations-takes place in a universe of illusions which science can attenuate or destroy, but which it is powerless to enrich.

单选题Woman: I met Tom the other day. You know what, he has cut his long hair. It seems that he is a notably different person than he was three years ago. Man: Yeah. He is now a conformist. Question: What was Tom like three years ago?

单选题She has______some brilliant scheme to double her income. A. come out 13. come up with C. come to D. come about

单选题Given the existence of so many factions in the field, it was unrealistic of Anna Freud to expect any ______ of opinion. A. freedom B. reassessment C. uniformity D. expression

单选题Since most doctors are______ about effectiveness of the new medicine, they seldom recommend it to their patients.(2003年南京大学考博试题)

单选题Lodger: I' m terribly sorry that I broke your precious vase. I' 11 pay for it.Landlady:______A. Can't complain.B. Never mind.C. Relax yourself.D. Take car

单选题Some would consider such speech {{U}}an infringement{{/U}} of good mariners whereas others would not.

单选题Since he started working at the age of 20, he has not______turned to his father for money.

单选题The unprecedentedly big floods in our village did not start to______until four days after the torrential rain had stopped.

单选题What's the world's greatest moral challenge, as judged by its capacity to inflict human tragedy? It is not, I think, global warming, whose effects—if they become as grim as predicted—will occur over many years and provide societies time to adapt. A case can be made for preventing nuclear proliferation, which threatens untold deaths and a collapse of the world economy. But the most urgent present moral challenge, I submit, is the most obvious: global poverty. The solution to being poor is getting rich. It's economic growth. We know this. The mystery is why all societies have not adopted the obvious remedies. Just recently, the 21-member Commission on Growth and Development examined the puzzle. Since 1950, the panel found, 13 economies have grown at an average annual rate of 7 percent for at least 25 years. The panel identified five common elements of success: Openness to global trade and, usually, an eagerness to attract foreign investment; political stability and "capable" governments "committed" to economic growth; high rates of saving and investment, usually at least 25 percent of national income; economic stability, keeping government budgets and inflation under control and avoiding a broad collapse in production; a willingness to "let markets allocate resources," meaning that governments didn't try to run industry. Of course, qualifications abound, still, broad lessons are clear. Globalization works. Countries don't get rich by staying isolated. Those that embrace trade and foreign investment acquire know-how and technologies, can buy advanced products abroad, and are forced to improve their competitiveness. The transmission of new ideas and products is faster than ever. There is a role for foreign aid, technical assistance and charity in relieving global poverty. But it is a small role. It can improve health, alleviate suffering from natural disasters or wars, and provide some types of skills. But it cannot single: handedly stimulate the policies and habits that foster self-sustaining growth. Japan and China have grown rapidly not because they received foreign aid but because they pursued pro-growth policies and embraced pro-growth values. The hard question is why all societies haven't adopted them. One reason is politics; some regimes are more interested in preserving their power and privileges than in promoting growth. But the larger answer, I think, is culture, as Lawrence Harrison of Tufts University argues. Traditional values, social systems or religious views are often hostile to risk-taking, wealth accumulation and economic growth. In his latest book, Harrison contends that politics can alter culture, hut it isn't easy. Globalization has moral as well as economic and political dimensions. The United States and other wealthy countries are experiencing an anti-globalization backlash. Americans and others are entitled to defend themselves from economic harm, but many of the allegations against globalization are wildly exaggerated. By making globalization an all-purpose scapegoat for economic complaints, many "progressives" are actually undermining the most powerful force for eradicating global poverty.

单选题We were late as usual. My husband had (21) watering the flowers in the garden by himself, and when he discovered that he couldn't manage, he asked me for (22) at the last moment. So now we had only one hour to get to the airport. Luckily, there were not many cars (23) buses on the road and we were (24) to get there .just in time. We checked in and went straight to a big hall to wait for our flight to be called. We waited and waited (25) no announcement was made. We asked for (26) and the girl there told us the plane hadn' t even arrived yet. In the end, there came an announcement telling us that those (27) for flight No. 108 could get a free meal voucher and that the plane hadn't left Spain (28) technical problems. We thought that meant (29) it wasn' t safe for the plane to (30) We waited again for a long time until late evening when we were asked to report again. This time we were (31) free vouchers to spend the night in a nearby hotel. The next morning after a (32) night because of all the planes taking off and landing, we were reported back to the airport. Guess (33) had happened while we were asleep. Our plane had arrived and taken off again. All the other (34) had been waken up in the night to catch the plane, but for some reasons or other we had been (35) You can imagine how we felt!

单选题You can hang up what you like on these ______ walls.

单选题What is often served before one's order?

单选题The scarcity of TV selection according to the text

单选题Under ethical guideline recently adopted by the National Institutes of Health, human genes are to be manipulated only to correct disease for which ______ treatments are unsatisfactory.(2014年北京航空航天大学考博试题)

单选题Bob Dylan is ______.