单选题Some animals pant and {{U}}sweat{{/U}} to speed evaporation of body moisture and thus cool themselves.

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；如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。 {{B}}Health Care in the US{{/B}} Health care in the US is well-known but very expensive. Paying the doctor's bill after a major illness or accident can cost hundreds of thousands of dollars. In the US, a person's company, not the government, pays for health insurance. Employers have contracts with insurance companies, which pay for all or part of employees' doctors' bills. The amount that the insurance company will pay out to a patient differs wildly. It all depends on what insurance the employer pays. The less the boss pays to the insurance company, the more the employee has to pay the hospital each time he or she gets sick. In 2004, the average worker paid an extra US$558 a year, according to a San Francisco report. The system also means many Americans fall through the cracks (遭遗漏). In 2004, only 61 per cent of the population received health insurance through their employers, according to the report. The unemployed, self-employed, part-time workers and graduated students with no jobs were not included. Most US university students have a gap between their last day of school and their first day on the job. Often, they are no longer protected by their parents' insurance because they are now considered independent adults. They also cannot buy university health insurance because they are no longer students. Another group that falls through the gap of the US system is international .students. All are required to have health insurance and cannot begin their classes without it. But exact policies (保险单) differ from school to school. Most universities work with health insurance companies and sell their own standard plan for students. Often, buying the school plan is required, but luckily it's also cheaper than buying direct from the insurance company.

单选题Continuous short buzzes on the telephone indicate that the line is busy after you dial the telephone number.

单选题In 1861, it seemed inevitable that the Southern states would break away from the Union.

单选题 A Gay Biologist Molecular biologist Dean Hamer has blue eyes, light brown hair and a good sense of humor. He smokes cigarettes, spends long hours in an old laboratory at the U.S. National Institute of Health, and in his free time climbs up cliffs and points his skis down steep slopes. He also happens to be openly, matter-of-fact gay. What is it that makes Hamer who he is? What, for that matter, accounts for the talents and traits that make up anyone's personality? Hamer is not content merely to ask such questions; he is trying to answer them as well. A pioneer in the field of molecular psychology, Hamer is exploring the role genes play in governing the very core of our individuality. To a remarkable extent, his work on what might be called the gay, thrill-seeking and quit-smoking genes reflects how own genetic predispositions. That work, which has appeared mostly in scientific journals, has been gathered into an accessible and quite readable form in Hamer's creative new book, Living with Our Genes. "You have about as much choice in some aspect of your personality," Hamer and coauthor Peter Copeland write in the introductory chapter, "as you do in the shape of your nose or the size of your feet." Until recently, research into behavioral genetics was dominated by psychiatrists and psychologists, who based their most compelling conclusions about the importance of genes on studies of identical twins. For example, psychologist Michael Bailey of Northwestern University famously demonstrated that if one identical twin is gay, there is about a 50% likelihood that the other will be too. Seven years ago, Hamer picked up where the twin studies left off, homing in on specific strips of DNA that appear to influence everything from mood to sexual orientation. Hamer switched to behavioral genetics from basic research, after receiving his doctorate from Harvard, he spent more than a decade studying the biochemistry of a protein that cells use to metabolize heavy metals like copper and zinc. As he was about to turn 40, however, Hamer suddenly realized he had learned as much about the protein as he cared to. "Frankly, I was bored," he remembers, "and ready for something new." Homosexual behavior, in particular, seemed ripe for exploration because few scientists had dared tackle such an emotionally and politically charged subject. "I'm gay," Hamer says with a shrug, "but that was not a major motivation. It was more of a question of intellectual curiosity—and the fact that no one else was doing this sort of research."

单选题Medicine depends on other fields for basic information, particularly some of their specializec branches. A. conventionally B. obviously C. especially D. inevitably

单选题Happy Marriage, Happy Heart Happily married people have lower blood pressure (51) unhappily married people or singles, a Brigham Young University study says. On the other hand, even having a supportive social network did not translate into a blood pressure benefit for singles or unhappily (52) people, according to the study. "There seem to be some unique health benefits from marriage. It's not just being married (53) benefits health-what's really the most protective of health is having a happy (54) ," study author Julianne Holt-Lunstad, a psychologist who specializes in relationships and health, said in a prepared statement. The study included 204 married and 99 (55) adults who wore portable blood-pressure monitors for 24 hours. The (56) recorded blood pressure at random intervals and provided a total of about 72 readings. "We wanted to capture participants' blood pressure doing whatever they normally (57) in everyday life. Getting one or two readings in a clinic is not really (58) of the fluctuations that occur throughout the day," Holt-Lunstad said. Overall, happily married people scored four points (59) on the blood pressure readings than single adults. The study also found that blood (60) among married people especially those in happy marriages (61) more during sleep than in single people. "Research has shown that people whose blood pressure remains high throughout the night are at (62) greater risk of heart disease than people whose blood pressure drops," HoltLunstad said. The study was published in the March 20 (63) of the journal Annals of Behavioral Medicine. The study also found that unhappily married adults have higher blood pressure than (64) happily married and single adults. Holt-Lunstad noted that married couples can encourage healthy habits in one (65) ,such as eating a healthy diet and having regular doctor visits. People in happy marriages also have a source of emotional support, she said.

单选题Mosquitoes generally breed in swampy areas.A. alwaysB. usuallyC. rarelyD. never

单选题His idea to solve the problem is really original .

单选题Polycarbonate Products Issues A line of water bottles that had become a symbol of environmental responsibility has been removed from the shelves of Canada"s leading outdoor gear retailer over concerns about a chemical used in its manufacture. The Mountain Equipment Co-op, which is based in Vancouver, British Columbia, removed the bottles, sold under the brand name Nalgene, and other polycarbonate containers from its 11 large-scale stores on Wednesday. The retailer said that it would not restock the bottles, which are made by Nalge Nunc International in Rochester, a unit of Thermo Fisher Scientific, until Health Canada completed a review of bisphenol-a, or B.P.A., a chemical used to make hard, transparent plastics as well as liners for food cans. "We"ve been following the B.P.A. issue for at least three years," said Tim Southam, a spokesman for Mountain Equipment. "The decision we"ve taken this week does not mean that polycarbonate products will never return to our stores. We"re just seeking some certainty about this chemical." Church and environmental groups in Canada have mounted campaigns against bottled water because of concerns about the huge amount of plastic used in containers. As a result, the reusable Nalgene bottles have become ubiquitous on college campuses and elsewhere. Polycarbonate plastic, which can only be produced by using B.P.A., creates bottles that are transparent and almost as hard as glass, but particularly shatter-resistant. Recently, however, the use of B.P. A.-based plastics in food containers has been questioned in Canada by Environmental Defence, a Toronto-based group. Environmentalists in the United States are also raising concerns about the chemical. Last year, San Francisco"s board of governors passed a local law banning the use of the chemical in children"s products. B.P.A. was removed from the ordinance before it went into effect, however, after an industry lawsuit. Critics point to studies dating back to 1936 showing that the chemical can disrupt the hormonal system. While there is little dispute about that, the plastics industry, supported by several studies from government agencies in Japan, North America and Europe，contends that polycarbonate bottles contain very little of the chemical and release only insignificant amounts of B.P.A. into the bodies of users. "Rarely has a chemical been the subject of such intense scientific testing and scrutiny, and still, important agencies across the globe agree that there is no danger posed to humans from polycarbonate bottles," Tom Cummins, the director of research and development at Nalge Nunc, said in a statement. Rick Smith, the executive director of Environmental Defence, said that a paper published by 38 scientists after a government-sponsored conference in the United States found that the lack of research on the effects of B.P.A. on humans was a concern that required further investigation. Steven G. Hentges, the executive director of the American Chemistry Council"s polycarbonate group, takes issue with that report"s worries and points to a separate expert panel report published by the United States Department of Health and Human Services last month. In its 396-page report, which looked only at the impact of B.P.A. on reproduction, the panel said it had "negligible concern" about the chemical"s effect on adult reproductive systems but raised some concerns about its impact on children and pregnant women.

单选题No one knew whether this expressed acceptance of his {{U}}fate{{/U}} or joy at his deliverance.

单选题It is the lack of money that has held up the progress in using replacement genes to cure cancer.

单选题Speech therapists divide their cases into common and complex. An example of a complex case is a person suffering from aphasia. This is the loss of the ability to under- stand and/or use speech. There are many causes of aphasia, including partial brain dam- age that leaves the individual with the physical ability to speak. If the individual is able to speak but does not, the therapist must determine the cause of such conduct. Often, speech therapists determine that problems are emotional and refer the individuals with such problems to psychologists or psychiatrists trained to help them. While a speech therapist is not trained to help persons with severe emotional disorders, the therapist does receive extensive training in such areas as anatomy(as it relates to speech, concentrating on the diaphragm, tongue, and palate), physics(particularly relating to sound), and language and communications. Some therapists take classes in elementary psychology as well. The speech therapist must be able to diagnose the type and severity of the speech defect, then prescribe a series of treatments. While some people with severe handicaps receive individual instruction, most patients are comfortable receiving group therapy with others who have the same problem. If a patient is found to have a physical handicap that is impeding his progress, he is sent to a doctor with whom the therapist works closely. Many therapists have a high success rate with their patients. No scientific studies have yet shown whether the intervention of the therapist was in fact the sole cause of the improvement of the patients, or whether time and maturity helped as well. A recent study has shown that persons who have not received speech therapy have often been "cured' of their problems merely by being around others without the problem. However, that same study showed that those few persons who were not treated by therapists had extremely low self-esteem and considered themselves " different" and "retarded". The therapists often are able to make the patients see that while they are different, the difference is not of their own making, that they have not done something wrong. Therapists try to reach children when they are very young, before they have had an opportunity to be teased by other children or made to feel they are "stupid". Therapists often work with whole families, encouraging the parents and siblings to listen to the patients, taking the time to help them feel they are an important part of the family, not just brushing them off because the effort of interpreting their speech is too great or time-consuming.

单选题She has proved that she can be relied on in a crisis.

单选题 阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 {{B}}What Is Anthrax (炭疽)?{{/B}} There's been a lot of talk about anthrax on the news lately. Some people are worried that anthrax may be connected to terrorist attacks or that terrorists may spread the germ that______(51) the disease. Federal officials and police are investigating this and taking______(52) to protect us. In the meantime, it's important not to panic over anthrax. The chances that you and your family______(53) at risk are very tiny. One of the ways you can feel better is to learn about anthrax. When you know what it is and______(54) you can get it, it doesn't seem quite as scary. So, what______(55) is anthrax? Here are the facts on anthrax: Anthrax is a bacterial infection caused by a germ. Although it's most common in farm ______(56), like sheep, cows, pigs, horses, and goats, there's a very small chance that people can get it, too. Anthrax spores (孢子) (a version of the germ in a protective shell that can live in the soil for years) cause the disease. People may get anthrax if they are exposed to anthrax______(57). But here's the important part: just being exposed to these spores doesn't mean that a person will get ______(58). For a person to get sick, he would have to breathe in thousands of these spores all the way into his______(59). Or he'd have to eat meat contaminated with anthrax or handle______(50) that has anthrax spores. This may sound scary, but even when a person comes______(61) contact with the spores, it's unlikely that he'll get sick. ______(62) the bacteria do not get into the skin, digestive tract, or lung, the disease won't develop. Anthrax is not spread from person to person the way the flu can spread from family member to______(83) member or classmate to classmate. Anthrax can almost always be successfully treated with antibiotics (抗生素). Anthrax is very rare. Until recently, anthrax wasn't even talked about because it was so rare — and it still______(64)! Even with all of the anthrax cases you are hearing about right now, a person's chances of getting anthrax are about the______(65) as they were before you heard about anthrax on the news — very, very low.

单选题The ambassador was given the book as a token of the government's regard for him.A. an estimationB. a shareC. a mementoD. a preview

单选题The local government decided to merge the two firms into a big one.

单选题We have to think very carefully before we take any action, because it's a very Userious/U situation we have encountered.

单选题Nobody has the right to ______ his thought on others.A. imposeB. effectC. influenceD. enforce

单选题 阅读下面这篇短文，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。 {{B}}A Pay Rise or Not?{{/B}} "Unless I get a rise, I'll have a talk with the boss, Henry Manley," George Strong said to himself. George liked his job and he liked the town he lived in, but his wife kept telling him that his pay was not enough to meet the needs of the family. That was why he was thinking of taking a job in Birmingham, a nearby city about 50 miles away. He had been offered a job in a factory there, and the pay was far better. George lived in Wyeford, a medium-sized town. He really liked the place and didn't like the idea of moving somewhere else, but if he took the job in Birmingham, he would have to move his family there. Henry Manley was the manager of a small company manufacturing electric motors. The company was in deep trouble because, among other reasons, the Japanese were selling such things at very low prices. As a result, Manley had to cut his own prices and profits as well. Otherwise he would not get any orders at all. Even then, orders were still not coming in fast enough, so that there was no money for raises (加工资) for his workers. Somehow, he had to struggle along and keep his best workers as well. He sighed. Just then the phone rang. His secretary told him that George Strong wanted to see him as soon as possible. Manley sighed again. He could guess what it was about. George Strong was a very young engineer. The company had no future unless it could attract and keep men like him. Manley rubbed his forehead (前额); his problems seemed endless.