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单选题The experiences of Optimation indicate that
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单选题Trying to get Americans to eat a healthy diet is a frustrating business. Even the best- designed public-health campaigns cannot seem to compete with the tempting flavors of the snack-food and fast-food industries and their fat-and sugar-laden products. The results are apparent on a walk down any American street--more than 60% of Americans are overweight, and a full quarter of them are overweight to the point of obesity. Now, health advocates say, an ill-conceived redesign has taken one of the more successful public-health campaigns--the Food Guide Pyramid--and rendered it confusing to the point of uselessness. Some of these critics worry that America' s Department of Agriculture caved in to pressure from parts of the food industry anxious to protect their products. The Food Guide Pyramid was a graphic which emphasizes that a healthy diet is built on a base of grains, vegetables and fruits, followed by ever-decreasing amounts of dairy products, meat, sweets and oils. The agriculture department launched the pyramid in 1992 to replace its previous program, which was centered on the idea of four basic food groups. The" Basic Four" campaign showed a plate divided into quarters, and seemed to imply that meat and dairy products should make up half of a healthy diet, with grains ,fruits and vegetables making up the other half. It was replaced only over the strenuous objections of the meat and dairy industries. The old pyramid was undoubtedly imperfect. It failed to distinguish between a doughnut and a whole-grain roll, or a hamburger and a skinless chicken breast, and it did not make clear exactly how much of each foodstuff to eat. It did, however, manage to convey the basic idea of proper proportions in an easily understandable way. The new pyramid, called" My Pyramid", abandons the effort to provide this information. Instead, it has been simplified to a mere logo. The food groups are replaced with unlabelled, multi-colored vertical stripes which, in some versions, rise out of a cartoon jumble of foods that look like the aftermath of a riot at a grocery store. Anyone who wants to see how this translates into a healthy diet is invited to go to a website, put in their age, sex and activity level, and get a custom-designed pyramid, complete with healthy food choices and suggested portion sizes. This is fine for those who are motivated, but might prove too much effort for those who most need such information. Admittedly, the designers of the new pyramid had a tough job to do. They were supposed to condense the advice in the 84-page United States' Dietary Guidelines into a simple, meaningful graphic suitable for printing on the back of a cereal box. And they had to do this in the face of pressure from dozens of special interest groups--from the country' s Potato Board, which thought potatoes would look nice in the picture, to the Mmond Board of California, which felt the same way about almonds. Even the National Watermelon Promotion Board and the California Avocado Commission were eager to see their products recognized. Nevertheless ,many health advocates believe the new graphic is a missed opportunity. Mthough officials insist industry pressure had nothing to do with the eventual design, some critics suspect that political influence was at work. On the other hand, it is not clear how much good even the best graphic could do. Surveys found that 80% of Americans recognized the old Food Guide Pyramid--a big success in the world of public-health campaigns. Yet only 16% followed its advice.
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单选题{{B}}Directions:{{/B}}Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. The majority of people, about nine out of ten, are right-handed.{{U}} (1) {{/U}} until recently, people who were left-handed were considered {{U}}(2) {{/U}}, and once children showed this tendency they were forced to use their right hands. Today left-handedness is generally {{U}}(3) {{/U}}, but it is still a disadvantage in a world {{U}}(4) {{/U}} most people are right-handed. For example, most tools and implements are still {{U}}(5) {{/U}} for right-handed people. In sports {{U}}(6) {{/U}} contrast, doing things with the left hand or foot, .is often an advantage. Throwing, kicking, punching or batting from the"{{U}} (7) {{/U}} "side may result in throwing{{U}} (8) {{/U}} many opponents who are more accustomed to dealing with the{{U}} (9) {{/U}} of players who are right-handed. This is why, in many{{U}} (10) {{/U}} at a professional level, a{{U}} (11) {{/U}} proportion of players are left-handed than in the population as a whole. The word "right" in many languages means "correct" or is{{U}} (12) {{/U}} with lawfulness, whereas the words associated{{U}} (13) {{/U}} "left", such as "sinister", generally have{{U}} (14) {{/U}} associations. Moreover, among a number of primitive peoples, there is{{U}} (15) {{/U}} close association between death and the left hand. In the past, in{{U}} (16) {{/U}} western societies, children were often forced to use their right hands, especially to write with. In some cases the left hand was{{U}} (17) {{/U}} behind the child's back so that it could not be used. If, in the future, they are allowed to choose, {{U}}(18) {{/U}} will certainly be more left-handers, and probably{{U}} (19) {{/U}} people with minor psychological disturbances as a result of being forced to use their{{U}} (20) {{/U}} hand.
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单选题The author would most likely agree with the following sentence______
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单选题Which of the following is NOT true if you want to get out of the habit of sleeping during the evening?
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单选题Read the following text. Choose the best word(s)for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. (10 points) A few years ago, Facebook was forced to retreat from a new service called Beacon. It tracked what the social network's users were doing elsewhere on the web—which caused a huge (1) because of the loss of personal privacy. (2) , Facebook promised to make (3) efforts to better protect people's information. But (4) the firm has not been trying very hard. On November 29th America's Federal Trade Commission (FTC) (5) the results of an investigation it had conducted of Facebook. They showed that the world's biggest social network, which now (6) more than 800m users, has been making information public that it had (7) to keep private. The FTC's findings come at a(n) (8) time for Facebook, which is preparing for an initial public offering (IPO) that is almost (9) to take place next year. Some recent reports have (10) that the firm may seek a listing as early as next spring, and that it will try to (11) a whopping $10 billion in an IPO that would (12) it at $100 billion. To (13) the way for an offering, Facebook (14) needs to resolve some of the regulatory tussles over privacy that it has become embroiled in. (15) the FTC's announcement, which came as part of a settlement struck between the commission and Facebook. The FTC's investigation (16) a litany of instances in which the social network had (17) its users. In what is perhaps the most damning of the findings, the agency documents that Facebook has been (18) people's personal information with advertisers—a practice its senior executives have (19) sworn it does not indulge in. The FTC also says that the firm failed to make photos and videos on deactivated and deleted user accounts (20) after promising to do so. (295 words)
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单选题Which of the following best summarizes the author's evaluation of Bailyn's fourth proposition?
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单选题The best title for the text might be
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单选题{{B}}Text 4{{/B}} Nuclear power's danger to health, safety, and even life itself can be summed up in one word: radiation. Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can't detect them, sense them, without a radio receiver. Similarly, we can't sense radio activity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. At very high levels, radiation can kill an animal or human being outright by killing masses of cells in vital organs. But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be significant. This is the case when only a few cells are hit. And if they are killed outright, your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in a deformed way. They can grow into cancer. Sometimes this does not show up for many years. This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the victim being aware at the time that damage has occurred. A person can he irradiated and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or liable to serious illness as a result of radiation absorbed by its grandparents. Radiation can hurt us. We must know the truth.
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