单选题The new car at the motor-show was a very {{U}}unusual{{/U}} shape. A. rare g. common C. strange D. curious

单选题The story was touching .

单选题Bringing Nanotechnology to Health Care for the Poor Nanotechnology uses matter at the level of molecules and atoms. Researchers are finding different uses for particles with a length of one nanometer, or one-billionth of a meter. These include things like beauty products and dirt-resistant clothing. But one area where many experts believe nanotechnology holds great promise is medicine. Last week, speakers at a program in Washington discussed using nanotechnology to improve health care in developing countries. The program took place at the Woodrow Wilson International Center for Scholars. Peter Singer at the University of Toronto says a nanotechnology called quantum dots could be used to confirm cases of malaria. He says it could offer a better way than the traditional process of looking at a person's blood under a microscope. In poor countries, this process is often not followed. As a result, sick people may get treated for malaria even if they do not have it. Such misuse of medicines can lead to drug resistance. Quantum dots are particles that give off light when activated. Researchers are studying ways to program them to identify diseases by lighting up in the presence of a targeted molecule. Experts say nanotechnology shows promise not just for diagnosing diseases, but also for treating them. Piotr Grodzinski of the National Institutes of Health talked about how nanotechnology could make drugs more effective. He talked about cancer drugs already developed with nanotechnology. He says if a drug can target a cancer locally in the body, then much less of it might be needed, and that means lower side effects. Andrew Maynard is chief scientist for the Project on Emerging Nanotechnologies at the Woodrow Wilson Center. He noted that Brazil, India, China and South Africa are currently doing nanotechnology research that could help poor countries. But he also noted that there is some risk in using nano-materials. He says nanometer-sized particles behave differently in the body and the environment compared to larger particles. Experts say more investment in research is needed to better understand these risks.

单选题The news will {{U}}horrify {{/U}}everyone.

单选题All the following factors may increase cancer rates EXCEPT

单选题As he wanted to watch the tennis final of the Olympic Games, he left a pile of dishes unwashed in the kitchen.A. numberB. stackC. groupD. crowd

单选题A Health Profile A health profile is a portrait of all of the factors that influence your health. To draw your health profile, you will 1 what diseases run in your family, what health hazards you may be exposed to 2 work, how your daily 3 compares to the recommended standards, how much time per week you 4 exercising and what type of exercise you engage 5 , how stressful your work and family environments are, what kinds of illnesses you get regularly, and 6 or not you have any one of a number of addictions. 7 this portrait, you should have a checkup to determine how your blood, heart, and lungs are functioning. This checkup will serve 8 a baseline, to which you can then compare later tests. 9 this profile is thoroughly drawn, you can begin to think about setting health priorities based 10 your particular portrait. For example, if you drink two martinis every evening, have a high-stress 11 , are overweight, smoke a pack of cigarettes a day, and use marijuana occasionally on weekends, you should quit smoking first, followed 12 losing the excess weight, reducing the stress of your job, giving up your marijuana habit, and then finally giving some 13 to those martinis if you want to prevent first cancer, and then heart disease. Even for the youthful working person who has never been sick a day in his life, who is 14 excellent health, a good look at all health habits and at work and home environments may suggest changes that will 15 him in the future.

单选题His sole motive was to make her happy.

单选题 下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。 {{B}} Middle Age: A Low Point for Most{{/B}} People around the globe hit the height of their misery and depression in{{U}} (51) {{/U}}age, a new international study suggests. The finding by British and American researchers was based on an analysis of well-being among approximately 2 million people in 80 nations. With few exceptions, the observation appears to apply across the board, regardless{{U}} (52) {{/U}}gender (性别), culture, geography, wealth, job history, education, and marriage or parental status. "The scientific fact seems to be that happiness and positive mental health follow a giant 'U'{{U}}(53) {{/U}}through life," said study author Andrew J. Oswald, a professor of economics at Warwick University in Warwickshire, England. "For the average person, it's high when you're 20, and then it slowly falls and bottoms out{{U}} (54) {{/U}}your 40s. But the good news is that your{{U}} (55) {{/U}}health picks up again, and eventually gets back to the high levels of our youth."The finding was {{U}}(56) {{/U}}on the pooling of several different sources of happiness data, including: two multi-decade happiness/satisfaction surveys (first launched in the 1970s), involving about 500,000 American and Western European men and women; four rounds of the 80-nation "World Values Survey"{{U}} (57) {{/U}}between 1981 and 2004 in North America, Eastern and Western Europe, Asia, Africa, Australia, and Central and South America; and a 2004-2007 survey{{U}} (58) {{/U}}nearly 1 million Britons. The bottom-line: For most people throughout the world, the highest probability for depression striking is around 44 years of{{U}} (59) {{/U}}. In the United States, however, some as-yet unexplained{{U}} (60) {{/U}}differences were observed ,with happiness among men dipping the most in their early 50s,whereas women hit their nadir (最低点) around the age of 40. The researchers cautioned that cheerful people tend to live longer than unhappy{{U}} (61) {{/U}}—a fact that might have skewed (使偏斜) the overall finding. But they also suggested that evidence of a happiness{{U}} (62) {{/U}}might simply reflect a midlife choice to give up long-held but no longer tenable (守得住的), aspirations(志向), follwed by a senior's sense of gratitude for having successfully endured{{U}} (63) {{/U}}others did not. "That said, some might find it helpful simply to understand the general{{U}} (64) {{/U}}of mental health as they go through their own life," said Oswald. "It might be useful for people to realize that if they are{{U}} (65) {{/U}}in their 40s this is normal. It is not exceptional. And just knowing this might help."

单选题Exercise Lowers Employers" Health Costs Companies can save millions in health-care costs simply by encouraging their employees to exercise a little bit, researchers reported on Friday. They said obese (肥胖的) employees had higher health-care costs, but lowered those expenses by exercising just a couple of times a week — without even losing any weight. Feifei Wang and colleagues at the University of Michigan studied 23,500 workers at General Motors. They estimated that getting the most sedentary (惯于久坐的) obese workers to exercise would have saved about $790,000 a year, or about 1.5 percent of health-care costs for the whole group. Company-wide, the potential savings could reach $7.1 million per year, they reported in the Journal of Occupational and Environmental Medicine. Of the whole group of workers, about 30 percent were of normal weight, 45 percent were overweight (超重的), and 25 percent were obese. Annual health-care costs averaged $2,200 for normal weight, $2,400 for the overweight, and $2,700 for obese employees. But among workers who did no exercise, health-care costs went up by at least $100 a year, and were $3,000 a year for obese employees who were sedentary. But adding two or moredays of light exercise — at least 20 minutes of exercise or work hard enough to increase heart rate and breathing — lowered costs by on average $500 per employee a year, the researchers found. "This indicates that physical activity behavior could reduce at least some of the harmful effects of excess body fat, and in consequence, help lower the health-care costs," Wang and colleagues wrote.

单选题Examination papers of the class were marked {{U}}without bias{{/U}}.

单选题Which of the following can help a person quit smoking?

单选题When he arrived home, he deposited his coat on the door.

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}} Stress Can Make You Sick{{/B}} Scientists are now studying a new field of research which is called psychoimmunology(心理免疫学). It is based on the idea {{U}}(51) {{/U}} people who are depressed(抑郁) or have a lot of stress are more likely to become sick. Researchers have recently found a connection between diseases and stressful situations. To test this theory scientists are trying to find a link {{U}}(52) {{/U}} the brain and the immune(免疫)system. The immune system in our bodies fights the bacteria and viruses which cause disease. Therefore, {{U}}(53) {{/U}} or not we are likely to get various diseases depends on how {{U}}(54) {{/U}} our immune system works. Biologists {{U}}(55) {{/U}} to think that the immune system was a separate, {{U}}(56) {{/U}} part of our bodies. Recently, however, they have found that our brain can affect our immune system. This discovery indicates that there may {{U}}(57) {{/U}} a connection between emotional factors, such as stress or depression, and illness. Although many doctors in the past {{U}}(58) {{/U}} a connection between emotional factors and disease, they had no proof. Scientists have only recently discovered {{U}}(59) {{/U}} the brain and the immune system function. Before this, no one could see a link between them. As a result, medical science never {{U}}(60) {{/U}} considered the idea that psychological factors could {{U}}(61) {{/U}} disease. Several recent studies {{U}}(62) {{/U}} a connection between stress and illness. For instance, researchers went to an American military school to study the students. By studying the students' blood, they found that many were {{U}}(63) {{/U}} with a virus which causes mononucleosis(单核细胞增多症), a common glandular (腺体的) disease. Of the infected students, only 5 percent actually became ill. The sick students had a lot of academic {{U}}(64) {{/U}} and wanted to achieve, but they were not very good students. In a similar study, researchers studied a group of student nurses. They focused {{U}}(65) {{/U}} cold sores, which are also caused by a common virus. Many student nurses carried the virus in their blood, but few of these infected nurses actually developed cold sores.

单选题According to Campbell, the most effective way to promote health and prevent diseases is

单选题You will get to the school more quickly if you take this {{U}}track{{/U}} across the fields.

单选题Silent and Deadly Transient ischemic attacks (TIAs), or ministrokes, result from temporary interruptions of blood flow to the brain. Unlike full strokes, they present symptoms lasting anywhere from a few seconds to 24 hours. Rarely do they cause permanent neurological damage, but they are often precursors of a major stroke. "Our message is quite clear," says Dr. Robert Adams, professor of neurology at the Medical College of Georgia in August. "TIAs, while less severe than strokes in the short term, are quite dangerous and need a quick diagnosis and treatment as well as appropriate follow-up to prevent future injury. " Unfortunately, ministrokes are greatly underdiagnosed. A study conducted for the National Stroke Association indicates that 2.5% of all adults aged 18 or older (about 4.9 million people in the U. S. ) have experienced a confirmed TIA. An additional 1.2 million Americans over the age of 45, the study showed, have most likely suffered a ministroke without realizing it. These findings suggest that if the public knew how to spot the symptoms of stroke, especially ministrokes. and sought prompt medical treatment, thousands of lives could be saved and major disability could be avoided. The problem is that the symptoms of a ministroke are often subtle and passing. Nonetheless, there are signs you can look out for: Numbness or weakness in the face, arm or leg, especially on one side of the body. ●Trouble seeing in one or both eyes. ●Confusion and difficulty speaking or understanding. ●Difficulty walking, dizziness or loss of coordination. ●Severe headache with no known cause. Along with these symptoms, researchers have identified some key indicators that increase your chances of having a full-blown stroke after a TIA: if you're over 60, have experienced symptoms lasting longer than 10 minutes, feel weak and have a history of diabetes. As with many diseases, you can help yourself by changing your lifestyle. The first things you should do are quit smoking, limit your intake of alcohol to no more than a drink or two a day and increase your physical activity. Even those who suffer from high blood pressure or diabetes can improve their odds — and minimize complications if they do have a stroke - by keeping their - illness under control. If you experience any of the symptoms, your first call should be to your doctor. It could be the call that saves your life.

单选题Gardner thinks that his theory has a ________ .

单选题{{B}}第三篇{{/B}} No one knows exactly how many disabled people there are in the world, but estimates suggest the figure is over 450 million. The number of disabled people in India alone is probably more than double the total population of Canada. In the United Kingdom, about one in ten people have some disability. Disability is not just something that happens to other people: as get older, many of us will become less mobile, hard of hearing or have failing eyesight. Disablement can take many forms and occur at any time of life. Some people are born with disabilities. Many others become disabled as they get older. There are many progressive disabling diseases. The longer time goes on, the worse they become. Some people are disabled in accidents. Many others may have a period of disability in the form of a mental illness. All are affected by people's attitude towards them. Disabled people face many physical barriers. Next time you go shopping or to work or visit friends, imagine how you would manage if you could not get up steps, or on to buses and trains. How would you cope if you could not see where you were going or could not hear the traffic? But there are other barriers: prejudice can be even harder to break down and ignorance inevitably represents by far the greatest barrier of all. It is almost impossible for the able-bodied to fully appreciate what the severely disabled go through, so it is important to draw attention to these barriers and sow that it is the individual person and their ability, not their disability, which counts.

单选题Relief workers were {{U}}shocked{{/U}} by what they saw. A. moved B. touched C. surprised D. worried