阅读理解Passage Two Industrial fishing for krill in the unspoiled waters around Antarctica is threatening the future of one of the worlds last great wildernesses, according to a new report

阅读理解Navigation computers, now sold by most car-makers, cost $ 2,000 and up. No surprise, then, that they are most often found in luxury cars, like Lexus, BMW and Audi. But it is a developing technology — meaning prices should eventually drop — and the market does seem to be growing. Even at current prices, a navigation computer is impressive. It can guide you from point to point in most major cities with precise turn-by-turn directions — spoken by a clear human-sounding voice, and written on a screen in front of the driver. The computer works with an antenna (天线) that takes signals from no fewer than three of the 24 global positioning system (GPS) satellites. By measuring the time required for a signal to travel between the satellites and the antenna, the car''s location can be pinned down within 100 meters. The satellite signals, along with inputs on speed from a wheel-speed sensor and direction from a meter, determine the car''s position even as it moves. This information is combined with a map database. Streets,　landmarks and points of interest are included. Most systems are basically identical. The differences come in hardware — the way the computer accepts the driver''s request for directions and the way it presents the driving instructions. On most systems, a driver enters a desired address, motorway junction or point of interest via a touch screen or disc. But the Lexus screen goes a step further: you can point to any spot on the map screen and get directions to it. BMW''s system offers a set of cross hairs (瞄准器上的十字纹) that can be moved across the map (you have several choices of map scale) to pick a point you''d like to get to. Audi''s screen can be switched to TV reception. Even the voices that recite the directions can differ, with better systems like BMW''s and Lexus''s having a wider vocabulary. The instructions are available in French, German, Spanish, Dutch and Italian, as well as English. The driver can also choose parameters for determining the route: fastest, shortest or no freeways (高速公路) , for example.

阅读理解It''s a lesson understood by anyone who''s read the story of the Three Little Pigs: the stronger you build a house, the less likely it is to blow away when a wolf — or a hurricane— starts huffing and puffing. So as builders begin reconstructing the homes destroyed by Katrina, they''re taking steps to increase the odds that the new houses will survive future storms. Says engineer Tim Reinhold of the Institute for Business and Home Safety: "[Builders] need to be thinking about how you''d build this house if you were going to hold it upside down and shake it, to keep things from falling off." Before Katrina, neither Mississippi nor Louisiana had statewide building codes. Last fall Louisiana adopted one, modeled partly on practices used in Miami-Dade County, Fla., which requires more hurricane-protection measures than anywhere else in the United States. In Louisiana, framing carpenters now use metal clips to supplement the nails that hold roof frames to walls. Builders wrap the entire house in plywood, underneath the siding, instead of the foam insulation that some previously used as sheathing. On the roof, they''re using more nails and gluing down the corners of shingles. To protect windows, builders are choosing between pricey impact-resistant (抗冲击) glass or, more frequently, installing bolts on window frames and pre-cutting custom plywood shutters, which the new homeowner can fasten on when hurricane warnings are announced. The new building practices won''t prevent flood damage, which caused more harm than Katrina''s winds. Protecting homes from storm water requires rebuilding outside of flood plains, or at higher elevations (often on stilts). That remains controversial: last week the Biloxi City Council rejected the recommendation of the Federal Emergency Management Agency to expand the city''s flood-plain map, and to increase the elevation for homes from 13 feet above likely flood levels up to 18 to 25 feet. "How would you like to tell your 80-year-old constituent that she was now going to have to climb up 18 feet of stairs ... to get in and out of her house?" says councilman Mike Fitzpatrick. The extra protection comes at a cost. New Orleans builder Randy Noel says the codes are adding about 8 percent to the expense of the homes he''s building. A study by Louisiana State University, however, found that if Mississippi enacted a Miami-style building code, it could save $3.1 billion in damages in a future Category 3 hurricane. Says Noel: "It may be overkill, but if it makes the insurance guys happy and makes them want to cover us, it isn''t that big a deal." The next time hurricane winds start huffing and puffing, new homeowners may be able to rest a little easier.

阅读理解I am not sure that I can draw an exact line between wit and humor (perhaps the distinction is so subtle that only those persons can decide who have long white beards), but even an ignorant person may express an opinion in this matter. I am quite positive that humor is the more comfortable and livable quality, for humorous persons, if their gift is genuine and not a mere shine upon the surface, are always agreeable companions. They have pleasant mouths turned up at the corners, to which the great Master of Marionettes has fixed the strings and he holds them in his nimblest fingers to twitch them at the slightest jest. But the mouth of a merely witty man is hard and sour. Nor is the flash from a witty man always comforting, but a humorous man radiates a general pleasure. I admire wit, but I have no real liking for it; it has been too often employed against me, whereas humor is always an ally. It never points an impertinent finger into my defects. A wit''s tongue, however, is as sharp as a donkey''s stick -I may gallop the faster for its prodding, but the touch behind is too persuasive for any comfort. Wit is a lean creature with a sharp inquiring nose, whereas humor has a kindly eye and a comfortable girth. Wit has a better voice in a solo, but humor comes into the chorus best. Wit keeps the season''s fashions and is precise in the phrases and judgments of the day, but humor is concerned with homely eternal things.

阅读理解The most noticeable trend among today''s media companies is vertical integration an attempt to control severed related aspects of the media business at once, each part helping the other. Besides publishing magazines and books, Time Warner, for example, owns Home Box Office (HBO), Warner movie studios, various cable TV systems throughout the United States and CNN as well. The Japanese company Matsushita owns MCA Records and Universal Studios and manufactures broadcast production equipment. To describe the financial status of today''s media is also to talk about acquisitions. The media are buying and selling each other in unprecedented numbers and forming media groups to position themselves in the marketplace to maintain and increase their profits. In 1986 ,the first time a broadcast network had been sold, two networks were sold that year ABC and NBC. Media acquisitions have skyrocketed since 1980 for two reasons. The first is that most big corporations today are publicly traded companies, which means that their stock is traded on one of the nation stock exchanges. This makes acquisitions relatively easier. A media company that wants to buy a publicly owned company can buy that company''s stock when the stock becomes available. The open availability of stock in these companies means that anybody with enough money can invest in the American media industries, which is exactly how Rupert Murdoch joined the media business. The second reason for the increase in media alliances is that beginning in 1980,the Federal Communications Commission (FCC)gradually deregulated the broadcast media. Before 1980, for example, the FCC allowed one company to own only five TV stations, five AM radio stations, and five FM radio stations; companies also are required to hold onto a station for three years before the station could be sold. The post-1980 FCC eliminated the three-year rule and raised the number of broadcast holdings allowed for one owner. This trend of media acquisitions is continuing throughout the 1990s,as changing technology expands the market for media products. The issue of media ownership is important. If only a few corporations direct the media industries in this country, the outlets for differing political viewpoints and innovative ideas could be limited.

阅读理解Children are getting so fat they may be the first generation to die before their parents, an expert claimed yesterday. Today''s youngsters are already falling prey to potential killers such as diabetes because of their weight. Fatty fast-food diets combined with sedentary lifestyles dominated by televisions and computers could mean kids will die tragically young, says Professor Andrew Prentice, from the London School of Hygiene and Tropical Medicine. At the same time, the shape of the human body is going through a huge evolutionary shift because adults are getting so fat. Here in Britain, latest research shows that the average waist size for a man is 36～38 in and may be 42～44 in by 2032. This compares with only 32. 6 in 1972. Women''s waists have grown from an average of 22in in 1920 to 24 ins in the Fifties and 30in now. One of the major reasons why children now are at greater risk is that we are getting fatter younger. In the UK alone, more than one million under— 16s are classed as overweight or obese-double the number in the mid-Eighties. One in ten four-year-olds are also medically classified as obese. The obesity pandemic—an extensive epidemic—which started in the US, has now spread to Europe, Australia, Central America and the Middle East. Many nations now record more than 20 per cent of their population as clinically obese and well over half the population as overweight. Prof Prentice said the change in our shape has been caused by a glut of easily available high-energy foods combined with a dramatic drop in the energy we use as a result of technology developments. He is not alone in his concern. Only last week one medical journal revealed how obesity was fuelling a rise in cancer cases. Obesity also increases the risk factor for strokes and heart disease. An averagely obese person''s lifespan is shortened by around nine years while a severely obese person by many more. Prof Prentice said: "So will parents outlive their children, as claimed recently by an American obesity specialist?" The answer is yes-and no. Yes, when the offspring become grossly obese. This is now becoming an alarmingly common occurrence in the U.S. Such children and adolescents have a greatly reduced quality of life in terms of both their physical and psychosocial health. So say No to that doughnut and burger.

阅读理解How do we love tomatoes? Let''s count the ways: We love them in pasta, on pizza, in juice, in salad and soup, sliced on sandwiches, stuffed with tuna, even dried and baked in bagels, but most of all, we love them right off the vine—ripe, red, and delicious. While tomato lovers don''t need an excuse for eating them by the bushel, now there''s even more reason to savor these delicious fruits. Evidence is mounting that people who eat tomatoes have a substantially lower risk of cancer. In a 1,000-person study of eating habits and health, Harvard Medical School researchers found that those who ate tomatoes every week had the lowest chance of dying from cancer. Recently, a study of 48,000 American men showed a 21 to 34 percent lower risk of prostate cancer among those who consumed tomatoes, tomato sauce, or pizza more than twice a week. And in a study of men and women in Italy, eating seven or more servings of raw tomatoes a week was linked to a 30 to 60 percent reduction in digestive tract and prostate cancers, depending on the type of cancer. The protective qualities of the tomato are thought to come from lycopene (番茄红素), a potent antioxidant (抗氧化的) plant chemical that is abundant in tomatoes. Lycopene is responsible for the red color of tomatoes; the darker red the tomato is, the more lycopene it contains. Green and yellow tomatoes do not contain lycopene. Lycopene is also found in watermelon and pink grapefruit, but tomatoes are the most abundant source. Cooking enhances the lycopene more available. Thus, tomato sauce and paste is even a better source for lycopene than fresh raw tomatoes. Lycopene is fat soluble (可溶的) and must be consumed with a certain amount of fat to be absorbed by the body. Tomato recipes must contain a moderate amount of oil to ensure that along with a delicious taste treat, you will also be receiving all the health benefits tomatoes have to offer.

阅读理解What does the author suggest in the last paragraph?

阅读理解What does the author imply about robotics?

阅读理解The ninth-grader is advised to go to his teacher or the principal to ______.

阅读理解What is the author's attitude towards "comprehensive immigration reform"?

阅读理解Information is the primary commodity in more and more industries today. By 2005, 83% of American management personnel will be knowledge workers. Europe and Japan are not far behind. By 2005, half of all knowledge workers (22% of the labour force) will choose "flextime, flex-place" arrangements, which allow them to work at home, communicating with the office via computer networks. In the United States, the so-called "digital divide" seems to be disappearing. In early 2000, a poll found, that, where half of white households owned computers, so did fully 43% of African-American households, and their numbers were growing rapidly. Hispanic households continued to lag behind, but their rate of computer ownership was expanding as well. Company-owned and industry-wide television networks are bringing programming to thousands of locations. Business TV is becoming big business. Computer competence will approach 100% in US urban areas by the year 2005, with Europe and Japan not far behind. 80% of US homes will have computers in 2005, compared with roughly 50% now. In the United States, 5 of the 10 fastest-growing careers between now and 2005 will be computer related. Demand for programmers and systems analysts will grow by 70%. The same trend is accelerating in Europe, Japan, and India. By 2005, nearly all college texts and many high school and junior high books will be tied to Internet sites that provide source material, study exercises, and relevant news articles to aid in learning. Others will come with CD-ROMs that offer similar resources. Internet links will provide access to the card catalogues of all the major libraries in the world by 2005. It will be possible to call up on a PC screen millions of volumes from distant libraries. Web sites enhance books by providing pictures, sound, film clips, and flexible indexing and search utilities. Implications: Anyone with access to the Internet will be able to achieve the education needed to build a productive life in an increasingly high-tech world. Computer learning may even reduce the growing American prison population. Knowledge workers are generally better paid than less-skilled workers. Their wealth is raising overall prosperity. Even entry-level workers and those in formerly unskilled positions require a growing level of education. For a good career in almost any field, computer competence is a must. This is one major trend raising the level of education required for a productive role in today''s work force. For many workers, the opportunity for training is becoming one of the most desirable benefits any job can offer.

阅读理解Today, the British fleet no longer dominates the high seas: our share of the world''s merchant fleet has fallen from 40 per cent to around eight per cent. But, in terms of tonnage, the British merchant navy has continued to expand. It can now carry over two-thirds more than it could in 1914, and, almost alone among our traditional industries, shipping has remained a major success story. Unlike the rest of British industry, ship-owners invested big. In the early 1960s, the shipping companies made full use of government grants and tax concessions. Between 1966 and 1976, British shipping lines invested at a rate of over ￡ 1 million a day. By the early 1970s, it seemed that, somewhere in the world, a new British ship was being launched every week. The result is that Britain has a very modern fleet: the average age of our merchant ships is only six years, and over half the fleet is under five years old. For some time now, British shipping managers have stayed ahead of the competition by investing in the most sophisticated ships. The other major factor which has played a key role in the dominance of the British merchant navy is an institution invented by the British well over 100 years ago: the ''conference''. In the middle of the 19th century, competition between sailing-ships and steamships became cut-throat, and price-cutting ruined many long-established companies. So the ship-owners got together to establish a more settled system, and they set up a system of price fixing. In other words, every possible type of cargo had a price, which all owners agreed to charge. It was, in fact, a cartel, though the British shipowners gave it the more dignified name of a ''conference''. The system has certainly stood the test of time. Today, there are about 300 conferences governing the trade-routes of the world, and the British still play a major role. By reducing competition, shipping conferences have taken some of the risk out of the dodgy (不定的) business of moving goods by sea. They make it harder, perhaps, to make a big killing in good times, because you have to share the trade with other conference members. But they make it easier to weather the bad times, because there is no mad, competitive scramble for the available trade.

阅读理解Professor Jerald Jellison of the University of Southern California has made a scientific study of lying. According to him, women are better liars than men, particularly when telling a "white lie", such as when a woman at a party tells another woman that she likes her dress when she really thinks it looks awful. However, this is only one side of the story. Other researchers say that men are more likely to tell more serious lies, such as making a promise which they have no intention of fulfilling. This is the kind of lie politicians and businessmen are supposed to be particularly skilled at: the lie from which the liar hopes to profit or gain in some way. Research has also been done into the way people’s behavior changes in a number of small, apparently unimportant ways when they lie. It has been found that if they are sitting down at the time, they tend to move about in their chairs more than usual. To the trained observer, they are saying, "I wish I were somewhere else now". They also tend to touch certain parts of the face more often, in particular the nose. One explanation of this may be that lying causes a slight increase in blood pressure. The tip of the nose is very sensitive to such changes and the increased pressure makes it itch. Another gesture which gives liars away is what the writer Desmond Morris in his book "Man watching" calls "the mouth cover". He says there are several typical forms of this, such as covering part of the mouth with the fingers, touching the upper-lip or putting a finger of the’ hand at one side of the mouth. Such a gesture can be interpreted as all unconscious attempts on the part of the liar to stop himself or herself from lying. of course, such gestures as rubbing the nose or coveting the mouth, or squirming about in a chair cannot be taken as proof that the speaker is lying. They simply tend to occur more frequently in this situation. It is not one gesture alone that gives the liar away but a whole number of things, and in particular the context in which the lie is told.

阅读理解Imagine eating everything delicious you want — with none of the fat. That would be great, wouldn''t it? New "fake fat" products appeared on store shelves in the United States recently, but not everyone is happy about it. Makers of the products, which contain a compound called olestra, say food manufacturers can now eliminate. Critics, however, say the new compound can rob the body of essential vitamins and nutrients (营养物) and can also cause unpleasant side effects in some people. So it''s up to consumers to decide whether the new fat-free products taste good enough to keep eating. Chemists discovered olestra in the late 1960s, when they were searching for a fat that could be digested by infants more easily. Instead of finding the desired fat, the researchers created a fat that can''t be digested at all. Normally, special chemicals in the intestines(肠)"grab" molecules of regular fat and break them down so they can be used by the body. A molecule of regular fat is made up of three molecules of substances called fatting acids. The fatty acids are absorbed by the intestines and bring with them the essential vitamins A, D, E and K. When fat molecules are present in the intestines with any of those vitamins, the vitamins attach to the molecules and are carried into the bloodstream. Olestra, which is made from six to eight molecules of fatty acids, is too large for the intestines to absorb. It just slides through the intestines without being broke down. Manufacturers say it''s the ability to slide unchanged through the intestines that makes olestra so valuable as a fat substitute. It provides consumers with the taste of regular at without any bad effects on the body. But critics say olestra can prevent vitamins A, D, E and K from being absorbed. It can also prevent the absorption of carotenoids(类胡萝卜素), compounds that may reduce the risk of cancer, heart disease, etc. Manufacturers are adding vitamins A, D, E and K as well as carotenoids to their products now. even so, some nutritionists are still concerned that people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming.

阅读理解The temperature of the Sun is over 5, 000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degrees at the center. The Sun is so much hotter than the Earth that matter can exist only as a gas, except at the core. In the core of the sun, the pressures are so great against the gases that, despite high temperature, there may be a small solid core. However, no one really knows, since the center of the Sun can never be directly observed. Solar astronomers do know that the Sun is divided into five layers or zones. Starting at the outside and going down into the Sun, the zones are the corona, chromosphere, photosphere, convection zone, and finally the core. The first three zones are regarded as the Sun''s atmosphere, But since the Sun has no solid surface, it is hard to tell where the atmosphere ends and the main body of the Sun begins. The Sun''s outermost layer begins about 10,000 miles above the visible surface and goes outward for millions of miles. This is the only part of the Sun that can be seen during an eclipse such as the one in February 1979. At any other time, the corona can be seen only when special instruments are used on cameras and telescopes to shut out the glare of the Sun''s rays. The corona is a brilliant, pearly white, filmy light, about as bright as the full Moon. Its beautiful rays are a sensational sight during an eclipse. The corona’s rays flash out in a brilliant fan that has wispy spikelike rays near the Sun''s north and south poles. The corona is thickest at the sun''s equator. The corona rays are made up of gases streaming outward at tremendous speeds and reaching a temperature of more than 2 million degrees Fahrenheit. The rays of gas thin out as they reach the space around the planets. By the time the Sun''s corona rays reach the Earth, they are weak and invisible.

阅读理解What does the author think of social media as a whole?

阅读理解Less than a year ago, a new generation of diet pills seemed to offer the long-sought answer to our chronic weight problems. Hundreds of thousands of pound-conscious Americans had discovered that a drug combination known as "fen-phen" could shut off voracious appetites like magic, and the FDA had just approved a new drug, Redux, that did the same with fewer side effects. Redux would attract hundreds of thousands of new pill poppers within a few months. But now the diet-drug revolution is facing a backlash. Some of the nation''s largest HMOs, including Aetna U.S. Healthcare and Prudential Healthcare, have begun cutting back or eliminating reimbursement for both pills. Diet chains like Jenny Craig and Nutri-System are backing away from them too. Several states, meanwhile, have restricted the use of fen-phen, last week the Florida legislature banned new prescriptions entirely and called on doctors to wean current patients from the drug within 30 days; it also put a 90-day limit on Redux prescriptions. Even New Jersey doctor Sheldon Levine, who touted Redux last year on TV and in his book The Redux Revolution, has stopped giving it to all but his most obese patients. The reason for all the retrenchment: potentially lethal side effects. Over the summer, the FDA revealed that 82 patients had developed detects in their heart valves while on fen-phen, and that seven patients had come down with the same condition on Redux. As if that weren’t bad enough, physicians reported that a woman who had been taking fen-phen for less than a month died of primary pulmonary hypertension, a fatal lung condition already associated with Redux. And an article in the Journal of the American Medical Association last month confirmed earlier reports that both fen-phen and Redux can cause brain damage in lab animals. These findings led the New England Journal to publish an editorial admonishing doctors to prescribe the drugs only for patients with severe obesity. Meanwhile, FDA asked drug makers to put more explicit warnings on fen-phen and Redux labels. Since mid-July, prescriptions for fen-phen have dropped 56%, and those for Redux 36%, according to IMS America, a pharmaceutical-market research firm. All that really does, however, is to bring the numbers down to where they should have been all along. Manufacturers said from the start that their pills offered a short-term therapy for the obese, not for people looking to fit into a smaller bathing suit. FDA approved Redux with just such a caveat, and when limited to these patients, the drugs may still make sense-despite the risks-because morbid obesity carries its own dangers, including heart disease, diabetes and stroke. Too often, however, Redux and fen-phen were peddled'' to all comers, almost like candy. The current backlash, says Levine, is a "roller coaster that never should have happened."

阅读理解 Public distrust of scientists stems in part from the blurring of boundaries between science and technology, between discovery and manufacture. Most government, perhaps all governments, justify public expenditure on scientific research in terms of the economic benefits the scientific enterprise ha brought in the past and will bring in the future. Politicians remind their voters of the splendid machines ‘our scientists’ have invented, the new drugs to relieve old ailments (病痛), and the new surgical equipment and techniques by which previously intractable (难治疗的) conditions may now be treated and lives saved. At the same time, the politicians demand of scientists that they tailor their research to ‘economics needs’, that they award a higher priority to research proposals that are ‘near the market’ and can be translated into the greatest return on investment in the shortest time. Dependent, as they are, on politicians for much of their funding, scientists have little choice but to comply. Like the rest of us, they are members of a society that rates the creation of wealth as the greatest possible good. Many have reservations, but keep them to themselves in what they perceive as a climate hostile to the pursuit of understanding for its own sake and the idea of an inquiring, creative spirit. In such circumstances no one should be too hard on people who are suspicious of conflicts of interest. When we learn that the distinguished professor assuring us of the safety of a particular product holds a consultancy with the company making it, we cannot be blamed for wondering whether his fee might conceivably cloud his professional judgment. Even if the professor holds no consultancy with any firm, some people many still distrust him because of his association with those who do, or at least wonder about the source of some his research funding. This attitude can have damaging effects. It questions the integrity of individuals working in a profession that prizes intellectual honesty as the supreme virtue, and plays into the hands of those who would like to discredit scientists by representing then a venal (可以收买的). This makes it easier to dismiss all scientific pronouncements, but especially those made by the scientists who present themselves as ‘experts’. The scientist most likely to understand the safety of a nuclear reactor, for example, is a nuclear engineer declares that a reactor is unsafe, we believe him, because clearly it is not to his advantage to lie about it. If he tells us it is safe, on the other hand, we distrust him, because he may well be protecting the employer who pays his salary. Public distrust of scientists stems in part from the blurring of boundaries between science and technology, between discovery and manufacture. Most government, perhaps all governments, justify public expenditure on scientific research in terms of the economic benefits the scientific enterprise ha brought in the past and will bring in the future. Politicians remind their voters of the splendid machines ‘our scientists’ have invented, the new drugs to relieve old ailments (病痛), and the new surgical equipment and techniques by which previously intractable (难治疗的) conditions may now be treated and lives saved. At the same time, the politicians demand of scientists that they tailor their research to ‘economics needs’, that they award a higher priority to research proposals that are ‘near the market’ and can be translated into the greatest return on investment in the shortest time. Dependent, as they are, on politicians for much of their funding, scientists have little choice but to comply. Like the rest of us, they are members of a society that rates the creation of wealth as the greatest possible good. Many have reservations, but keep them to themselves in what they perceive as a climate hostile to the pursuit of understanding for its own sake and the idea of an inquiring, creative spirit. In such circumstances no one should be too hard on people who are suspicious of conflicts of interest. When we learn that the distinguished professor assuring us of the safety of a particular product holds a consultancy with the company making it, we cannot be blamed for wondering whether his fee might conceivably cloud his professional judgment. Even if the professor holds no consultancy with any firm, some people many still distrust him because of his association with those who do, or at least wonder about the source of some his research funding. This attitude can have damaging effects. It questions the integrity of individuals working in a profession that prizes intellectual honesty as the supreme virtue, and plays into the hands of those who would like to discredit scientists by representing then a venal (可以收买的). This makes it easier to dismiss all scientific pronouncements, but especially those made by the scientists who present themselves as ‘experts’. The scientist most likely to understand the safety of a nuclear reactor, for example, is a nuclear engineer declares that a reactor is unsafe, we believe him, because clearly it is not to his advantage to lie about it. If he tells us it is safe, on the other hand, we distrust him, because he may well be protecting the employer who pays his salary. 文章大意：议论文。本文首段提出中心论点，公众开始不相信科学家了。造成这一现象的原因是政府把科研和经济效益挂钩，使得科学家们不得不按照经济需求来进行研究。第二段是说公众怀疑科学家的论断是情有可原的，因为他们的论断可能受到为他们提供科研经费的单位的影响。第三段说公众的这种态度会产生非常不好的后果，即很容易使公众不相信科学家的所有论断。

阅读理解What can be inferred from Yudell's remark in the last paragraph?