单选题{{U}}Flattery{{/U}} will get you nowhere.

单选题A Dolphin and an Astronomer One day in 1963, a dolphin named Elvar and a famous astronomer, Carl Sagan, were playing a little game. The astronomer was visiting an institute which was looking into the way dolphins communicate with each other. Sagan was standing on the edge of one of the tanks where several of these friendly, highly intelligent creatures were kept. Elvar had just swum up alongside him and had turned on his back. The dolphin wanted Sagan to scratch his stomach again, as the astronomer had done twice before. Elvar looked up at Sagan, waiting. Then, after a minute or so, the dolphin leapt up through the water and made a sound just like the word "more". The astonished astronomer went to the director of the institute and told him about the incident. "Oh, yes. That"s one of the words he knows," the director said, showing no surprise at all. Dolphins have bigger brain in proportion to their body size than humans have, and it has been known for a long time that they can make a number of sounds. What is more, these sounds seem to have different functions, such as warning each other of danger. Sound travels much faster and much further in water than it does in air. That is why the parts of the brain that deal with sound are much better developed in dolphin than in humans. But can it be said that dolphins have a "language", in the real sense of the word? Scientists don"t agree on this. A language is not just a collection of sounds, or even words. A language has a structure and what we call a grammar. The structure and grammar of a language help to give it meaning. For example, the two questions "Who loves Mary?" and "Who does Mary love?" mean very different things. If you stop to think about it, you will see that this difference doesn"t come from the words in the question but from the difference in structure. That is why the question "Can dolphins speak?" can"t be answered until we find out if dolphins not only make sounds but also arrange them in a grammatical Order which affects their meaning.

单选题These are our motives for doing it.

单选题It grew chilly when the fire went out.

单选题1. Drug Reactions——A Major Cause of Death Adverse (有害的) drug reactions may cause the deaths of over 100, 000 US hospital patients each year, making them a leading cause of death nationwide, according to a report in the Journal of the America Medical Association. "The incidence of serious and fatal adverse drug reactions (ADRs) in US hospitals was found to be extremely high, " say researchers at the University of Toronto in Ontario, Canada. They carried on an analysis of 39 ADR--related studies at US hospitals over the past 30 years and defined an ADR as "any harmful, unintended, and undesired effect of a drug which Occurs at doses used in humans for prevention, diagnosis, or therapy. " An average 6.7% of all hospitalized patients experience an ADR every, year, according to the researchers. They estimate that "in 1 994, overall 2, 216, 000 hospitalized patients had serious ADRs, and 106, 000 had fatal ADRs. "This means that ADRs may rank as the fourth single largest cause of death in America. And these incidence figures are probably conservative, the researchers adds since their ADR, denition did not include outcomes linked to problems in drug administration, overdoses, drug abuse, and therapeutic failures. The control of ADRs also means spending more money. One US study estimated the overall cost of treating ADRs at up to $ 4 billion per year. Dr. David Bates of Brigham and Women's Hospital in Boston, Massachusetts, believes that healthcare workers need to pay more attention to the problem, especially since many ADRs are easily preventable. "When a patient develops and allergy or sensitivity, it is often not recorded, " Bates notes, " and patients receive drugs to which they have known allergies or sensitivities with disturbing frequency. "He believes computerized surveillance (监督) systems - still works - in - progress at many of the nation' s hospitals - should help cut down the frequency of these types oferrors.

单选题The prices of the {{U}}commodities{{/U}} are quite stable these years.

单选题Hundreds of years ago, our ancestors came to this land and settled down.

单选题The union representative {{U}}put across{{/U}} her argument very effectively. A. invented B. explained C. considered D. accepted

单选题Cooking Oil Fumes Cause Tumor The leading cause of lung cancer among women in the city was cooking oil fumes while men are more likely to develop the disease from smoking, said medical experts after a five-year research study. Doctors announced the results yesterday with analysis on some new tendencies in lung cancer. They said patients are younger, especially women. According to the Shanghai Tumor research Institute, more local residents die of lung cancer in the city than anything else. Following breast cancer, it has the second-highest incidence rate. "An unhealthy lifestyle is a very important reason for lung cancer, " said Dr. He Yumin from Shanghai Minshen Traditional Chinese Medicine Tumor Diagnosis and Treatment Center. He followed 2,276 lung cancer patients for five years. Among them, 1,483 were male. Smoking causes 70 percent of cases among men while only 18 percent of female patients developed cancer from smoking or inhaling second-hand smoke, according to the report. However, more than 60 percent of women with the disease had long term, close contact with strong oil fumes from cooking and complained about irritated eyes and throat. About 32 percent of women fried foods in boiling oil in unventilated kitchens and about 25 percent of women's bedrooms were adjacent to the kitchen. However, local women were surprised to learn cooking oil fumes could lead to cancer. Some claimed they may change food preparation methods. "Unless my family and I don't eat at home every day, I must stay in the kitchen to cook," said Xu Li, a 45-year-old local woman. "I know the fumes are bad for the skin, but it is the first time I heard that it can result in lung cancer. I have already started frying less. " Doctors said women's lung cancer had few links to personal health and physical condition, but was closely related to family cancer history, unhealthy dietary habits and weak immune systems. Other experts agreed with He. "Smoking is by far the biggest cause of lung cancer for men," said Dr. Tan Binyong, honorary president of the Respiratory Disease Institute at Fudan University's Medical College. "It's true that second-hand smoke and cooking fumes are the main causes among women. " He's research also warned people not to stand near of stalls selling fried foods due to the poor quality of oils used. The chance of catching lung cancer is three times higher if exposed to the fume for a long time, experts said.

单选题In the process, the light energy converts to heat energy.

单选题Henry cannot resist the lure of drugs A. abuse B. flavor C. temptation D. consumption

单选题Pushbike Peril Low speed bicycle crashes can badly injure — or even kill — children if they fall onto the ends of the handlebars. So a team of engineers is redesigning the humble handlebar in a bid to make it safer. Kristy Arbogast, a bioengineer at the Children's Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed that more than a third were caused by bicycle accidents. "The task was to identify how the injuries occurred and come up with some countermeasures, " she says. By interviewing the children and their parents, Arbogast and her team were able to reconstruct many of the accidents and identified a common mechanism responsible for serious injuries. They discovered that most occur when children hit an obstacle at a slow speed, causing them to topple over. To maintain their balance they turn the handlebars through 90 degrees — but their momentum forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen. The solution the group came up with is a handgrip fitted with a spring and damping system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact. The group hopes to commercialize the device, which should add only a few dollars to the cost of a bike. "But our task has been one of education because up until now, bicycle manufacturers were unaware of the problem, " says Arbogast. The team has also approached the US Consumer Product Safety Commission to try to persuade manufacturers to adopt the new design. A decision is expected later this year.

单选题The law carries a {{U}}penalty{{/U}} of up to three years in prison. A. message B. punishment C. guilt D. obligation

单选题Two events have highlighted the tensions in recent years.A. extendedB. emphasizedC. distortedD. illustrated

单选题I understand that George can play piano by ear; is that true?A. without dependence on written musicB. with his eyes closedC. by hitting the keys with his earsD. by someone who spoke into his ear

单选题Problems of Anxiety Training as mental-health professionals is supposed to be "color blind". That sounds fine but in practice it means that people from black and ethnic groups get an unfair treatment because their particular problems are seldom acknowledged. So a project was piloted involving Bangladeshi women in inner-city London, most of whom migrated to the U.K. in the 1960s and 1970s from a rural background. Many of these women turned to their doctors with common symptoms of anxiety, such as headaches, sleeping difficulties, loss of appetite and lack of energy. They were usually prescribed tranquillizers or even Vitamin C. Since the underlying causes remained, the women visited their doctors with increasing frequency and some were referred on to mental-health professionals. The psychologists wanted to see how normal Western approaches to anxiety problems might work when applied across cultures. However, they found that many things in the standard approach had to be changed. They had to translate many of the usual examples they would normally compare learning to relax with learning to drive, for instance, which would not have been culturally appropriate. At first they asked the women to rate, on a scale one to ten, the effect of relaxation on their level of anxiety. They found numbers an odd way of expressing how they were feeling. So psychologists shifted their focus to words and talked of five stages form "very good" to "very bad". As it was a pilot project, there were shortcomings. Psychologists looked for too little back-up and did not collect as much objective data as they might have done with a white group. They fell into the white stereotype of assuming that Bangladeshi women would find the use of various checklists and written records foreign. Perhaps racism has conditioned the professionals to a greater extent than they expected. Psychologists found that using a Western model across cultures has potential. But it needs political, financial and personal commitment.

单选题Smoking Can Increase Depressive Symptoms in Teens While some teenagers may puff on cigarettes to "self-medicate" (自我治疗) against the blues (忧郁), scientists at the University of Toronto and the University of Montreal have found that smoking may actually 1 depressive symptoms in some teens. "This observational study is one of the few to examine the perceived 2 benefits of smoking among teens," says lead researcher Michael Chariton, a research associate at the Ontario Tobacco Research Unit of the University of Toronto. " 3 cigarettes may appear to have self-medicating effects or to improve mood, in the long 4 we found that teens who started to smoke reported higher depressive symptoms. " As part of the study, some 662 high school teenagers completed up to 20 questionnaires about their use of cigarettes to 5 mood. Secondary schools were selected to provide a mix of French and English participants, urban and rural schools, and schools 6 in high, moderate and low socioeconomic neighborhoods. Participants were divided into three 7 : never smokers; smokers who did not use cigarettes to self-medicate improve mood or physical 8 ; smokers who used cigarettes to self-medicate. Depressive symptoms were measured using a scale that asked how often participants felt too tired to do things; had 9 going to sleep or staying asleep; felt unhappy, sad, or depressed; felt hopeless about the future; felt anxious or tense; and worried too much about things. "Smokers who used cigarettes as mood 10 had higher risks of elevated (提升) depressive symptoms 11 teens who had never smoked," says co-researcher Jennifer O"Loughlin, a professor at the University of Montreal Department of Social and Preventive Medicine. "Our study found that teen smokers who reported emotional benefits from smoking are 12 higher risk of depressive symptoms." The 13 between depression and smoking exits 14 among that use cigarettes to feel better. " It"s 15 to emphasize that depressive symptom scores were higher among teenagers who reported emotional benefits from smoking after they began to smoke," says Dr. Chariton.

单选题The Visually Impaired Person Visual impairment (损害) carries with it a reduced or restricted ability to travel through one's physical and social environment until adequate orientation and mobility skills have been established. Because observational skills are more limited, self-control within the immediate surroundings is limited. The visual impaired person is less able to anticipate hazardous situations or obstacles to avoid. Orientation refers to the mental map .one has of one's surroundings and to the relationship between self and that environment. The mental map is the best generated by moving through the environment and piecing together relationships, object by object, in an organized approach. With little of no visual feedback to reinforce this mental map, a visually impaired person must rely on memory for key landmarks and other clues. Landmarks and clues enable visually impaired person to affirm their position in space. Mobility, on the other hand, is the ability to travel safely and efficiently from one point to another within one's physical and social environment. Good orientation skills are necessary to good mobility skills. Once visually impaired students learn to travel safely as pedestrians (行人) they also need to learn to use public transportation to become as independent as possible. To meet the expanding needs and demands of the visually impaired person, there is a sequence of instruction that begins during the preschool years and may continue after high school. Many visually impaired children lack adequate concepts regarding time and space or objects and events in their environment. During the early years much attention is focused on the development of some fundamental concepts, such as inside or outside, in front of or behind, fast or slow, movement of traffic, the variety of intersections, elevators or escalators, and so forth. These concepts are essential to safe, efficient travel through familiar and unfamiliar settings, first within buildings, then in residential neighborhoods, and finally in business communities.

单选题{{B}}第三篇{{/B}} In most sectors of the economy, it is the seller who attempts to attract a potential buyer with various inducements of price, quality and utility, and it is the buyer who makes the decision. In the health care industry, however, the doctor-patient relation- ship is the mirror image of the ordinary relationship between producer and consumer. Once an individual has chosen to see a physician, the physician usually makes all significant purchasing decisions: whether the patient should return "nest Wednesday" whether X-rays are needed, whether drugs should be prescribed, etc. This is particularly significant in relation to hospital care. The physician must certify the need for hospitalization, determine what procedures will be performed, and announce when the patient may be discharged. The patient may be consulted about some of these decisions, but in the main it is the doctor' s judgments that are final. Little wonder then that in the eyes of the hospital it is the physician who is the real "consumer. "As a consequence, the medical staff represents the "power center" in hospital policy and decision-making, not the administration. Although usually there are in this situation four identifiable participants, the physician, the hospital, the patient and the payer( generally an insurance carrier or government), the physician makes the essential decision for all of them. The hospital becomes an extension of the physicians; the payer generally meets most of the bona fide bills generated by the physician/hospital and for the most part, the patient's plays a passive role. In routine or minor illness or just plain worries, the patient's options are of course, much greater with respect to use and price. But in illnesses that are of some significance, such choice tends to evaporate. And it is for these illnesses that the bulk of the health care dollar is spent. We estimate that about 75 N 80 percent of health care expenditures are determined by physicians, not patients. For this reason, economy measures directed at patients or the general public are relatively ineffective.

单选题You should soon regain your appetite.