单选题Italian ice cream is imitated all over the world. A. copied B. ignored C. organized D. provided

单选题There are only five minutes left，but the outcome of the match is still in doubt．

单选题 Laughter There is an old saying in English: "Laughter is the best medicine." Until recently, few people took the saying very seriously. Now, however, doctors have begun to investigate laughter and the effects it has on the human body. They have found evidence that laughter really can improve people's health. Tests were carried out to study the effects of laughter on the body. People watched funny films, while doctors checked their heart rate blood pressure, breathing and muscles. It was found that laughter has similar effects to physical exercise. It increases blood pressure, the heart rate and the rate of breathing; it also works several groups of muscles in the face, the stomach, and even the feet. If laughter exercises the body, it must be beneficial. Other tests have shown that laughter appears to be capable of reducing the effect of pain on the body. In one experiment doctors produced pain in groups of students who listened to different radio programs. The group which tolerated the pain for the longest time was the group which listened to a funny program. The reason why laughter can reduce pain seems to be that it helps to produce endorphins(内啡肽) in the brain. These are natural chemicals which diminish both stress and pain. There is also some evidence to suggest that laughter helps the body's immune system, that is the system which fights infection. In an experiment, one group of students watched a funny video while another group served as the control group—in other words, a group with which to compare the first group. Doctors checked the blood of the students in both groups and found that the people in the group that watched the video had an increase in the activity of their white blood cells, that is the cells which fight infection. As a result of these discoveries, some doctors and psychiatrists(精神病学) in the United States now hold laughter clinics, in which they try to improve their patients' condition by encouraging them to laugh. They have found that even if their patients do not really feel like laughing, making them smile is enough to produce beneficial effects similar to those caused by laughter.

单选题As a matter of fact, I love soft music more than popular music. A. Basically B. Probably C. Actually D. Accurately

单选题Importance of the Public Image Public image refers to how a company is viewed by its customers, suppliers, and stockholders, by the financial community, by the communities in which it operates, and by federal and local governments. Public image is controllable 16 , just as the product, price, place, and promotional efforts are. A firm"s public image 17 a vital role in the attractiveness of the firm and its products to employees, customers, 18 to such outsiders as stockholders, suppliers, creditors, government officials, as well as diverse special groups. With some things it is 19 to satisfy all the diverse publics, for example, a new highly automated plant may meet the approval of creditors and stockholders, but 20 will undoubtedly find resistance from employees who see their 21 threatened. On the other hand, high-quality products and service standards should bring almost complete approval, 22 low quality products and false claims would be widely looked down upon. A firm"s public image, 23 it is good, should be treasured and protected. It is a valuable asset 24 usually is built up over a long and satisfying relationship of a firm with its publics. If a firm has 25 a quality image, this is not easily countered or imitated by competitors. 26 an image may enable a firm to charge higher prices, to woo the best distributors and dealers, to attract the best employees, to expect 27 favorable creditor relationships and lowest borrowing costs. It should also allow the firm"s stock to command a higher price-earnings ratio than other firms in the same industry 28 such a good reputation and public image. A number of factors affect the public image of a corporation. 29 include physical facilities, contacts of outsiders with company employees, product quality and dependability, prices 30 competitors, customer service, the kind of advertising and the media and programs used, and the use of public relations and publicity.

单选题Which type of robot is NOI mentioned in the last paragraph?

单选题Spindler's team fed three mice a normal diet for their whole lives, and fed another three on half-rations. Three more mice were switched from the normal diet to half-feed for a month when they were 34 months old-equivalent to about 70 human years. The researchers checked the activity of 11,000 genes from the mouse livers,and found that 46 changed with age in the normally fed mice. The changes were associated with things like inflammation and free production-probably bad news for mouse health. In the mice that had dieted all their lives, 27 of those 46 genes continued to behave like young genes. But the most surprising finding was that the mice that only started dieting in old age also benefited from 70 per cent of these gene changes. The researchers found that ______ genes changed with age in the mice that had dieted all their lives.A. 46B. 27C. 19D. 32

单选题下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题。{{B}}第一篇{{/B}} {{B}}The Now Rich and the Old Rich{{/B}} Though it is mere 1 to 3 percent of the population, the upper class possesses at least 25 percent of the nation’s wealth. This class has two segments: upper-upper and lower-upper. Basically, the upper-upper class is the “old rich”—families that have been wealthy for several generations and aristocracy of birth and wealth. Their names are in the Social Register, a listing of acceptable members of high society. A few are known across the nation, such as the Rockfellers, Roosevelts, and Vanderbilts. Most are not visible to the general public. They live in grand seclusion (深居简出), drawing their income from the investment of their inherited wealth. In contrast, the lower upper class is the “new rich”. Although they may he wealthier than some of the old rich, the new rich have hustled(急于做)to make their money like everybody else beneath their class. Thus their prestige is generally lower than that of the old rich, who have not found it necessary to lift a finger to make their money, and who tend to look down upon the new rich. However its wealth is acquired, the upper class is very, very rich. They have enough money and leisure time to cultivate an interest in the arts and to collect rare books, painting, and sculpture. They generally live in exclusive areas, belong to exclusive social clubs, communicate with each other, and marry their own kind — all of which keeps them so distant from the masses that they have been called the out-of-sight class. They also command an enormous amount of power and influence here and abroad, as they hold many top government positions, run the Council on foreign relations, and control multinational corporations. Their actions affect the lives of millions.

单选题Loud noises can be annoying.A. hatefulB. painfulC. horrifyingD. disturbing

单选题It is easy to misjudge the strength of the wind.

单选题I enjoyed the play--it had a clever plot and very funny dialogues.A. boringB. originalC. humorousD. long

单选题The first paragraph mentions three ways of activating the saliva in the mouth.

单选题Bees and Colour On our table in the garden we put a blue card, and all around this blue card we put a number of different grey cards. These grey cards are of all possible shades of grey and include white and black. On each card a watch-glass is placed. The watch-glass on the blue card has some syrup(果汁) in it, all the others are empty. After a short time bees find the syrup, and they come for it again and again. Then, after some hours, we take away the watch-glass of syrup which was on the blue card and put an empty one in its place. Now what do the bees do? They still go straight to the blue card, although there is no syrup there. They do not go to any of the grey cards, in spite of the fact that one of the grey cards is of exactly the same brightness as the blue card. Thus the bees do not mistake any shade of grey for blue. In this way we have proved that they do really see blue as a colour. We can find out in just the same way what other colours bees can see. It turns out that bees can see various colours, but these insects differ from us as regards their colour-sense in two very interesting ways. Suppose we train bees to come to a red card, and, having done so, we put the red card on the table in the garden among the set of different grey cards. This time we find that the bees mistake red for dark grey or black. They cannot distinguish between them. This means that red is not a cotour at all for bees; for them it is just dark grey or black. That is one strange fact; here is another. A rainbow is red on one edge, violet on the other. Outside the violet of the rainbow there is another colour which we cannot see at all. This colour beyond the violet, invisible to us, is called the ultra-violet. Although it is invisible, we know that the ultra-violet is there because it affects a photographic plate. Now, although we are unable to see ultra-violet light, bees can do so; for them ultra-violet is a colour. Thus bees see a colour which we cannot even imagine. This has been found out by training bees to come for syrup to various parts of a spectrum, or artificial rainbow, thrown by a prism on a table in a dark room. In such an experiment the insects can be taught to fly to the ultra-violet, which for us is just darkness.

单选题Our lives are intimately bound up with theirs.

单选题All gases and most liquids and solids expand when heated, but they do not expand {{U}}equally{{/U}}.

单选题Plants in Desert Only special plants can survive the terrible climate of a desert, for these are regions where the annual range of the soil temperature can be over 75 %. Furthermore, during the summer there are few clouds in the sky to protect plants from the sun"s ray. Another problem is the fact that there are frequently strong winds that drive small, sharp particles of sand into the plants, tearing and damaging them. The most difficult problem for all forms of plant life, however, is the fact that the entire manual rainfall occurs during a few days or weeks in spring. Grasses and flowers in desert survive from one year to the next by existing through the long, hot, dry season in the form of seeds. These seeds remain inactive unless the right amount of rain falls. If no rain falls, or if insufficient rain falls, they wait until the next year, or even still the next. Another factor that helps these plants to survive is the fact that their life cycles are short. By the time the water from the spring rains disappears—just a few weeks after it falls—such plants no longer need any. The perennials (多年生植物) have special features that enable them to survive as plants for several years. Thus, nearly all desert perennials have extensive root systems below ground and a small shoot system above ground. The large root network enables the plant to absorb as much water as possible in short time. The small shoot system, on the other hand, considerably limits water loss by evaporation (蒸发). Another feature of many perennials is that after the rainy season they lose their leaves in preparation for the long, dry season, just as trees in wetter climates lose theirs in preparation for the winter. This reduces their water loss by evaporation during the dry season. Then, in next rainy season, they come fully alive once more, and grow new branches, leaves and flowers, just as the grasses and flowers in desert do.

单选题He has trouble understanding that other people judge him by his social skills and conduct .

单选题 Young Female Chimps Outlearn Their Brothers Young female chimps are faster and better learners than young male chimps, suggest a new study, echoing learning differences seen in human girls and boys. While young male chimps pass their time playing, young female chimps carefully study their mothers. As a result, they learn how to fish fortasty termite snacks over two years before the boys. Elizabeth Lonsdorf, now at Lincoln Park Zoo in Chicago, US, and colleagues at the University of Minnesota, Saint Paul, spent four years watching how young chimpanzees in the Gombe National Park in Tanzania learned "cultural behavior". The sex differences in learning behavior were "consistent and strikingly apparent", says the team. The researchers point out that similar differences are seen in human children with regard to skills such as writing. "A sex-based learning differences may therefore date back at least to the last common ancestor of chimpanzees and humans," they write in the journal Nature. Chimps make flexible tools from vegetation and then insert them into termite mounds extract them and then munch the termites clinging onto the tool. The researchers used video cameras to record this feeding behavior and found that each chimp mother had her own technique. Such as how she used tools of different lengths. Analysis of the six infants whose ages were known showed that girl chimps were an average of 31 months old when they succeeded in fishing out their termites, where the boy chimps were aged 58 months on average. Females were also more skillful at getting out more termites with every dip and used techniques similar to their mothers while males did not. Instead of studying their mothers, the boy chimps spent a significantly greater amount of time frolicking around the termite mound. Behaviors such as playing or swinging might help the male infants later in life when typically male activities like hunting or fighting for dominance become important, suggest the researchers. Lonsdorf adds that there are just two main sources of animal protein for chimps—the termites or colobus monkeys. "Mature males often hunt monkeys up trees. But females are almost always either pregnant or burdened with a clinging infants. This makes hunting difficult," she says. "Adult females spend more time fishing for termites than males." So becoming proficient at termite fishing could mean adult females eat better, "They can watch their offspring at the same time. The young of both sexes seem to pursue activities related to their adult sex roles at a very young age."

单选题{{B}}第三篇{{/B}} {{B}} Generation Gap{{/B}} A few years ago, it was fashionable to speak of a generation gap, a division between young people and their elders. Parents complained that children did not show them proper respect and obedience, while children complained that their parents did not understand them at all. What had gone wrong? Why had the generation gap suddenly appeared? Actually, the generation gap has been around for a long time. Many critics argue that it is built into the fabric of our society. One important cause of the generation gap is the opportunity that young people have to choose their own life styles. In more traditional societies, when children grow up, they are expected to live in the same area as their parents, to marry people that their parents know and approve of, and often to continue the family occupation. In our society, young people often travel great distances for their education, most out of the family home at an early age, marry or live or choose occupations different from those of their parents. In our upwardly mobile society, parents often expect their children to do better than they did: to find better jobs, to make more money, and to do all the things that they were unable to do. Often, however, the ambitions that parents have for their children are another cause of the division between them. Often they discover that they have very little in common with each other. Finally, the speed at which changes take place in our society is another cause of the gap between the generations. In a traditional culture, elderly people are valued for their wisdom, hut in our society the knowledge of a lifetime may Become obsolete overnight. The young and the old seem to live in two very different worlds, separated by different skills and abilities. No doubt, the generation gap will continue to be a feature of American life for some time to come. Its causes are rooted in the freedoms and opportunities of our society, and in the rapid pace at which society changes.

单选题You can arrive in Beijing earlier for the meeting ______ you don't mind taking the night train.A. ifB. unlessC. thoughD. until