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, but 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Why does cream go bad faster than butter? Some researchers think they have the answer, and it comes down to the structure of the food, not its chemical composition--a finding that could help rid some processed foods of chemical preservatives. Cream and butter contain pretty much the same substances, so why cream should sour much faster has been a mystery. Both are emulsions--tiny globules(小球体)of one liquid evenly distributed throughout another. The difference lies in what's in the globules and what's in the surrounding liquid, says Brocklehurst, who led the investigation. In cream, fatty globules drift about in a sea of water. In butter, globules of a watery solution are locked away in a sea of fat. The bacteria which make the food go bad prefer to live in the watery regions of the mixture. "This means that in cream, the bacteria are free to grow throughout the mixture," he says. When the situation is reversed, the bacteria are locked away in compartments(隔仓室)buried deep in the sea of fat. Trapped in this way, individual colonies cannot spread and rapidly run out nutrients(养料). They also slowly poison themselves with their waste products. "In butter, you get a self--limiting system which stops the bacteria growing," says Broeklehurst. The researchers are already working with food companies keen to see if their products can be made resistant to bacterial attack through alterations to the food's structure. Brocklehurst believes it will be possible to make the emulsions used in salad cream, for instance, more like that in butter. The key will be to do this while keeping the salad cream liquid and not turning in into a solid lump.

单选题According to the passage, which of the following statements about knitting is NOT true?

单选题Common-cold Sense You can't beat it, but you don't have to join it. Maybe it got the name "common cold" because it's more common in winter. The fact is, though, being cold doesn't have anything to do with getting one. Colds are caused by the spread of rhinoviruses, and, at least so far, medical science is better at telling you how to avoid getting one than how to get rid of one. Children are the most common way cold viruses are spread to adults, because they have more colds than adults-an average of about eight per year. Why do kids seem so much more easily to get colds than their parents? Simple. They haven't had the opportunity to become immune to many cold viruses. There are more than 150 different cold viruses, and you never have the same one twice. Being infected by one makes you immune to it-but only it. Colds are usually spread by direct contact, not sneezing or coughing. From another person's hand to your hand and then to your nose or eyes is the most common route. The highest concentration of cold viruses anywhere is found under the thumbnails of a boy, although the viruses can survive for hours on skin or other smooth surfaces. Hygiene is your best defense. Wash your hands frequently, preferably with a disinfectant soap, especially when children in your household have colds. But even careful hygiene won't ward off every cold. So, what works when a coughing, sneezing, runny nose strikes? The old prescription of two aspirins, lots of water, and bed rest is a good place to start. But you'll also find some of the folk remedies worth trying. Hot mixtures of sugar(or honey), lemon, and water have real benefits.

单选题The girl is {{U}}gazing{{/U}} at herself in the mirror. A. smiling B. laughing C. shouting D. staring

单选题The steadily rising cost of labor on the waterfront has greatly increased the cost of shipping cargo by water.

单选题We are engaged in the interdisciplinary field of the science and technology of materials.A. take upB. busy withC. interested inD. take in

单选题We packed up the things I had accumulated over the last three years and left for good.A. closeB. nearC. pastD. final

单选题Study Confirms Red Meat Link with Bowel (结肠) Cancer People who eat more than 160 grams of red or processed meat a day are 35 percent more likely to develop bowel cancer than those who eat less (51) 20 grams a day, according to one of the biggest nutrition investigations ever carried out. The European Prospective Investigation into Cancer and Nutrition followed 478,040 men and women_ (52) 35 to 70 from 10 European countries. All subjects were free of cancer at enrollment between 1992 and 1998, but (53) an average follow-up of almost 5 years 1,329 bowel cancers had been reported. The subsequent analysis, published in the Journal of the National Cancer Institute, confirms the long-held suspicion (54) high intakes (纳入量) of red meat are associated with increased bowel (55) risk. After taking into consideration factors like age, sex, height, weight, energy intake, physical activity, smoking, and alcohol consumption, the investigators found that bowel cancer was (56) with intake of red and processed meat but not chicken. Risk of bowel cancer dropped with increasing intake of fish. Eating more than 80 grams a day of fish was associated (57) a 31 percent reduction in risk compared with eating less than 10 grams a (58) . Subjects with high red meat and low fish intake were at 63 percent higher risk of bowel cancer compared with subjects with low red meat and high fish (59) . In addition, the risk of developing the disease was increased for (60) people who ate a low fibre diet. Sheila Bingham, study investigator at the UK's Medical Research Council nutrition unit, said: "People have suspected for some time that high levels of red and processed meat (61) risk of bowel cancer, but this is one of the largest studies worldwide and the first from Europe of this type to show a (62) relationship." She added in a statement: "The overall picture is very consistent for red and processed meat and fibre across all the (63) populations studied." Study coordinator, Elio Riboli, of the World Health Organisation International Agency for Research into Cancer, said: "Other risk factors for (64) cancer include obesity (肥胖) and lack of physical activity. Smoking and excess alcohol may also play a (65) . These factors were all taken into account in the analysis./

单选题This passage is mainly about

单选题The story was very touchinq. A．inspiring B．boring C．moving D．absorbing

单选题The workers finally called off the strike.

单选题With the establishment of the Environmental Protection Agency in the United States, the environmental lobby became more overtly political.

单选题People now enjoy longer lives for unknown reasons.

单选题The article sketched the major events of the decade.

单选题He is sure of a house-building boom after the new investment policies are put into practice. A. decrease B. increase C. influence D. preparation

单选题下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提供的是正确信息，请选择A；如果该句提的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。 Some sleep drugs do more than make you sleep The United States Food and Drug Administration (美国食品及药品管理局) has ordered companies to place strong new warnings on thirteen drugs that treat sleep disorders. It also ordered the makers of the sleeping pills to provide information for patients explaining how to safely use the drugs. Last Wednesday, the FDA announced that some of these drugs can have unexpected and dangerous effects. These include the risk of life-threatening allergic (过敏性的) reactions. They also include rare incidents of strange behavior. These include people cooking food, eating and even driving while asleep. The patients later had no memory of doing these activities while asleep. Last year, a member of the United States Congress said he had a sleep-driving incident. Patrick Kennedy, a representative from Rhode Island, crashed his car into a security barrier near the building where lawmakers meet. The accident happened in the middle of the night and no one was hurt. Mr. Kennedy said he had earlier taken a sleep medicine. He said he was also being treated with a stomach sickness drug that can cause sleepiness. The Food and Drug Administration did not say in its announcement how many cases of sleep driving it has documented. However, the New York Times reported last year about people who said they had strange sleep events after taking the drug Ambien. Some reported sleep-driving and sleepwalking. Others said they found evidence after waking in the morning that they had cooked food or eaten in their sleep. But they had no memory of carrying out the activities. A Food and Drug Administration official says that these serious side effects of sleep disorder drugs appear to be rare. But, he also said there are probably more cases than are reported. He said the agency believes the risk of such behaviors could be reduced if people take the drugs as directed and do not drink alcohol while taking the drugs. The Food and Drug Administration has advised drug companies to carry out studies to investigate the problem.

单选题The largest part of our {{U}}revenue{{/U}} comes from Consumer and Salons activities.

单选题Sometimes liposuction patients may have to undergo more than one operation．

单选题While NICE's decisions have angered some doctors and patient groups -particularly some oncologists (肿瘤科医生) who say they are unable to prescribe expensive, life- extending cancer drugs- mainstream politicians, the media and most Britons accept NICE's rare rejections as a necessary compromise to keep universal coverage affordable in the face of rising health -care costs. As NICE chairman Sir Michael Rawlins recently told TIME, "All health -care systems have implicitly, if not explicitly, adopted some form of cost control. In the U. S. , you do it by not providing health care to some people. That's a rather brutal way of doing it. " NICE's decisions hear the loudest voice of disapproval fromA. some oncologists.B. mainstream politicians.C. the media.D. most Britons.