单选题15 Million Americans Suffer from Social Anxiety Disorder Social anxiety disorder prevents some 15 million Americans from leading normal social and romantic lives, a new survey finds. The disorder leaves many isolated, ashamed and often misdiagnosed. Thirty-six percent of those with social anxiety disorder have symptoms for 10 years or more before seeking help, the Anxiety Disorders Association of America reports. "Social anxiety disorder is when somebody has an intense, persistent and irrational fear of social or performance situations," Jerilyn Ross, the association"s president and CEO, said during a teleconference on Wednesday. "The condition causes people to avoid common, everyday situations and even other people for fear of being judged or criticized or humiliated or embarrassing themselves," Ross said. Social anxiety disorder can interfere with daily routines and job performance, Ross noted. "It also makes it very difficult for people to develop friends and romantic partnerships," she said. People with this disorder recognize their fear is excessive and irrational, Ross noted. "But they feel powerless to do anything about it," she said. Social anxiety disorder can start in the early teens, Dr. Mark H. Pollack, director of the Center for Anxiety and Traumatic Stress Disorders and a professor of psychiatry at Harvard Medical School, said during the teleconference. "This is a disorder that starts affecting people early on," Pollack said. "The typical age of onset is early adolescence, aged 12 or 13, and many individuals report a history of anxiety dating back to earlier childhood." The disorder also has physical symptoms, including heart palpitations, feelings that their throat will close up, sweating, blushing, faintness, trembling and stammering, Ross said. Among people with the disorder, 75 percent said the condition affected their ability to do normal activities. In addition, 69 percent said they didn"t want people to think they were crazy, and 58 percent said they were embarrassed by their condition, Ross said. However, when the condition is diagnosed and treated, many reported improvement in their lives. In fact, 59 percent who were receiving treatment said treatment had a positive effect on their ability to have a romantic relationship. In addition, 39 percent who had received treatment said knowing that treatment can be successful aided their decision to get help, Ross noted.

单选题The river widens considerably as it begins to turn west.

单选题If you memorize a poem, you can say it without looking at a book.A. appreciateB. enjoyC. analyzeD. remember

单选题Passive Smoking Is Workplace Killer Pressure mounted on Britain on Monday to take action on 1 smoking with new research showing second-hand smoke 2 about one worker each week in the hospitality industry. Professor Konrad Jamrozik, of Imperial College in London, told a conference on environmental tobacco that second hand 3 kills 49 employees in pubs, bars, restaurants and hotels each year and contributes to 700 deaths from lung cancer, heart 4 and stroke across the total national work force. "Exposure in the hospitality 5 at work outweighs the consequences of exposure of living 6 a smoker for those staff," Jamrozik said in an interview. Other 7 have measured the levels of exposure to passive smoking but Jamrozik calculated how it would translate into avoidable deaths. His findings are 8 on the number of people working in the hospitality industry in Britain, their exposure to second-hand smoke and their 9 of dying from it. Jamrozik said the findings would apply to 10 countries in Europe because, to a greater or 11 extent, levels of smoking in the community are similar. Professor Carol Black, president of the Royal College of Physicians, which sponsored the meeting said the research is proof of the need for a ban on smoking in 12 places. "Environmental tobacco smoke in pubs, bars, restaurants and other public places is 13 damaging to the health of employees as well as the general public," she said in a statement. "Making these places smoke free not only protects vulnerable staff and the public, it will 14 help over 300,000 people in Britain to stop smoking completely," she added. Ireland recently became the first country to introduce a national ban on smoking in public 15 . New York and parts of Australia have taken similar measures.

单选题{{B}}第二篇{{/B}} Good Table Manners Manners play an important part in making a favorable impression at the dinner table. Here are some general rules: Napkin (餐巾) use The meal begins when the host unfolds his or her napkin. This is your signal to do the same, so place your napkin on your lap. Unfold it completely if it is a small napkin, or in half, lengthwise (纵向地), if it is a large dinner napkin. If you need to leave the table during the meal, place your napkin on your chair as a signal to your server that you will be returning. Once the meal is over, place your napkin neatly on the table to the right of your dinner plate. Do not refold it. Use a napkin only for your mouth. Never use it for your nose, face or forehead. Use of utensils(餐具) Start with the knife, fork or spoon furthest from your plate, and work your way in, using one utensil for each course. If soup is served, remember to spoon away from yourself. This helps stop the drips. Do not put the entire soup spoon in your mouth. Instead, fill a soup spoon about 75 per cent with soup, and sip (啜饮) it from the side noiselessly. After finishing dinner, place the knife and fork parallel to one another across the plate with the knife blade facing inward toward the plate. Using your fingers Here's a list of finger foods: sandwiches, cookies, small fruits or berries with stems, French fries and potato chips, and hamburgers. Chew( 咀嚼)with your mouth closed and don't make noise; don't talk with your mouth full. Bread must be broken with your hands. It is never cut with a knife. Don't pick something out of your teeth. Instead, excuse yourself to the bathroom. If possible, try not to cough at the table. Do not put your elbows (肘)on the table. In France, it is essential to have both hands above the table at the same time. Do not put bones or anything else on the table. Things that are not eaten should be put on your plate.

单选题Dating from around A. D. 1000, the largest mound surviving from the Mississippian culture was one hundred feet high and had a base of nearly fifteen acres.

单选题When snow accumulates on top of a building 'during the winter, the weight sometimes weakens the construction and occasionally causes the roof to collapse.A. meltsB. collectsC. selectsD. scatters

单选题She is slender, with delicate wrists and ankles.

单选题What is the correlation between the mother's age and the time when the child develops insulin-dependent diabetes?

单选题I notified him that the meeting had been postponed. A. informed B. observed C. mocked D. misled

单选题The Case of the Disappearing Fingerprints One useful anti-cancer drug can effectively erase the whorls(螺纹) and other characteristic marks that give people their distinctive fingerprints. Losing 1 could become troublesome. A case released online in a letter by Annals of Oncology indicates how big a 2 of losing fingerprints is. Eng-HuatTan, a Singapore based medical doctor describes a 62-year-old man who has used capecitabine to 3 his nasopharyngeal cancer. After three years on the 4 , the patient decided to visit U.S. relatives last December. But he was stopped by U.S. Customs officials 5 4 hours after entering the country when those officials couldn"t get fingerprints from the man. There were no distinctive swirly 6 appearing from his index finger. U.S. Customs has been fingerprinting incoming foreign visitors for years, Tan says. Their index fingers are 7 and screened against digital files of the fingerprints of bad guys—terrorists and potential criminals that our federal guardians have been tasked with keeping out of the country. Unfortunately, for the Singaporean traveler, one potential 8 effect of his drug treatment is a smoothing of the tissue on the finger pads. 9 , no fingerprints. "It is uncertain when fingerprint loss will 10 to take place in patients who are taking capecitabine," Tan points out. So he cautions any physicians who 11 the drug to provide their patients with a doctor"s note pointing out that their medicine may cause fingerprints to disappear. Eventually, the Singapore traveler made it into the United States. I guess the name on his passport didn"t raise any red flags. But he"s also now got the explanatory doctor"s note—and won"t leave home 12 it. By the way, maybe the Food and Drug Administration, 13 approved use of the drug 11 years ago, should consider 14 its list of side effects associated with this medicine. The current list does note that patients may experience vomiting, stomach pain and some other side effects. But no where 15 it mention the potential for loss of fingerprints.

单选题While serving in the Senate in the early 1970's, Barbara Jordan supported legislation to Uban/U discrimination and to deal with environmental problems.

单选题We can no longer {{U}}put up{{/U}} with his actions．

单选题The nucleus of the atom is composed of swiftly moving protons and neutrons that are held together by very strong forces.

单选题{{B}}第三篇{{/B}} {{B}} An Exciting New World Opening to Civilian Scientists{{/B}} It is hard to track the blue whale, the ocean's largest creature, which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior. So biologists were delighted early this year when, with the help of the Navy, they were able to track a particular whale for 43 days, monitoring its sounds. This was possible because of the Navy's formerly top-secret system of underwater listening devices spanning the oceans. Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the shops of potential enemies. Earth scientists announced at a news conference recently that they had used the system for closely monitoring a deep-sea volcanic eruption (爆发) for the first time and that they plan similar studies. Other scientist have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures. The speed of sound in water is roughly one mile a second-slower than through land but faster than through air. What is most important, different layers of ocean water can act as channels for sounds, focusing them in the same way a stethoscope (听诊器) does when it carries faint noises from a patient's chest to a doctor's ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.

单选题The scientists began to accumulate data. A. collect B. handle C. analyze D. investigate

单选题Jack consumes a pound of cheese a day.

单选题{{B}}第三篇{{/B}} Sport is not only physically challenging, but it can also be mentally challenging. Criticism from coaches, parents, and other teammates, as well as pressure to win can create an excessive amount of anxiety or stress for young athletes(运动员). Stress can be physical emotional, or psychological, and research has indicated that it can lead to burnout. Burnout has been described as dropping or quitting of an activity that was at one time enjoyable. The early years of development are critical years for learning about oneself. The sport setting is one where valuable experiences can take place. Young athletes can, for example, learn how to cooperate with others, make friends, and gain other social skills that will be used throughout their lives. Coaches and parents should be aware, at all times, that their feedback to youngsters can greatly affect their children. Youngsters may take their parents' and coaches' criticisms to heart and find a flaw(缺陷)in themselves. Coaches and parents should also be cautious that youth sport participation does not become work for children. The outcome of the game should not be more important that the process of learning the sport and other life lessons. In today's youth sport setting, young athletes may be worrying more about who will win instead of enjoying themselves and the sport. Following a game, many parents and coaches focus on the outcome and find fault with youngsters' performances. Positive reinforcement should be provided regardless of the outcome. Research indicated that positive reinforcement motivates and has a greater effect on learning than criticism. Again, criticism can create high levels of stress, which can lead to burnout.

单选题The manager allocates duties to the clerks.

单选题 下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请根据文章的内容，从每题所给的4个选项中选择1个最佳答案。{{B}}第一篇{{/B}} {{B}}Crystal Ear{{/B}} One day a friend asked my wife Jill if I wanted a hearing aid. "He certainly does," replied Jill. After hearing about a remarkable new product, Jill finally got up the nerve to ask me if I'd ever thought about getting a hearing aid. "No way," I said. "It would make me look 20 years older. .... No, no," she replied. "This is entirely different. It's Crystal Ear!" Jill was right. Crystal Ear is different--not the old-styled body worn or over-the-ear aid, but an advanced personal sound system so small that it's like contacts (隐形眼镜) for your ears. And Crystal Ear is super-sensitive and powerful, too. You will hear sounds your ears have been missing for years. Crystal Ear will make speech louder, and the sound is pure and natural. I couldn't believe how tiny it is. It 'is smaller than the tip of my little finger and it's almost invisible when worn. There are no wires, no behind-the-ear device. Put it in your ear and its ready-to-wear mold (形状) fits comfortably. Since it's not too loud or too tight, you may even forget that you're wearing it? Use it at work or at play. And if your hearing problem is worse in certain situations, use Crystal Ear only when you need it. Hearing loss, which occurs typically prior to teenage years, progresses throughout one's lifetime. Although hearing loss is now the world's number one health problem, nearly 90 percent of people suffering hearing loss choose to leave the problem untreated. For many millions, treating hearing loss in a conventional way can involve numerous office visits, expensive testing and adjustments to fit your ear. Thanks to Crystal Ear, the "sound solution" is now convenient. Almost 90 percent of people with mild hearing loss, and millions more with just a little hearing drop-off (下降), can be dramatically helped with Crystal Ear. Moreover, its superior design is energy-efficient, so batteries can last months. Crystal Ear is now available to help these people treat their hearing loss with a small hearing amplifier (放大器).