单选题And the cars are tested for {{U}}defects{{/U}} before leaving the factory. A. functions B. faults C. motions D. parts

单选题The governments of most seacoast nations print tidal tables showing the times of the tides at their main ports.A. calculateB. describeC. publishD. circulate

单选题The passage mentions all of the following factors for the existence of life EXCEPT A. the right amount of atmosphere. B. a steady supply of water. C. steady heat and light. D. the right distance from the sun.

单选题His {{U}}motive{{/U}} in coming was to find out the truth.

单选题The dogs that help in criminal investigations are trained at a school called the Military Dog Studies branch of the US Air Force in Lackland, Texas. The dogs to be trained are selected by an air force team. This team visits large cities across the country to buy dogs. They may buy dogs from private citizens for up to $ 750 each. Some citizens freely give their dogs. The dogs selected must be healthy, brave and aggressive. They must be able to fight back if they are attacked. The dogs chosen are between the ages of one and three. They are given a medical examination when they arrive at the school. Their physical examination includes X - rays and heart tests. The trainee dogs undergo the first stage of training when they arrive in Lackland. This is an 11 - week course for patrol duty. After this course, the best dogs are selected to go on another 9 - week course. They learn drug - sniffing or bomb - sniffing. After this course, the dogs are ready for their jobs in the cities or off air force bases. Dogs are ready for their jobs of drug - sniffing or bomb - sniffingA. after an 11 - week course.B. after a 9 - week course.C. after they are given medical examinationsD. after they have grown large enoug

单选题Up in Smoke I began to smoke when I was in high school. In fact, I remember the evening I was at a girlfriend's house, and we were watching a movie—a terribly romantic movie. He (the hero of the movie) was in love, she (his lady) was beautiful, and they were both smoking. My friend had only two cigarettes from a pack in her mother's purse, and she gave one to me. It was my first time. My parents didn't care much. They both smoked, and my older brother did too. My mother told me that smokers don't grow tall, but I was already5'6"(taller than most of the boys in my class), so I was happy to hear that "fact". In school, the teachers talked against smoking, but the cigarette advertisements were so exciting. The men in the ads were so good-looking and so successful, and the women were-well, they were beautiful and sophisticated(老于世故的). I read a book called how to stop smoking. The writer said that smoking wastes time, and that cigarettes cost a lot of money. "So what?" I thought, the book didn't say that smoking can take away years of your life. But ten years later, everyone began to hear about the negative effects of cigarette smoke: lung disease, cancer, and heart problems. After that, there was a health warning on every pack of cigarettes. I didn't pay much attention to the reports and warnings. I felt healthy, and I thought I was taking good care of myself. Then two events changed my mind. First, I started to cough. I thought it was just a cold, but it didn't get better. Second, my brother got lung cancer. He got sicker and sicker. My brother and I used to smoke cigarettes together over twenty years age, and we smoked our last cigarettes together the day before he died. I sat with him in his hospital room, and I decided to quit. "NO more cigarettes, ever," I said to myself. However, it was very hard to stop, Nicotine(尼古丁)is a drug; as a result, cigarettes cause a powerful addiction. I tried several times to quit on my own—without success. I made excuses. I told myself: Smoking helps me keep my figure—i.e. I don't gain weight when I smoke. Smoking not only relaxes me but it also helps me think clearly. I'm a free, liberated woman. I can smoke when I want to. Finally, I ran out of excuses—I might say my excuses went up in smoke. I joined the "Stop Smoking" program at the local hospital, which also ended up in failure.

单选题Nanotechnology Many of the grand challenges of today and the future are found in the question: "How are we going to solve the problems and make serious improvements in industrial manufacturing, disease control, environmental pollution control, global climate change, food production, transportation, communication, and others?" Nanotechnology (纳米技术) promises to make revolutionary contributions. Within the next few years we can expect to see major improvements. Here are some possibilities the things to come. Nanotechnology is fundamentally changing the way materials and devices will be produced in the future. Nanostructures, ceramics, polymers, metals, and other materials will have greatly improved mechanical properties. In fact, with the ability to build things atom-by-atom and molecule-by-molecule there will be new classes of structural materials. Nanotechnology will enable products to be lighter, stronger, smarter, cheaper, cleaner and more precise. The ability to synthesize nanoscale budding blocks with precisely controlled size and composition and then to assemble them into larger structures with unique properties and functions will revolutionize segments of the materials manufacturing industry. Nanotechnology is expected to bring about lighter, stronger, and programmable materials; reductions in life-cycle costs through lower failure rates; innovative devices based on new principles and architectures; and use of molecular cluster manufacturing. Nanotechnology will provide new tools for medicine. It could radically change the way surgery is done. It will make it possible to do molecular scale surgery to repair and rearrange cells. Since disease is the result of physical disorder, misarranged molecules and cells, medicine at this level should be able to cure most diseases. Mutations in DNA could be repaired and cancer cells, toxic chemicals, and viruses could be destroyed through use of medical Nan devices. Nanotechnology enabled increases in computational power will permit the characterization of macromolecular networks in realistic environments. Such simulations will be essential elements in the development of biocompatible implants and in the drug discovery process. Nanotechnology has the potential to significantly impact energy efficiency, storage, and production. Nanotechnology can change the economics of energy production.

单选题When a woman reaches marriageable age, she and her parents compile a packet of information about her, including a photograph of her and description of her family background, education, hobbies, accomplishments, and interests. Her parents then inquire among their friends and acquaintances to see if anyone knows a man who would be a suitable husband for her. The person who does becomes the go—between, showing the packet to the potential bridegroom and, if both parties are interested, arranging a meeting in the restaurant of a posh (高档的，豪华的) hotel. The go - between is present, usually along with representatives from both families. If the young people feel inclined, they will begin dating, with marriage as a possible but not inevitable result. It is not uncommon for a women to have 10 or more such introductions before she finds the man she wants to marry. If the mail and woman are interested in each other, they willA. begin dating.B. get married.C. go to another introduction.D. begin dating but not marry.

单选题Hearing problems may be alleviated by changes in diet and exercise habits. A. removed B. cured C. treated D. lessened

单选题The writer found it hard to quit smoking because

单选题The story was very touching . ______

单选题The book's unusual title {{U}}intrigued{{/U}} me into reading it.

单选题What did the “couch” represent?

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}}The Ideal Husband{{/B}} Science now might be able to explain women's fascination with Brad Pitt's face and George Clooney's eyes. Women seem to{{U}} (51) {{/U}}potential mates by how masculine their features are, new research shows. Men with square jaws and well-defined brow ridges are seen as good short-term partners,{{U}} (52) {{/U}}those with more feminine traits such as a rounder face and fuller lips are perceived as better long-term mates. In the study by Daniel Kruger at the US's University of Michigan, 854 subjects viewed a series of{{U}} (53) {{/U}}head shots that had been digitally changed to exaggerate or minimize masculine traits They then{{U}} (54) {{/U}}questions about how they expected the men in the photos to behave. Most participants said that those with more masculine features were{{U}} (55) {{/U}}to be risky, competitive, and more apt to fight, challenge bosses, cheat on spouses and put less effort into parenting. Those with more feminine{{U}} (56) {{/U}}were seen as good parents and husbands, hard workers and emotionally supportive mates. But, despite all the negative characteristics, when asked who they would choose for a short-term relationship, women selected the more masculine{{U}} (57) {{/U}}men. Brad and George, both chiseled jaws and well-defined brows, then would be good for a{{U}} (58) {{/U}}romance, not for something longer. The study was published in the December issue of the US journal Personal Relationships. Kruger said that from an evolutionary perspective, this{{U}} (59) {{/U}}sense. The key is testosterone, the hormone responsible{{U}} (60) {{/U}}the development of masculine facial features and other sexual characteristics. It has been found to affect the body's ability to fight disease: men with high levels of the hormone are typically{{U}} (61) {{/U}}and healthy-traits women want to pass on to their children. However, increased testosterone has also been linked to{{U}} (62) {{/U}}and violence in relationships. So, these men{{U}} (63) {{/U}}produce high quality offspring, but they don't always make great parents or faithful mates, Kruger says. The scientific community have{{U}} (64) {{/U}}skepticism toward physiognomy, which links facial characteristics to certain behavioural traits. But Kruger argues that the research is a valuable tool for understanding mating strategies. And, of course, for explaining why Tony Leung and Takeshi Kanesshiro have millions of female{{U}} (65) {{/U}}. It might have to do with their genes. Or something to do with ours.

单选题An Awful Afternoon Sometimes I feel that being the mother of three small children is like running a large circus(马戏团). One afternoon last week, my three sons were playing peacefully in the backyard, throwing the ball from one to the other. I jumped at the chance to talk to one of my friends on the phone, but before I got to the phone, I could tell that the boys had begun to quarrel with each other over something. I rushed out to make peace, but before I got there, Charles had begun to fight over this. Even David, the oldest boy, who won't usually fight with anybody over anything, was involved. First, I made them stop fighting, and then I examined Mark's eye. I decided that it wasn't going to develop into a black eye, but I felt that they should suffer at least a little for what they had done. "I'm going to speak to your father about these when he comes home tonight," I said. "He and I will think of how to punish you. " Things were pretty quiet after that for about half an hour, and then Charles broke a glass in the kitchensink, and at almost the same moment, Mark fell out of the apple tree. I suppose I will be able to laugh at all these things someday. In the meantime, I just pray to heaven for patience.

单选题 阅读下面这篇短文，短文后列出了7个句子，请根据短文的内容对每个句子作出判断。如果该句提供的是正确信息，请选择A项；如果该句提供的是错误信息，请选择B项；如果该句信息文章中没有提及，请选择C项。 {{B}}The First Settlement in North America{{/B}} It is very difficult to say just when colonization began. The first hundred years after Christopher Columbus's journey of discovery in 1492 did not produce any settlement on the North America continent but rather some Spanish trading posts further south, a great interest in gold and adventure, and some colorful crimes in which the English had their part. John Cabot, originally, from Genoa but a citizen of Venice, was established as a trader in Bristol, England, when he made a journey in 1497. But his ship, the Matthew, with its crew of eighteen, did no more than see an island (probably off the New England coast) and return home. He and his son made further voyages across the north Atlantic which enabled the English crown to claim a "legal" title to North America. But for a long time afterwards the Europeans' interest in America was mainly confined to the Spanish activities further south. The first beginning of permanent settlement in North America were nearly a hundred years after Columbus's first voyage. The Englishman Sir Walter Raleigh claimed the whole of North America for England, calling it Virginia. In 1585 he sent a small group of people who landed in Roanoke Island, but they stayed only for a year and then went back to England with another expedition, led by Drake, in 1587. A second group who landed in 1587 had all disappeared when a further expedition arrived in 1590. The first permanent settlement in North America was in 1607. English capitalists founded two Virginia companies, a southern one based in London and a northern one based in Bristol. It was decided to give the name New England to the northern area. The first settlers in Virginia were little more than wage slaves to the company. All were men and the experiment was not very successful. Many died. Those who survived lived in miserable conditions. By 1619 the colony had only a thousand people.

单选题The steadily rising cost of labor on the waterfront has greatly increased the cost of shipping cargo by water.

单选题We all know that Sharon is a woman of strong political Uconvictions/U.

单选题 The Street Violinist (小提琴手) I got up and dressed, stuck my violin under my jacket, and went out into the streets to try my luck. I wandered about for an hour, looking for a likely spot, feeling as though I were about to commit a crime. Then I stopped at last under a bridge near the station and decided to have a try. I felt tense and nervous. It was the first time, after all. I drew the violin from under my coat like a gun. It was here, in Southampton, with trains rattling (咔嗒咔嗒地行驶) overhead, that I was about to declare myself. One moment I was part of the hurrying crowds, the next I stood apart, my back to the wall, my hat on the pavement before me, the violin under my chin. The first notes (音符) I played' were loud and raw, like a declaration of protest, then they settled down and began to run more smoothly and to stay more or less in tune. To my surprise I was neither arrested nor told to shut up. Indeed, nobody took any notice at all. Then an old man, without stopping, surreptitiously (偷偷摸摸地) tossed a penny into my hat as though getting rid of some guilty evidence. I worked the streets of Southampton for several days, gradually acquiring the truths of the trade by trial and error. It was not a good thing, for instance, to let the hat fill up with money - the sight could discourage the patron: nor was it wise to empty it completely, which could also confuse him; giving him no hint as to where to drop his money. Placing a couple of pennies in the hat to start the thing going soon became a regular ritual, making sure, between tunes, to hide most of the earnings, but always leaving two pennies behind. Old ladies were most generous, and so were women with children, shopgirls, typists and barmaids (酒吧女招待). As for the men: heavy drinkers were always willing listeners and so were big guys with muscles. But never a man with a gentleman's hat, briefcase or dog:' respectable types were the meanest of all. Except for retired army officers, who would yell "Why aren't you working, young man?" and then toss some money into the hat to hide their confusion.

单选题I am feeling{{U}} a lot {{/U}}more healthy than I was