单选题The president {{U}}proposed{{/U}} that we should bring the meeting to a close. A. stated B. said C. suggested D. announced

单选题You possess {{U}}affluence{{/U}}, but it doesn't mean you can have everything in hand.

单选题He failed the exam again because he was so careless.A. uselessB. attentionlessC. foolishD. handsome

单选题According to Campbell, health education should be centred on

单选题15 I expect that she will be able to cater for your particular needs.

单选题The AIDS Uconvention/U will be held in Glasgow.

单选题Canada will prohibit smoking in all offices later this year.

单选题A limited number of books on this subject are in the library.

单选题Hearingproblems may be alleviated by changes in diet and exercisehabits.

单选题 阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 {{B}} Passive Smoking is Workplace Killer{{/B}} Pressure mounted on Britain on Monday to take action on{{U}} (1) {{/U}}smoking with new research showing second-hand smoke{{U}} (2) {{/U}}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{{U}} (3) {{/U}}kills 49 employees in pubs, bars, restaurants and hotels each year and contributes to 700 deaths from lung cancer, heart{{U}} (4) {{/U}}and stroke across the total national work force. "Exposure in the hospitality{{U}} (5) {{/U}}at work outweighs the consequences of exposure of living.{{U}} (6) {{/U}}a smoker for those staff. "Jamrozik said in an interview. Other{{U}} (7) {{/U}}have measured the levels of exposure to passive smoking but Jamrozik calculated how it would translate into avoidable deaths. His findings are{{U}} (8) {{/U}}on the number of people working in the hospitality industry in Britain, Their exposure to second hand smoke and their{{U}} (9) {{/U}}of dying from it. Jamrozik said me findings would apply to{{U}} (10) {{/U}}countries in Europe because, to a greater or{{U}} (11) {{/U}}extent, levels of smoking in the community are similar. Professor Carol Black, president of the Royal College of Physicians, who sponsored the meeting said the research is proof of the need for a ban on smoking in{{U}} (12) {{/U}}places. "Environmental tobacco smoke in pubs, bars, restaurants and other public places is{{U}} (13) {{/U}}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{{U}} (14) {{/U}}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{{U}} (15) {{/U}}. New York and parts of Australia have taken similar measures. workplace n. 工作场所:车间 hospitality n. 友好款待;好客;殷勤 imperial adj. 英联邦的 outweigh vt. 在重要性(或价值上)超过 vulnerable adj. 易受伤的;脆弱的

单选题Listening to Birdsong A male zebra finch chirps away to himself. Suddenly he notices a female bird nearby. He realizes he has an audience and immediately changes his song. Can the female tell the difference in his performance? According to a new study, the female zebra finch knows. And she prefers the special trills he creates when he sings to her. A male zebra finch changes his song when singing to a female in ways that people can barely detect. But the female finch can tell the difference. Scientists had noticed slight variations in the songs of male zebra finches based on whether they were singing alone or whether there was a female (and potential mate) nearby. With an audience, the males sped up the pace of their songs and controlled the notes they used. For this study, researchers Sarah C. Woolley and Allison Doupe at the University of California, San Francisco decided to focus attention on the listening females, which have not been well studied in the past. In the study, Woolley and Doupe set up, a long cage with a sound speaker at each end. One broadcast the sound of a male zebra finch singing to himself, like someone singing in the shower. The other speaker broadcast a male performing for a female audience, as if he was giving a concert. Female birds were placed between the two speakers. Some of the birds had mates. Others didn"t. The females shifted around a bit, and then most of them hopped over to sit beside just one speaker. All the birds that made a clear choice liked songs meant for a female audience, even if they"d never met the male. Mated females also had a chance to listen to two different performance songs, one from an unknown male, and one from their mate. They spent more time listening to the concert version of their mates" songs. This suggests that after a while, females learn to recognize—and prefer—the songs of their mates. Scientists then studied the brains of the females. They found certain areas of the brain perked up when the birds listened to the concert songs. These brain areas may be involved in recognizing and evaluating the songs, and storing the memories of them. This research deals with what"s called directed communication, when the communicator, or sender, focuses the message for a specific audience. One example is the way moms speak to their babies. Mothers around the world use the same sort of high-pitched sing-song chatter, and the babies respond best to those sounds. Songbirds are one of the only other species known to learn their communication, in this case their songs.

单选题More than one million Americans participated in the six-year study.

单选题The woman living next door is extremely {{U}}slender{{/U}}.

单选题Of the reptile groups, the snake group was the {{U}}final{{/U}} one to appear. A. last B. best C. ugliest D. longest

单选题{{B}}第二篇{{/B}} {{B}} FDA: Human, Animal Waste Threatens Produce{{/B}} The biggest food safety risk for fresh fruits and vegetables as they are grown, picked or processed comes from human and animal waste, the US Food and Drug Administration (FDA) said Friday. More than 9,000 Americans die each year from food-borne diseases and some scientists believe fresh produce is the biggest carrier of contamination. The FDA issued a set of draft guidelines for US and foreign growers to carefully monitor worker hygiene, water quality, manure management and transportation. This 34-page draft guidelines urged growers to give workers lessons on basic hygiene such as Using soap to wash their hands, covering wounds that could come into contact with produce, and using only clean toilets. The FDA guidelines identified "the major source of contamination" for fresh produce as human or animal feces. "We think just proper controls and proper attention to detail would make a big difference in food safety," said an FDA official. "It is our belief that these guidelines would not be very costly. " But grower groups disagreed with the FDA's assessment. "Most food-borne disease outbreaks that happen further down the distribution line are due to contamination because people preparing food are not properly washing their hands," said Stacey Zawal, an official with United Fresh Fruit and Vegetable Association. "That is not necessarily true for growers and packers. " Some US grower organizations have expressed concern that the agency is interfering with on- farm practices. 8 Others object to the FDA's proposal to have growers formally document the picking, handling and transportation of produce so that health officials could quickly recall foods if necessary. Consumer groups criticized the FDA guidelines as of little use because they will not carry the force of law to But stricter regulations could evolve as researchers find new technology or methods to kill harmful bacteria or parasites, the FDA said. The FDA recommendations are due to be made final by the FDA later this year for use by US and foreign growers. The matter of encouraging foreign growers to adopt the guidelines remains somewhat tricky but FDA officials say it is vital because of the huge amount of imported produce.

单选题Mary said Umildly/U that she was just curious.

单选题 阅读下面这篇短文，短文后列出7个句子，请根据短文的内容对每个句子做出判断。 {{B}} Coming Soon to a Theater near You!{{/B}} What are special effects? Do you enjoy movies that use a lot of special effects? Dinosaurs (恐龙) from the distant past! Space battles from the distant future! There has been a revolution in special effects, and it has transformed the movies we see. The revolution began in the mid-1970s with George Lucas's Star Wars, a film that stunned (使震惊) audiences. That revolution continues to the present with dramatic changes in special effects technology. The company behind these changes is Lucas's Industrial Light Magic (ILM). And the man behind the company is Dennis Muren, who has worked with Lucas since Star Wars. Muren's interest in special effects began very early. At the age of 6, he was photographing toy dinosaurs and spaceships. At 10, he had an 8-millimeter movie camera and was making these things move through stop-motion. (Stop-motion is a process in which objects are shot with a camera, moved slightly, Shot again, and so on. When the shots are put together, the objects appear to move.) Talk to Muren and you'll understand what ILM is all about; taking on new challenges. By 1989, Muren decided he had pushed the old technology as far as it would go. He saw computer graphics(图像)(CG)technology as the wave of the future and took a year off the master it. With CG technology, images can be scanned into a computer for processing, for example, and many separate shots can be combined into a single image. CG technology has now reached the point, Muren says, where special effects can be used to do just about anything so that movies can tell stories better than ever before. The huge success of Jurassic Park and its sequel (续集), The Lost World, the stars of which were computer-generated dinosaurs, suggests that this may very well be true.

单选题Nerve signals may travel through nerve or muscle fibers at Uspeeds/U as high as two hundred miles per hour.

单选题Academic records from other institutions often become part of a university's official file and can neither be returned to a student nor {{U}}duplicated{{/U}}. A.borrowed B.purchased C.copied D.rewritten

单选题Happy Marriage, Happy Heart Happily married people have lower blood pressure (51) unhappily married people or singles, a Brigham Young University study says. On the other hand, even having a supportive social network did not translate into a blood pressure benefit for singles or unhappily (52) people, according to the study. "There seem to be some unique health benefits from marriage. It's not just being married (53) benefits health—what's really the most protective of health is having a happy (54) ," study author Julianne Holt Lunstad, a psychologist who specializes in relationships and health, said in a prepared statement. The study included 204 married and 99 (55) adults who wore portable blood-pressure monitors for 24 hours. The (56) recorded blood pressure at random intervals and provided a total of about 72 readings. "We wanted to capture participants' blood pressure doing whatever they normally (57) in everyday life. Getting one or two readings in a clinic is not really (58) of the fluctuations that occur throughout the day," Holt-Lunstad said. Overall, happily married people scored four points (59) on the blood pressure readings than single adults. The study also found that blood (60) among married people especially those in happy marriages - (61) more during sleep than in single people. "Research has shown that people whose blood pressure remains high throughout the night are at (62) greater risk of heart disease than people whose blood pressure drops," Holt-Lunstad said. The study was published in the March 20 (63) of the journal Annals of Behavioral Medicine. The study also found that unhappily married adults have higher blood pressure than (64) happily married and single adults. Holt-Lunstad noted that married couples can encourage healthy habits in one (65) , such as eating a healthy diet and having regular doctor visits. People in happy marriages also have a source of emotional support, she said.