单选题Public policy and education efforts may help to do away with

单选题Sleeplessness Insomnia or sleeplessness is a common complaint of women as they enter into menopause. Insomnia means having trouble falling asleep or staying asleep or the feeling that your sleep was not adequate for you. For women who are having night sweats, their sleep is broken by frequent awakening and therefore not refreshing. Generally once the night sweats are controlled a normal sleep pattern returns. If it doesn't it may be, or have become chronic insomnia. How do you know? If you suffer from insomnia every night or most nights for a period of one month then you have chronic insomnia. If you're not having night sweats then it's time to look for other causes of sleeplessness. Depression and anxiety disorders are the most common causes of chronic insomnia. If you feel depressed you need to be checked by a qualified health care provider". Movement disorders such as restless leg syndrome are second on the list of insomnia for them; there are new medicines that may help. Other common causes are shift working, and pain. In up to 30% of people with chronic insomnia no cause can be identified. Medical treatment of these people has generally been with sleeping pills. It is estimated that 25% of the adult population in America took some type of medicines for sleep last year. It is generally agreed that sleeping pills should only be in the lowest dose and for the shortest possible time. Sleep hygiene is directed at changing bad sleep habits. The recommendations are: — Go to bed only when sleepy. — Do not wait up to a specified time. — Avoid caffeine and alcohol in the evening, etc.

单选题I am always conscious of my own shortcomings.A. awareB. ashamedC. anxiousD. surprised

单选题Breakfast Studies show that children who eat breakfast do better in school, It doesn"t take much further thought to believe that adults will feel better and perform better at work as well, Whether you work at home, on the farm, at the office, at school, or on the road, it is not a good idea to skip (故意略去) breakfast. If we don"t eat breakfast, we are likely to become fired when our brains and bodies run low on fuel. By mid-morning, a lot of us grab a cup of coffee, or wolf down a sugary candy bar to wake up again. This might work for a few minutes, but by lunchtime we are hungry, bad-tempered, and perhaps our mood might make us a little more likely to make unhealthy choices at lunch. Eating a good breakfast sets the tone for the rest of the day. People who eat breakfast are generally more likely to maintain a healthy weight. Many people believe that they will lose weight if they skip meals, but that isn"t a good idea. The body expects to be refueled a few times a day, so start with a healthy breakfast. A healthy breakfast should contain some protein (蛋白质) and some fiber (纤维). Protein can come from meat, eggs, beans, or soy (大豆). Fiber can be found in whole cereals (谷物), grains or in fruits. A good example of a healthy breakfast might be something simple like a hard boiled egg, an orange, and a bowl of whole grain cereal with soy milk.

单选题 阅读下面的短文，文中有15处空白，每处空白给出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。 Many people wrongly believe that when people reach old age,-their families place them in nursing homes. They are left in the{{U}} (51) {{/U}}of strangers for the rest of their lives. Their{{U}} (52) {{/U}}children visit them only occasionally, but more often, they do not have any regular visitors. The truth is that this idea is an unfortunate myth-an{{U}} (53) {{/U}}story. In fact, family members provide over 80 percent of the care{{U}} (54) {{/U}}elderly people need. Samuel Prestoon, a sociologist, studied{{U}} (55) {{/U}}the American family is changing. He reported that by the time the average American couple reaches 40 years of age, they have more parents than children{{U}} (56) {{/U}}, because people today live longer after an illness than people did years{{U}} (57) {{/U}}, family members must provide long term care. More psychologists have found that all caregivers{{U}} (58) {{/U}}a common characteristic: All caregivers believe that they are the best people for the job. In other words, they all felt that they{{U}} (59) {{/U}}do the job better than anyone else. Social workers{{U}} (60) {{/U}}caregivers to find out why they took{{U}} (61) {{/U}}the responsibility of caring for an elderly relative. Many caregivers believed they had obligation to help their relative. Some stated that helping others{{U}} (62) {{/U}}them feel more useful. Others hoped that by helping{{U}} (63) {{/U}}now, they would deserve care when they became old and{{U}} (64) {{/U}}. Caring for the elderly and being taken care of can be a mutually satisfying experience for everyone who might be{{U}} (65) {{/U}}.

单选题{{B}}第二篇{{/B}} Dorothea Dix left home at an early age-of her own free will-to live with her grand-mother. At fourteen, Dorothea was teaching school at Worcester, Massachusetts. A short time after she had begun teaching, she established a school for young girls in her grandparents' home. Stress was placed on moral character at Dorothea's school, which she conducted until she was thirty-three. She was forced to give up teaching at her grandparents' home, however, when she became ill. A few years of inactivity followed. In 1841 Dorothea began to teach again, accepting a Sunday school class in the East Cambridge, Massachusetts, jail. Here, she first came upon insane people locked up together with criminals. In those days insane people were treated even worse than criminals. There were only a few asylums(精神病院)in the entire country. Therefore jails, poorhouses, and houses of correction were used to confine the insane. Dorothea Dix made a careful investigation of the inhuman treatment of the insane. It was considered, unfeminine (不适合女性的)for a woman to devote herself to such work at this time. But this did not stop Dorothea Dix in her efforts to provide proper medical care for the insane. Gradually, because of her investigations, conditions were improved. More than thirty mental institutions were founded or re-established in the United Stated because of her efforts. Dorothea also extended her investigations to England and to other parts of Europe. During the Civil War, Dorothea served as superintendent(管理人)of women hospital nurses in the Union army. When the war was over, she returned to her work of improving conditions for insane people.

单选题He"s spent years cultivating knowledge of art.

单选题High Stress May Damage Memory According to a report issued in May 1998, elderly people who have consistently high blood levels of cortisol don't score as well on memory tests as their peers with lower levels of the stress hormone. What's more, high levels of cortisol are also associated with shrinking of the hippocampus, a region of the brain that plays a key role in learning and memory. The findings suggest that even cortisol levels in the normal, "healthy" range can actually acceIerate brain aging. The study results "now provide substantial evidence that long-term exposure to adrenal stress hormones may promote hippocampal aging in normal elderly humans", write Nada Porter and Philip Landfield of the University of Kentucky in Lexington in their editorial. Cortisol is a hormone released in response to stress by the adrenal glands, which sit on top of the kidneys. Over a 5 to 6-year period. Dr. Sonia Lupien and his colleagues measured 24-hour cortisol levels in 51 healthy volunteers, most of whom were in their 70s. Despite wide variation in cortisol levels, the participants could be divided into three subgroups: those whose cortisol progressively increased over time and was currently high (increasing/high); those whose cortisol progressively increased over time and was currently moderate (increasing/moderate); and subjects whose cortisol decreased, but was currently moderate (decreasing/moderate). The researchers tested the volunteers' memory on six people in the increasing/high category and five people in the decreasing/moderate group. The groups did not differ on tests of immediate memory, but the increasing/high cortisol group had other memory problems compared with those in the decreasing/moderate group. The researchers also found that the total volume of the hippocampus in those in the increasing/high group was 14% lower than those in the decreasing/moderate group, although there were no differences in other brain regions. The results suggest that " ... brain aging can be accelerated by levels of adrenal hormones that are not generally regarded as pathological and that variation within this normal range is related to variation in the rate of brain aging," write Porter and Landfield. "This further suggests that chronic stress may accelerate the worsening of hippocampus. /

单选题After the show, the crowd {{U}}poured {{/U}}out of the theatre.

单选题 27．If a person puts himself up above others in the dream，he may__________. 28．If a person dreams of being chased by others，he may__________. 29．If a person dreams of going over the edge of a cliff，he may__________. 30．If a person dreams of failing to do something in public，he may__________.

单选题First Self Contained Heart Implanted A patient on the brink of death has received the world"s first self-contained artificial heart—a battery powered device about the size of a softball that runs without the need for wires, tubes or hoses sticking out of the chest. Two surgeons from the University of Louisville implanted the titanium and plastic pump during a seven-hour operation at Jewish Hospital Monday. The hospital said the patient was "awake and responsive" Tuesday and resting comfortably. It refused to release personal details. The patient had been expected to die within a month without the operation, and doctors said they expected the artificial heart to extend the person"s life by only a month. But the device is considered a major step toward improving the patient"s quality of life. The new pump, called Abio Cor, is also a technological leap from the mechanical hearts used in the 1980s, which were attached by wires and tubes to bulky machinery outside the body. The most famous of those, the Jarvic-7, used air as a pumping device and was attached to an apparatus about the size of a washing machine. "I think it"s potentially a major step forward in the artificial heart development," said Dr. David Faxon, president of the American Heart Association. However, he said the dream of an implantable, permanent artificial heart is not yet a reality: "This is obviously an experimental device whose long-term success has to be demonstrated." Only about half of the 4, 200 Americans on a waiting list for donor hearts received them last year, and most of the rest died. Some doctors, including Robert Higgins, chairman of cardiology at the Medical College of Virginia in Richmond, said artificial hearts are unlikely to replace donor hearts. "A donor heart in a good transplant can last 15 to 30 years," he said. "It"s going to be hard to replace that with a machine." The Abil Cor has a 2-pound pumping unit, and electronic controls that adjust the pumping speed based on the body"s needs. It is powered by a small battery pack worn outside the body that transmits current through the skin.

单选题{{B}}第二篇{{/B}} Focus on preventing disease As we have seen, the focus of medical care in our society has been shifting from curing disease to preventing disease-especially in terms of changing our many unhealthy behaviors, such as poor eating habits, smoking, and failure to exercise. The line of thought involved in this shift can be pursued further. Imagine a person who is about the right weight, but does not eat very nutritious (有营养的) foods, who feels ok but exercises only occasionally, who goes to work every day, but is not an outstanding worker, who drinks a few beers at home most nights but does not drive while drunk, and who has no chest pains or abnormal blood counts, but sleeps a lot and often feels tired. This person is not ill. He may not even be at risk for any particular disease. But we can imagine that this person could be a lot healthier. The field of medicine has not traditionally distinguished between someone who is merely "not ill" and someone who is excellent health and pays attention to the body's special needs. Both types have simply been called "well". In recent years, however, some health specialists have begun to apply the terms "well" and "wellness" only to those who are actively striving to maintain and im prove their body's condition. Most importantly, perhaps, people who are well take active responsibility for all matters related to their health. Even people who have a physical disease or handicap (缺陷) may be "well", in this new sense, if they make an effort to maintain the best possible health they can in the face of their physical limitations. "Wellness" may perhaps best be viewed not as a state that people can achieve, but as an ideal that people can strive for. People who are well are likely to be better able to resist disease and to fight disease when it strikes. And by focusing attention on healthy ways of living, the concept of wellness can have a beneficial impact on the way in which people face the challenges of daily life.

单选题Harmless Revenge Revenge is one of those things that everyone enjoys. People don't like to talk about it, though. Just the same, there is nothing more satisfying or more rewarding than revenge. The purpose is not to harm your victims but to let them know that you are upset about something that they are doing to you. Careful plotting can provide you with relief from bothersome coworkers, gossiping friends, or nagging family members. Coworkers who make comments about the fact that you are always fifteen minutes late for work can be taken care of very simply. All you have to do is get up extra early one day. Before the sun comes up, drive to each coworker's house. Reach under the hood of your coworker's car and disconnect the center wire that leads to the distributor cap, the car will be unharmed, but it will not start, and your friends at work will all be late for work on the same day. If you're lucky, your boss might notice that you are the only one there and will give you a raise. Gossiping friends at school are also perfect targets for a simple act of revenge. A way to trap either male or female friends is to leave phony messages on their lockers. If the friend that you want to get is male, leave a message that a certain girl would like him to stop by her house later that day. With any luck, her boyfriend will be there. The girl won't know what's going on, and the victim will be so embarrassed that he probably won't leave his home for a month. When Morn and Dad and your sisters and brothers really begin to annoy you, harmless revenge may be just the way to make them quiet down for a while. The dinner table is a likely place. Just before the meal begins, throw a handful of raisins into the food. Wait about five minutes and, after everyone has begun to eat, cover your mouth with your hand and begin to make odd noises. When they ask you what the matter is, point to a raisin and yell, "Bugs!" They dump their food in the disposal, jump into the car, and head for McDonald's. That night, you'll have your first quiet, peaceful meal in along time. A well-planned revenge does not have to hurt anyone. The object is simply to let other people know that they are beginning to bother you.

单选题U.S. Eats Too Much Salt People in the United States consume more than twice the recommended amount of salt, raising their risk for high blood pressure, heart attacks and strokes, government health experts said on Thursday. They found nearly 70 percent ofU. S. adults are in high-risk groups that would benefit from a lower-salt diet of no more than 1,500 mg per day, yet most Consume closer to 3,500 mg per day. "It's important for people to eat less salt. People who adopt a heart-healthy eating pattern that includes a diet low in sodium (钠) and rich in potassium (钾) and calcium (钙) can improve their blood pressure," Dr. Darwin Labarthe of the Centers for Disease Control and Prevention said in a statement. "People need to know their recommended daily sodium limit and take action to reduce sodium intake ," Labarthe said. The study in CDC's weekly report on death and disease used national survey data to show that two out of three adults should be consuming no more than 1,500 mg of sodium per day because they are black or over the age of 40, which are considered high-risk groups. Yet studies show most people in the United States eat 3,436 mg of sodium per day, according to a 2005-2006 CDC estimate. Most of the sodium eaten comes from packaged, processed and restaurant foods. The CDC said it will join other agencies in the Health and Human Services department in working with major food manufacturers and chain restaurants to reduce sodium levels in the food supply. Nationwide, 16 million men and women have heart disease and 5.8 million are estimated to have had a stroke. Cutting salt consumption can reduce these risks, the CDC said.

单选题Her faith upheld her in times of sadness.

单选题Fermi Problem On a Monday morning in July, the world"s first atom bomb exploded in New Mexico desert. Forty seconds later, the shock waves reached the base camp where the Italian-American physicist Enrico Fermi and his team stood. After a mental calculation, Fermi announced to his team that the bomb"s energy had equated 10,000 tons of TNT. The bomb team was impressed, but not surprised. Fermi"s genius was known throughout the scientific world. In 1938 he had won a Nobel Prize. Four years later he produced the first nuclear chain reaction, leading us into the nuclear age. Since Fermi"s death in 1954, no physicist has been at once a master experimentalist(实验师) and a leading theoretician(理论学家). Like all virtuosos(大师), Fermi had a distinctive style. He preferred the most direct route to an answer. He was very good at dividing difficult problems into small, manageable bits talent we all can use in our daily lives. To develop this talent in his students, Fermi would suggest a type of question now known as a Fermi problem. Upon first hearing one of these, you haven"t the remotest notion of the answer, and you feel certain that too little information had been given to solve it. Yet when the problem is broken into sub-problems, each answerable without the help of experts or books, you can come close to the exact solution. Suppose you want to determine earth"s circumference without looking it up. Everyone knows that New York and Los Angeles are about 3,000 miles apart and that the time difference between them is three hours. Three hours is one-eighth of a day, and a day is the time it takes the planet to complete one rotation(旋转), so its circumference must be eight times 3,000 or 24,000 miles. This answer differs from the true value, 24902.45 miles, by less than four percent. Ultimately the value of dealing with everyday problems the way Fermi did lies in the rewards of making independent discoveries and inventions. It doesn"t matter whether the discovery is as important as determining the power of an atom or as small as measuring the distance between New York and Los Angeles. Looking up the answer, or letting someone else find it, deprives you of the pleasure and pride that accompany creativity, and deprives you of an experience that builds up self-confidence. Thus, approaching personal dilemmas as Fermi problems can become a habit that enriches your life.

单选题What Is Anthrax(炭疽)? 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 (60) 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 (63) 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 economy continued to exhibit signs of decline in September.

单选题I catch cold now and then .

单选题IQ-gene In the angry debate over how much of IQ comes from the genes that children inherit from parents and how much comes from experiences, one little fact gets overlooked: no one has identified any genes (other than those that cause retardation) that affect intelligence. So researchers led by Robert Plomin of London"s Institute of Psychiatry decided to look for some. They figured that if you want to find a smart gene, you should look in smart kids. They therefore examined the DNA of students like those who are so bright that they take college entrance exams four years early—and still score at Princeton-caliber levels. The scientists found what they sought. "We have" says Plomin, "the first specific gene ever associated with general intelligence." Plomin"s colleagues drew blood from two groups of 51 children each, all 6 to 15 years old and living in six counties around Cleveland. In one group, the average IQ is 103. All the children are white. Isolating the blood cells, the researchers then examined each child"s chromosome 6. Of the 37 landmarks on chromosome 6 that the researchers looked for, one jumped out: a form of gene called IGF2R occurred in twice as many children in the high-IQ group as in the average group—32 percent versus 16 percent. The study, in the May issue of the journal Psychological Science, concludes that it is this form of the IGF2R gene that contributes to intelligence. Some geneticists see major problems with the IQ-gene study. One is the possibility that Plomin"s group fell for "chopsticks fallacy". Geneticists might think they"ve found a gene for chopsticks flexibility, but all they"ve really found is a gene more common in Asians than, say, Africans. Similarly, Plomin"s IQ gene might simply be one that is more common in groups that emphasize academic achievement. "What is the gene that they"ve found reflects ethnicity?" asks geneticist Andrew Feinberg of Johns Hopkins University. "That alone might explain the link to intelligence, since IQ tests are known for being culturally sensitive and affected by a child"s environment." And Neil Risch of Standford University points out that if you look for 37 genes on a chromosome, as the researchers did, and find that one is more common in smarter kids, that might reflect pure chance rather than a causal link between the gene and intelligence. Warns Feinberg: "I would take these findings with a whole box of salt."