单选题It seems highly unlikely that she will pass the exam.

单选题The whole neighborhood has been equipped with facilities for recycling household refuse.

单选题You may assess a victim's condition by all the following EXCEPT

单选题2. "Don't Drink Alone" Gets New Meaning In what may be bad news for bars and pubs, an European research group has found that people drinking alcohol outside of meals have a significantly higher risk of cancer in the mouth and neck than do those taking their libations (饮酒) with food. Luigino Dal Maso and his colleagues studied the drinking patterns of 1,500 patients from four cancer studies and another 3,500 adults who had never had cancer. After the researchers accounted for the amount of alcohol consumed, they found that individuals who downed a significant share of their alcohol outside of meals faced at least a 50 to 80 percent risk of cancer in the oral cavity (口腔), pharynx (咽), and esophagus (食道), when compared with people who drank only at meals. Consuming alcohol without food also increased by at least 20 percent the likelihood of laryngeal (喉) cancer. "Roughly 95 percent of cancers at these four sites traced to smoking or drinking by study volunteers," Dal Maso says. The discouraging news his team reports, is that drinking with meals didn' t eliminate cancer risk at any of the sites. For their new analysis, the European scientists divided people in the study into four groups, based on how many drinks they reported having in an average week. The lowest - intake group included people who averaged up to 20 drinks a week. The highest group reported downing at least 56 servings of alcohol weekly for an average of eight or more per day. Cancer risks for the mouth and neck sites rose steadily with consumption even for people who reported drinking only with meals. For instance, compared with people in the lowest - consumption group, participants who drank 21 to 34 alcohol servings a week at least doubled their cancer risk for all sites other than the larynx. If people in these consumption groups took some of those drinks outside meals, those in the higher consumption group at least quadrupled (翻两番) their risk for oral cavity and esophageal cancers. People in the highest- consumption group who drank only with meals had 10 times the risk of oral cancer, 7 times the risk of pharyngeal cancer, and 16 times the risk of esophageal cancer compared with those who averaged 20 or fewer drinks a week with meals. In contrast, laryngeal cancer risk the high - intake, with - meals - only group was only triple that in the low - intake consumers who drank with meals. "Alcohol can inflame tissues (组织). Over time, that inflammation can trigger cancer. " Dal Maso says. He suspects that food reduced cancer risk either by partially coating digestive - tract tissues or by scrubbing alcohol off those tissues. He speculates that the reason laryngeal risks were dramatically lower for all study participants traces to the tissue' s lower exposure to alcohol.

单选题Attitudes to mental illness have Ushifted/U in recent years.

单选题Adaptation of Living Things Certain animals and plants develop characteristics that help them cope with their environment better than others of their kind. This natural biological process is called adaptation. Among the superior characteristics developed through adaptation are those that may help in getting food or shelter, in providing protection, and in producing and protecting the young. That results in the evolution of more and more organisms(生物体) that are better fitted to their environments . Each living thing is adapted to its way of life in a general way, but each is adapted especially to its own distinct class. A plant, for example, depends upon its roots to fix itself firmly and to absorb water and inorganic chemicals(无机物). It depends upon its green leaves for using the sun"s energy to make food from inorganic chemicals. These are general adaptations, common to most plants. In addition, there are special adaptations that only certain kinds of plants have. Many animals have adaptations that help them escape from their enemies. Some are hidden by their body color or shape, and many look like a leaf or a little branch. The coats of deer are colored to mix with the surroundings. Many animals have the ability to remain completely still when an enemy is near. Organisms have a great variety of ways of adapting. They may adapt in their structure, function, and genetics; in their development and production of the young; and in other respects. An organism may create its own environment, as do warm-blooded mammals (哺乳动物), which have the ability to adjust body heat exactly to maintain their ideal temperature despite changing weather. Usually adaptations are an advantage, but sometimes an organism is so well adapted to a particular environment that if conditions change, it finds it difficult or impossible to readapt to the new conditions.

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。 Dyslexia(阅读障碍) As many as 20% of all children in the United States suffer from some form of the learning disorder called dyslexia. Experts on dyslexia say that the problem is not a disease. They say that persons with dyslexia use information in a different way. One of the world's great thinkers and scientists, Albert Einstein was dyslexic. Einstein said that he never thought in words the way that most people do. He said that he thought in pictures instead. The American inventor Thomas Edison was also dyslexic. Dyslexia first was recognized in Europe and the United States more than 80 years ago. Many years passed be fore doctors discovered that persons with the disorder were not mentally slow or disabled. The doctors found that the brains of persons with dyslexia are different. In most people, the left side of the brain the part that controls language is larger than the right side. In persons with dyslexia, the right side of the brain is bigger. Doctors are not sure what causes this difference. However, research has shown that dyslexia is more common in males than in females, and it is found more often in persons who are left handed. No one knows the cause of dyslexia, but some scientists believe that it may result from chemical changes in a baby's body long before it is born. They are trying to find ways to teach per sons with dyslexia. Dyslexic persons think differently and need special kinds of teaching help. After they have solved their problems with language, they often show themselves to be especially intelligent or creative.

单选题Parents should realized that "example is better than {{U}}precept{{/U}}".

单选题Don"t hazard your reputation by supporting his joint venture with the gay from Los Angels.

单选题This is not typical of English, but is a feature of the Chinese language.

单选题The book provides a concise analysis of the country"s history.

单选题He felt at a loss when he stayed with his aunt.A. lostB. confusedC. wordedD. satisfied

单选题The physicians in a hospital are less important than the nursing staff.

单选题Gary Finkle had his spinal cord(脊髓)severely injured in a swimming-pool accident seven years ago. A heavy-set, bearded man of 27, he is one of thousands of Americans who have lost virtually all feeling and movement from their shoulders down. He lives with his wife, Micky, and a female monkey named Jo outside the village of Andes, N.Y. Gary is a participant in a remarkable enterprise called Helping Hands: Simian Aides for the Disabled. The nonprofit organization supplies the disabled with trained monkeys that reduce the disabled person's dependency on family, friends and hired attendants. Using his mouth, Gary controls a small laser pointer mounted on his wheelchair. With it, he directs Jo to change books or magazines in his reading stand or to get him tapes for the cassette player. She brings him drinks from a refrigerator and clears away empties. When asked, Jo will fetch the remote control for the TV and place it on Gary's working table where he can operate it with his mouth-stick. The mouth-stick is a quadriplegic's(瘫痪者)primary tool. It can be used for practically everything: turning the pages of a book, dialing the telephone, changing channels on the TV, working at a typewriter or computer. If Gary's mouth-stick drops to the floor. Jo will pick it up and gently reinsert it into his mouth. "I can't imagine living without her," Gary says. He will always need human assistance for such things as getting in and out of bed, bathing or changing his clothes. But having Jo lessens his reliance on Micky, enabling her to do things in town without worrying about her husband's welfare.

单选题The two parties finally agreed to collaborate with each other.A. operateB. conductC. leadD. cooperate

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}}.