单选题We are sure that he will get over his illness.

单选题The book took ten years of thorough research.

单选题The oscillator was easier to use, more {{U}}stable{{/U}}, and less expensive than others available at the time.

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。 World Heart Day Sunday was World Heart Day. The World Heart Federation and its member groups in more than one hundred countries organized the celebrations. The World Health Organization and other United Nations agencies provided support for the {{U}}(51) {{/U}}. World Heart Day was first observed six years {{U}}(52) {{/U}}. Organizers proposed the event as a way to help reduce the spread of heart disease. The World Heart Federation says heart {{U}}(53) {{/U}} kills seventeen million people each year. The group urges people to be active and have a good, healthy diet. It also warns {{U}}(54) {{/U}} activities known to increase a person's risk of heart attack or stroke. Some of the warnings are directed at children. The World Heart Federation says about twenty-two million boys and girls under the age of five are obese--severely overweight. Children are normally energetic and active. {{U}}(55) {{/U}} , two thirds of all children are not active enough. Such children greatly {{U}}(56) {{/U}} their risk of becoming obese. They also increase their-- {{U}}(57) {{/U}} of developing heart disease or other disorders. One message of World Heart Day is to eat right. Children {{U}}(58) {{/U}} eat a healthy and balanced diet. Also, limit sugary drinks, sweets and eating between meals. The World Heart Federation urges parents to keep their children {{U}}(59) {{/U}}. It says physical exercise helps to decrease the risk of obesity and {{U}}(60) {{/U}} a child healthy. Obese children often become obese adults. {{U}}(61) {{/U}} you believe your child is too heavy, talk with a health care provider. The World Heart Federation is also concerned about the effects of tobacco on young people. It says the younger someone begins to smoke, the {{U}}(62) {{/U}} the chance of a health problem tied to smoking. Half of the young people who continue to smoke are {{U}}(63) {{/U}} to die later in life from a smoking-related disease. The group says almost half of all children live with a smoker. It gays children who live with a {{U}} (64) {{/U}} can breathe an amount of tobacco equal to more than two thousand cigarettes. And that is by the time they are five years old. The World Heart Federation also says parents should warn children not to be {{U}}(65) {{/U}} by tobacco companies. And it says parents who smoke should try to stop.

单选题The fuel tanks had a {{U}}capacity{{/U}} of 140 liters. A. function B. ability C. power D. volume

单选题Many economists have given in to the fatal lure of mathematics. A. error B. function C. attraction D. miracle

单选题Light Night, Dark Stars Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificial lights to block the view, people can see more than 14,000 stars in the sky, says Dennis Ward, an astronomer with the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo. But when people are surrounded by city lights, he says, they"re lucky to see 150 stars. If you"ve ever driven toward a big city at night and seen its glow from a great distance, you"ve witnessed light pollution. It occurs when light from streetlights, office buildings, signs, and other sources streams into space and illuminates the night sky. This haze of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing difficult. Dust and particles of pollution from factories and industries worsen the effects of light pollution. "If one city has a lot more light pollution than another," Ward says, "that city will suffer the effects of light pollution on a much greater scale." Hazy skies also make it far more difficult for astronomers to do their jobs. Cities are getting larger. Suburbs are growing in once dark, rural areas. Light from all this new development is increasingly obscuring the faint light given off by distant stars. And if scientists can"t locate these objects, they can"t learn more about them. Light pollution doesn"t only affect star visibility. It can harm wildlife too. It"s clear that artificial light can attract animals, making them go off course. There"s increasing evidence, for example, that migrating birds use sunsets and sunrises to help find their way, says Sydney Gauthreaux Jr., a scientist at Clemson University in South Carolina. "When light occurs at night," he says, "it has a very disruptive influence." Sometimes birds fly into lighted towers, high-rises, and cables from radio and television towers. Experts estimate that millions of birds die this way every year.

单选题Many Women Who Beat Cancer Don't Change Habits Many women who battle breast cancer will tell you it's a life-changing experience. However, a new study shows that for many (51) , the changes aren't always positive or permanent. Beth Snoke has watched her mother and both grandmothers battle and survive breast (52) . So when she was diagnosed, there was no doubt in her mind (53) she had to do. "I do exactly what the doctors say as far as the medicine that I'm on , as (54) as the vitamins, the diet, and the fitness. And I can't stress enough (55) important that is. " says Beth Snoke. But a surprising new study shows that (56) every woman who beats breast cancer is getting that message. In fact, nearly 40% of them say even (57) surviving breast cancer, they haven't made significant changes in the (58) they eat or how much they exercise. "Not all survivors are taking advantage of this teachable moment and making positive health changes in (59) life. " says Electra Paskett, PhD, at Ohio State University's Comprehensive Cancer Center. Paskett says diet and exercise have been proven to not only help women feel better during and after treatment, they may (60) play a role in preventing some cancers from coming back. (61) growing evidence, some women just aren't listening. "Colon cancer survivors (62) exercise have actually been shown to have improved survival rates. So, yes, it is true that perhaps by making some of these healthy choices we can actually increase their health. " says Paskett. As a breast cancer survivor (63) , Paskett knows first hand how much difference diet and exercise can (64) . The challenge, she says, is to get more survivors to be more like Beth. Experts say exercising more and eating a healthier diet can also cut (65) on stress and help women overcome depression. There are more than 2 million breast cancer survivors living in the U. S. of those, nearly a million have yet to change their diet or exercise routines.

单选题For young children, getting dressed is a complicated business.

单选题A Desert Between Paul and Clara Paul had long promised to marry Clara. But at thirty-three be met and married Alice. Clara was driven mad. Paul was taken to court. The judge ordered him to pay Clara $600 because of the broken promise. Paul had to borrow the money from a moneylender. He agreed to pay back $5 a month—for twenty years. His wages at the time were $16 a month. Paul and Alice were poor but not unhappy. They had little enough food, certainly, even before the children began to arrive. Each month Paul paid $5 to the moneylender. He worked hard, never taking a holiday. In time, there were seven mouths to feed. Illness was always with them. It grew serious when the oldest child was eight. The years of hunger weakened the family, because each month Paul paid $5. The details of the sickness were ugly, but the result was this: after twelve years of family life, Paul was alone in the world. He lived alone except for memories. Work was not now a god for him: it was a pain- killer. Each month he paid, and in time the twenty years ended. From that moment his wages were his own. One day, it was a holiday went to the seaside. He sat down on a seat by the sea. A middle-aged woman came and sat down near him. They recognized each other at once. The woman said, "The $600 has been in the bank since the day it was paid to me. It is now $6,000, and I have kept it for you. Will you let me share it with you?" "No," said Paul, gently. "Each thousand is a lost life in a desert between us. It can never bring any happiness. "

单选题Although originally a German innovation, kindergarten got its real start in the United States as a movement to provide an improved learning environment for children.

单选题His answers were obscure and confusing.

单选题The latest Ucensus/U is encouraging.

单选题The economy continued to{{U}}exhibit{{/U}} signs of decline in September

单选题You will be informed of the details at the appropriate time.A. earlierB. properC. givenD. wrong

单选题Reasons for Vegetarianism Vegetarians choose their diet for many reasons. Some are health - conscious, some believe animal agriculture hurts the environment and others have moral or religious objections to meat. Vegetarianism has become a popular health diet. Vegetarian favorites like fruit, vegetables, whole grains, and legumes (豆科植物) are low in fat and cholesterol (胆固醇) and rich in fiber, vitamins C and E. The American Dietetic Association even reports that vegetarians have lower blood pressure, cholesterol and body mass indexes than non - vegetarians. Of course, no diet is automatically healthy. Vegetarians must make sure they take in enough protein, calcium and vitamin B12 without overindulging in fatty, high -calorie foods like cheese. Many vegetarians are as concemed with the Earth' s well - being as they are with their own. Some vegetarians choose the diet for environmental reasons because they believe traditional agriculture has less of an ecological impact than animal agriculture. People usually try not to think about where their meat comes from. It can be unpleasant toimagine your hamburger as a wide - eyed cow in the pasture, let alone as an unhealthy animal in acramped (狭小的) factory farm. But for many vegetarians, disassociation or denial is impossible. They often feel morally unable to eat animals slaughtered for their meat. Vegans take their ethical objections a step further and refuse to eat dairy or eggs from animals that they believe have led unnaturally short and unhappy lives. Some of vegetarianism' s ethical concerns have spread to the mainstream. Even steadfast (忠诚的，忠实的) meat - eaters often like the idea of free - range (活动范围不受限制的) chicken or cage -free eggs- animal husbandry (饲养业) techniques that promise a more compassionate (表示怜悯同情的) altemative to traditional factory farming. Vegetarians have long chosen the diet for ethical reasons. Although the first practitioners only temporarily avoided meat for purification, the first regular vegetarians began the diet after philosophical awakenings in the Eastern Mediterranean region and India. The philosopher Pythagoras of Samos (c. 530 BC) taught vegetarianism to his followers. Pythagoras believed that because we are related to animals, we should treat them with kindness. Many other famous philosophers agreed--Plato, Epicurus and Plutarch condemned animal sacrifice and avoided eating meat. In India, the Buddhist religions teach that humans should not kill living creatures for food. Although Buddhism later declined in India, vegetarianism remained and spread among people Many upper classes and some lower classes adopted the virtue of harmlessness, which forbade hurting living things.

单选题Margaret Mead"s reputation was established with the publication of her first book in 1982 and was enhanced by her many subsequent contributions to anthropology.

单选题The Only Way Is Up Think of a modem city and the first image that come to mind is the skyline. It is full of great buildings, pointing like fingers to heaven. It is true that some cities don't permit buildings to go above a certain height. But these are cities concerned with the past. The first thing any city does when it wants to tell the world that it has arrived is to build skyscrapers. When people gather together in cities, they create a demand for land since cities are places where money is made, that demand can be met. And the best way to make money out of city land is to put as many people as possible in a space that covers the smallest amount of ground that means building upwards. The technology existed to do this as early as the 19th century. But the height of buildings was limited by one important factor. They had to be small enough for people on the top floors to climb stairs. People could not be expected to climb a mountain at the end of their journey to work, or home. Elisha Otis, a US inventor, was the man who brought us the lift or elevator, as he preferred to call it. However, most of the technology is very old lifts work using the same pulley system the Egyptians used to create the Pyramids. What Otis did was attach the system to a steam engine and develop the elevator brake, which stops the lift falling if the cords that hold it up are broken. It was this that did the most to gain public confidence in the new invention. In fact, he spent a number of years exhibiting lifts at fairgrounds, giving people the chance to try them out before selling the idea to architects and builders. A lift would not be a very good theme park attraction now. Going in a lift is such an everyday thing that it would just be boring. Yet psychologists and others who study human behavior find lifts fascinating. The reason is simple. Scientists have always studied animals in zoos. The nearest they can get to that with humans is in observing them in lifts. "It breaks all the usual conventions about the bubble of personal space we carry around with us and you just can't choose to move away," says workplace psychologist, Gary Fitzgibbon. Being trapped in this setting can create different types of tensions, he says. Some people are scared of them. Others use them as an opportunity to get close to the boss. Some stand close to the door. Others hide in the comers. Most people try and shrink into the background but some behave in a way that makes others notice them. There are a few people who just stand in a comer taking notes. Don't worry about them. They are probably from a university.

单选题{{B}}第二篇{{/B}} Call American Their names A great difference between American social customs and those of other countries is the way in which names are used. Americans have little concern for "rank", especially socially. Most Americans do not want to be treated in any especially respectful way because of their age or social rank ; it makes them feel uncomfortable. Many Americans even find the terms "Mr. ", "Mrs. " or "Miss" too formal. People of all ages may prefer to be called by their first names. "Don't call me Mrs. Smith. Just call me Sally. " Using only first names usually indicates friendliness and acceptance. However, if you do not feel comfortable using only first names, it is quite acceptable to be more for mal. Just smile and say that after a while you will use first names but you are accustomed to being more when you first meet someone. Very often, introductions are made using both first and last names: "Mary Smith, this is John Jones. " In this situation you are free to decide whether to call the lady "Mary" or "Miss Smith".Sometimes both of you will begin a conversation using last names, and after a while one or both of you may begin using first names instead. You have a choice : if you don't want to use first names so quickly, no one will think it impolite if you continue according to you own custom.

单选题The representative was asked to verify his earlier statement.