单选题{{B}}Passage 3{{/B}} On 5th December, 1945; five bombers from a United States Naval Air Station left Fort Lauderdale, Florida, on a routine training flight over the Atlantic Ocean, east of Florida. A short time later the base received radio messages from the bombers (Flight 19) ,saying that they were lost. Then radio contact was broken The flight did not return, and the planes that were sent to look for the bombers also failed to return. A massive search operation was mounted, but no trace of the missing planes or their pilots was found. They had simply and inexplicably disappeared. This event was sufficient to confirm in many people's minds that the so-called "Devil's Triangle". or "Bermuda Triangle" —a section of the North Atlantic bounded roughly by Bermuda, Florida and Puerto Rico— really was haunted. and in some mysterious way was responsible for the loss of ships and planes. In all, in this area (3 900 000 square kilometres) of open sea, more than 50 ships and 90 planes have mysteriously disappeared. These include the US Navy ship Cyclops in 1918 and the merchant vessel Marine Sulphur Queen in 1963. In the same year two US Air Force KC 135 planes also disappeared without trace. In other words, it is not only small boats and planes that have vanished in the are4,but the most modem and best-equipped too. Perhaps the most dramatic shipping loss in the area was the US Navy nuclear submarine Scorpion. This vessel, like others before her, disappeared without explanation in May, 1968. Some months later she was found on the bottom of the ocean, but the reason for her loss has not been properly explained. Many theories about the area have been proposed, and whole books have been written on the subject. It has been suggested, for example, that the disappearances are caused by unknown magnetic forces from outer space or from the bottom of the sea. There is also a theory about underwater volcanic action that affects shipping, and another that suggests the lost continent of Atlantis, which according to legend lies somewhere beneath the Atlantic, is involve& However, others state that it is more likely that there is nothing special about this imaginary triangle of water, and that it is a product of sensational journalism. After all, ships, boats and planes are lost at sea in all parts of the world due to weather, mechanical failure or human error, and several of the losses are mysterious. The Marie Celeste, an American cargo boat, for example, was found in 1872 off the coast of Portugal in perfect order but with no crew on board. Their disappearance has never been explained. Did some of them mutiny and then escape? Were all the crew killed by some unknown agent? Did they try to escape from some danger or other? We shall probably never know. However, regardless of the theories which exist about the "Bermuda Triangle", ships, boats and planes continue to travel daily trough the area with great frequency and it has not been proven that a higher percentage of accidents and losses occur in this section of the North Atlantic than in other areas of the world's oceans.

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单选题In supporting his argument about the ancient world, the author mainly discusses the______.

单选题The dramatic growth of the business dealing in video games is the result of ______.

单选题You will hear three dialogues or monologues. Before listening to each one, you will have time to read the questions related to it. While listening, answer each question by choosing A, B, C or D. After listening, you will have time to check your answer. You will hear each piece once only.

单选题The warning given by Frank Church is

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单选题"plural society" (Pam.3)refers to a society where

单选题Telemedicine is the name for when doctors give advice to patients by telephone or the Internet, or when health care providers in rural areas connect with specialists in big cities. It has existed for a long time, but the rise of smartphone, tablets and webcam-equipped computers is raising telemedicine to new levels. Some health care systems in the United States now offer Virtual Urgent Care, on which patients see a doctor by video chat without having to leave home. Ben Green is a nurse educator in the western state of Washington. He recently demonstrated how Virtual Urgent Care works. He used an iPad tablet and Skype—a video chat service. Firstly Doctor Green had the patient describe her symptoms, then he performed a physical exam by demonstrating what he wanted her to do. Doctor Green decides that the problem is a silence infection. For medicine, he prescribes an antibiotic. He says about 75% patients have health problems that can be treated like this—through Virtual Urgent Care, that means a video chat could replace a visit to the doctor"s office. "Of course, patient safety is important to us. So if we feel like the patient is not safe to be treated in this manner, we"re going to suggest other alternatives for them," said Green. The Franciscan Health System is based in Tacoma, Washington. Franciscan charges ＄35 for this kind of virtual house call, that is much less than the cost of going to an emergency room, a doctor"s office or an urgent care clinic. After trying the video conference, Mr. Green says he would be happy to pay the ＄35, when he was recently home with a bad cold. "I would have paid twice that for the convenience of being taken care of without having to sit in a waiting room, wait, and get exposed to everyone else"s germs," he said. Franciscan operates hospitals, clinics and a hospice for end-of-life care. Franciscan has a deal with a company called Carena to add Virtual Urgent Care by Skype or phone. Carena is one of several companies doing this kind of work around the country. But a company official says state rules have not kept progress with developments in telemedicine. The workers who provide Virtual Urgent Care must be separately licensed in each state where the company has business. For now, that means Carena doctors can treat patients in Washington State and California for example, but not in neighboring Oregon or Idaho.

单选题New research from Australia supports the belief that many pet owners have—it shows that pets are good for your health. The findings of this new study suggest that people who have pets are at less risk from heart disease than those who do not. Ironically, this latest study on pets was intended to explode the myth that pets are good for your health. Earlier research on the benefits of owning pets received a lot of publicity, but the results were not good enough to convince the more skeptical doctors. The new research was carried out over three years and examined 6000 people, the largest group yet involved in such a study. They took tests that measured a variety of different factors known to be involved in heart disease—blood pressure, and blood levels of cholesterol (胆固醇) and triglyceride (甘油三酯). Also, people were asked about their lifestyles. The 800 people who owned pets had lower levels on each of the factors measured than those who did not own pets. The differences were even greater than those found in similar studies on people who switched to vegetarian diets or took up exercise. The study also showed that it did not matter what kind of pet was owned—a cat was as good as a dog—so the benefits could not be attributed to the exercise involved in walking a dog. The question is, just how do pets manage to make their owners more healthy? The obvious answer is that they make their owners feel more relaxed and happy. After all, what better way of getting rid of all that tension than by walking the dog or stroking the cat? However, it is not that simple. While there is some evidence that an unhappy event, such as the death of a partner, can be bad for a person's health, at the moment there is little evidence that having good relationships has a positive effect on health. As long as the exact way that pets make their owners healthier is unknown, many doctors will be reluctant to prescribe a pet instead of a pill for their patients. Nevertheless, the Australian scientist who organized this study commented that if a new drug was available that was as effective as simply having a pet, then this drug would undoubtedly be considered a breakthrough in the control of heart disease.

单选题 The job interview is an ordeal that most people face at some stage in our career. But as video starts to take the place of the face-to-face interview, is it easier or harder now to land your dream job? The job interview as we know it may never have existed if it wasn't for Thomas Edison. Frustrated with hiring college graduates who lacked the right knowledge, Edison devised the first employment questionnaire to narrow down his applicant pool. The survey was thought to be so difficult that in 1921 the New York Times nicknamed it as "Tom Foolery test" and claimed only a "walking encyclopedia" could succeed. Questions included: "What is the weight of air in a room 20ft x 30ft x 10ft?" But today the trick to making a good impression at interview may be less about what you know and more about how you come across on camera. Looking in the wrong place is just one of the common pitfalls of video interviews, says New York based career coach and blogger Megan Broussard. "It's tempting to watch yourself in that little box to make sure your hair isn't in your face or that you're not making weird facial expressions. But the truth is that it is very distracting to the other party and can come across as shy and even insincere—two qualities both employers and new hires want to avoid. " The UK company, Webrecruit, reports a steady increase in the use of automated video interviewing over the past few years. Employers can view recorded responses from candidates in their own time. "Clients will input their questions, and then the candidate receives an automated email inviting them to sit the interview," explains Webrecruit's Leona Matson. "The interviewee can then sit the interview within an allocated time frame, the answers are recorded, and then the client can view it at a time that suits them." In 2012 employers in the UK spent an average of 10 working days interviewing, 16% of the working week travelling to meet candidates and ￡3,286 reimbursing candidates' travel expenses, according to a survey carried out by Cammio—a Dutch company specialising in online video services. For large firms with international graduate schemes, the savings can be significant. Sellafield's graduate scheme cited cost savings of ￡14,000 using video technology to screen interview candidates. The European Organization for Nuclear Research (EONR) also report cutting recruitment costs by 20% using automated video assessments for first-round interviews.

单选题I'd like to propose that for sixty to ninety minutes every evening right after the early evening news, all television broadcasting in America be prohibited by law. Let us take a serious, reasonable look at what the results might be if such a proposal were accepted. Families might use the time for a real family hour. Without the distraction of TV, they might sit around together after dinner and actually communicate with one another. It is well known that many of our problems -- everything, in fact, from the generation gap to the high divorce rate to some forms of mental illness -- are caused at least in part by failure to communicate. We do not tell each other what makes us feel disturbed. The result is emotional difficulty of one kind or another. By using the quiet family hour to discuss our problems, we might get to know each other better, and to like each other better. On evenings when such talk is unnecessary, families could rediscover more active pastimes. Freed from TV, forced to find their own activities, they might take a ride together to watch the sunset, or they might take a walk together (remember feet?) and see the neighborhood with fresh, new eyes. With free time and no TV, children and adults might rediscover reading. There is more entertainment in a good book than in a month of typical TV programming. Educators report that the generation growing up with television can barely write an English sentence, even at the college level. Writing is often learned from reading. A more literate new generation could be a product of the quiet hour. A different form of reading might also be done, as it was in the past: reading aloud. Few hobbies bring a family closer together than gathering around and listening to mother or father read a good story. The quiet hour could become the story hour. When the quiet hour ends, the TV networks form our newly discovered activities. At first glance, the idea of an hour without TV seems radical. What will parents do without the electronic baby-sitter? How will we spend the time? But it is not radical at all. It has been only twenty-five years since television came to control American free time. The people who are thirty-five and older can remember childhood without television, spent partly with radio -- which at least involved the listener's imagination -- but also with reading, learning, talking, playing games, inventing new activities. It wasn't that difficult. Honest. The truth is that we had a ball.