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单选题{{U}}Adolescence{{/U}} tends to be the most important for one's world outlook.
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单选题I turned down his invitation to the party since I had to finish my homework that night.A. declinedB. sentC. acceptedD. received
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单选题The book made a great impact on its readers.
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单选题The project required ten years of diligent research.
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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。 Studies Show U.S. Spending Doesn't Get Best Health The United States may spend twice as much on health care as other rich countries but it is not getting results to match, according to studies released on Tuesday. But in the study of five wealthy countries, published in the journal Health Affairs, researchers found no single nation had clearly the worst or best health care system. Gerard Anderson at Johns Hopkins University's school of public health and colleagues came up with a list of 21 health fields they could evenly compare across the five countries--Australia, Canada, Britain, New Zealand and the United States. "None of the five countries is consistently the best or the worst on all 21 indicators. " Anderson said during a telephone briefing for reporters. "If you are looking for the place to get the best care. there isn't a single place. Every country has at least one indicator where it scores the best of the five countries and each country has at least one indicator(指标) where it scores the worst of the five countries. " But,he said, the United States is not getting value for money. "The United States should be particularly concerned about these results, given that we spend twice as much on health care as any other country. So spending more doesn't necessarily result in better outcomes. " Anderson's group of international health experts sponsored by The Commonwealth (联邦)Fund spent five years working on the study, getting the latest possible data from the five countries on areas such as breast cancer and leukemia (白血病) survival, suicide rates, death rates from asthma (哮喘 ), vaccination (种痘) rates and cancer screening.
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单选题First Aid First aid is emergency care for a victim of sudden illness or injury until more skillful medical treatment is available. It may save a life or improve certain vital signs including pulse, temperature, a clear airway (气道), and breathing. In minor emergencies, first aid may prevent a victim's condition from turning worse and provide relief from pain. First aid must be administered as quickly as possible. In the case of the critically injured, a few minutes can make the difference between complete recovery and loss of life. First-aid measures depend upon a victim's needs and the provider's level of knowledge and skill. Knowing what not to do in an emergency is as important as knowing what to do. Improperly moving a person with a neck injury, for example, can lead to permanent spinal (脊柱的) injury and paralysis (瘫痪). Despite the variety of injuries possible, several principles of first aid apply to all emergencies. The first step is to cal*l for professional medical help. The victim, if conscious, should be reassured that medical aid has been requested, and asked for permission to provide any first aid. Next, assess the scene, asking other people or the injured person's family or friends about details of the injury or illness, any care that may have already been given, and preexisting conditions such as diabetes (糖尿病) or heart trouble. The victim should be checked for a medical bracelet (手镯) or card that describes special medical conditions. Unless the accident scene becomes unsafe or the victim may suffer further injury, do not move the victim. First aid requires rapid assessment of victims to determine whether life-threatening conditions exist. One method for evaluating a victim's condition is known by the acronym (首字母缩写语) ABC, which stands for: A - Airway: is it open and clear? B - Breathing: is the person breathing? Look, listen, and feel for breathing. C - Circulation: is there a pulse? Is the person bleeding externally? Check skin color and temperature for additional indications of circulation problems.
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单选题A dentist may decide to extract the tooth to prevent recurrent trouble.
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单选题He talks tough but has a tender heart.
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单选题We {{U}}consume{{/U}} a lot more than we are able to produce.
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单选题Mary has {{U}}blended{{/U}} the ingredients. A. made B. mixed C. cooked D. eaten
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单选题As the headmaster made a long speech, the ceremony was {{U}}prolonged{{/U}} by ten minutes. A. quickened B. enlarged C. enriched D. lengthened
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单选题Play Play is the principal business of childhood, and in recent years research has shown the great importance of play in the development of a human being. From earliest infancy, every child needs opportunity and the right materials for play, and the main tools of play are toys. Their main function is to suggest, encourage and assist play. To succeed in this they must be good toys, which children will play with often, and will come back to again and again. Therefore it is important to choose suitable toys for different stages of a child"s development. In recent years research on infant development has shown that the standard a child is likely to reach, within the range of his inherited abilities, is largely determined in the first three years of his life. So a baby"s ability to profit from the right play materials should not be underestimated. A baby who is encouraged and stimulated, talked to and shown things and played with, has the best chance of growing up successfully. In the next stage, from three to five years old, curiosity knows no bounds. Every type of suitable toy should be made available to the child, for trying out, experimenting and learning, for discovering his own particular ability. Bricks and jigsaws (七巧板) and construction toys; painting, scribbling (涂鸦) and making things; sand and water play; toys for imaginative and pretending play; the first social games for learning to play and get on with others. But the third stage of play development—from five to seven or eight years—the child is at school. But for a few more years play is still the best way of learning, at home or at school. It is easier to see which type of toys the child most enjoys. Until the age of seven or eight, play and work mean much the same to a child. But once reading has been mastered, then books and school become the main source of learning, Toys are still interesting and valuable, they lead on to new hobbies, but their significance has changed—to a child of nine or ten years, toys and games mean, as to adults, relaxation and fun.
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单选题Help Your Child Become a Reader Encouraging early reading skills can build a path to a lifelong (终身的) love of reading and can help your child get a head start in school. While reading to your child is still the most important thing you can do to build reading skills, there are many techniques that can help. Make reading fun. Play games with your child as you read. Many traditional children's games can be adapted to encourage reading skills. While reading or during play' tell your child, "I spy with my little eye, something that begins with the letter b." Help the child find something on the page or in the room that begins with that letter. For example, "I see a barn." This can also be used to teach beginning letter sounds. "I spy with my little eye. Something that begins with the sounds." Help the child find a word that begins with the "s" sound. "In this variation on the popular game instruct the child that," Simon says, "point to something that starts with the letter n." The child can then find an object in the room or a body part, such as the nose, that starts with the letter presented. This can also be used to teach beginning sounds. Make a game out of rhyming (押韵)words by making up silly words to rhyme with the child's name or favorite toys. This sets the stage for rhyming real words by showing the child the similarities of sounds. As the child masters making up the words, begin rhyming real words to one another. Tips to raise a successful reader: Put books in places where the child plays. If books are easily accessible, children are more likely to pick them up. Let children "read to you" by looking at pictures. Making up stories to go along with illustrations helps children discover how words relate to pictures. Take books along on trips or even short visits to the doctor's office or grocery store. Have children help you shop. Reading grocery lists and looking for specific items helps build sight vocabulary.
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单选题Water is one of the most abundant but also one of the most wanted substances on Earth.A. ampleB. multipleC. adequateD. plentiful
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单选题 Car Thieves Could Be Stopped Remotely (远程) Speeding off (超速行驶) in a stolen car, the thief thinks he has got a great catch. But he is in a nasty surprise. The car is fitted with a remote immobilizer (使车辆不能调动的装置), and a radio signal from a control center miles away will ensure that once the thief switches the engine {{U}} {{U}} 1 {{/U}} {{/U}}, he will not be able to start it again. For now, such devices {{U}} {{U}} 2 {{/U}} {{/U}}only available for fleets of trucks and specialist vehicles used on construction sites. But remote immobilization technology could soon start to trickle (慢慢地移动) down to ordinary cars, and {{U}} {{U}} 3 {{/U}} {{/U}}be available to ordinary cars in the UK {{U}} {{U}} 4 {{/U}} {{/U}}two months. The idea goes like this. A control box fitted to the car incorporates {{U}} {{U}} 4 {{/U}} {{/U}}miniature cellphone (移动电话,手机), a microprocessor and memory, and a GPS satellite positioning receiver. {{U}} {{U}} 6 {{/U}} {{/U}}the car is stolen, a coded cellphone signal will tell the unit to block the vehicle's engine management system and prevent the engine {{U}} {{U}} 7 {{/U}} {{/U}}restarted. There are even plans for immobilizers {{U}} {{U}} 8 {{/U}} {{/U}}shut down vehicles on the move, though there are fears over the safety implications of such a system. In the UK, an array of technical fixes is already making {{U}} {{U}} 9 {{/U}} {{/U}}harder for car thieves. "The pattern of vehicles crime has changed," says Martyn Randall of Thatcham, a security research organization based in Berkshire that is funded in part {{U}} {{U}} 10 {{/U}} {{/U}}the motor insurance industry. He says it would only take him a few minutes to {{U}} {{U}} 11 {{/U}} {{/U}}a novice (新手,初学者) how to steal a car using a bare minimum of tools. But only if the car is more than 10 years old. Modern cars are a far tougher (艰苦的) proposition (任务), as their engine management computer will not {{U}} {{U}} 11 {{/U}} {{/U}}them to start unless they receive a unique ID code beamed out by the ignition (点火) key. In the UK, technologies like this {{U}} {{U}} 13 {{/U}} {{/U}}achieve a 31 percent drop in vehicle-related crime since 1997. But determined criminals are still managing to find other ways to steal cars. Often by getting hold of the owner's keys in a burglary (盗窃). In 2000,12 percent of vehicles stolen in the UK were taken using the owner's keys double the previous year's figure. Remote-controlled immobilization system would {{U}} {{U}} 14 {{/U}} {{/U}}a major new obstacle in the criminal's way by making such thefts pointless. A group that includes Thatcham, the police, insurance companies and security technology firms have developed standards for a system that could go on the market sooner than the {{U}} {{U}} 15 {{/U}} {{/U}}expects.
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单选题Until the late nineteenth century, there was no uniform system of time-keeping in the United States.
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单选题A ship was reported to be in {{U}}distress{{/U}} a few miles out at sea.
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单选题The love of money is the root of all evil. A. result B. cause C. end D. force
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单选题 Mothers and matchmakers(媒人) have always known that not being married is a definite health hazard. But when a team of researchers from the University of California, San Francisco, reported a few weeks ago that middle-aged (中年的) men without wives were actually twice as likely to die during a 10-year span(全长) as men with wives, the espoused and the spouseless alike stopped to take notice. It was the kind of news that swept through offices and watering holes-and it made people feel smug(自鸣得意的) or anxious, depending on their circumstances. Now the researchers who conducted the study are trying to find out what accounted for(说明,解释) the dramatic differences in survival rates. The investigators, headed by UCSF associate professor of epidemiology arid biostatistics(生物统计学) Maradee A. Davis, had set out to examine the effect of various living arrangements on mortality. Because of the buffering social support marriage is known to provide, Davis and her colleagues fully expected to find that men and women dwelling alone fared(生活,进展) worst in survival rates. It came as some surprise, however, that in their study population, subjects who shared living quarters with people other than a spouse had the same lower survival rates as those who lived by themselves. "The critical factor, "Davis says, "seems to be the presence of a spouse." The lower survival rates for the spouseless were found primarily in men who were widowed, separated or divorced, rather than in those who had never been married. Davis and her colleagues have already eliminated certain health factors as causes of higher mortality by adjusting their data to discount the effects of smoking, alcohol consumption, obesity and lack of exercise. Now they will look more closely at a variety of other considerations, such as blood pressure, cholesterol levels and chronic illnesses. Sex roles: While many middle-aged men now know the difference between a cheese grater and a garlic press, nutrition may still account for some of the California study's findings. Previous research by Davis's team showed that unmarried men even if they lived with other people ate less healthy diets than married men. "Traditional sex roles have meant that men aren't as well informed as women about nutritional shopping and food preparation. "says Davis. Emotional and social factors probably also played a role in higher mortality among the spouseless men. The San Francisco researchers will examine a randomly selected subgroup of their study population for more detailed medical data, and they'll look at a trait(特征) they call "general well-being. "This focuses on subjectively reported feelings and moods, rather than specific psychological symptoms. The researchers will analyze questionnaires that asked how frequently the men felt worried, nervous or poorly rested. But the team will also look at the causes of death; if the men without wives show higher rates of suicide or fatal accidents, it's likely that emotional stress contributed to(可助于, 促使)their higher mortality rate. Davis has already discovered that the married men reported a significantly higher level of well-being than those who weren't married. So perhaps the explanation for their longer survival isn't really so complicated. Because they are cared for by nurturing wives, they just plain feel happier than the other guys do. And what better reason than for staying alive?
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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 Debate over the Use of Renewable Energy Amusable of Rockefeller University in New York, US says the key renewable (可再生的) energy sources, including sun, wind and bibfuls, would all require vast amounts of land if developed up to large scale production—unlike nuclear power. That land would be far better{{U}} (51) {{/U}}alone, he says. Renewable look{{U}} (52) {{/U}}when they are quite small. But if we start producing renewable energy on a large{{U}} (53) {{/U}}, the fallout (结果) is going to be horrible. Amusable draws his conclusions by analyzing the amount of energy that renewable natural gas and nuclei (原子核) can{{U}} (54) {{/U}}in terms of power per square meter of land used. Moreover, he claims that{{U}} (55) {{/U}}renewable energy use increases this measure of efficiency will decrease as the best land for wind, bibfuls, and solar power gets used up. Solar power is much more{{U}} (56) {{/U}}than bibful in use but it would still{{U}} (57) {{/U}}150 square kilometers in terms of the area of land of photovoltaic (光电的) cells to match the energy production of the 1000 MW nuclear plant. In another example, he says{{U}} (58) {{/U}}the 2005 US electricity demand via wind need 780,000 square kilometers,an area the{{U}} (59) {{/U}}of Texas power alone. However, several experts are highly critical of Amusable's{{U}} (60) {{/U}}. John Turner of the US government's National Renewable Energy Laboratory says that even if the US got all of its{{U}} (61) {{/U}}from solar energy, it would still need less than half the amount of land that has been{{U}} (62) {{/U}}highways. Further, it need not{{U}} (63) {{/U}}up additional land. The US could get a quarter of its energy just from covering rooftops of existing buildings, he says. According to Turner, the same" dual use" also{{U}} (64) {{/U}}to wind power. The footprint for wind is only 5% of the land that it{{U}} (65) {{/U}}. Farmers can still farm the land that the turbines are on. Turner says looking solely at land use is an oversimplification of the issue.
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