单选题The losing candidate immediately after the polls had closed. A. confessed B. conceded C. concurred D. admitted

单选题3 The word science is heard so often in modern times that almost everybody has some notion of its meaning. On the other hand, its definition is difficult for many people. The meaning of the term is confused, but everyone should understand its meaning and objec tives. Just to make the explanation as simple as possible, suppose science is defined as clas- sified knowledge (facts). Even in the true sciences distinguishing fact from fiction is not always easy. For this reason great care should be taken to distinguish between beliefs and truths. There is no danger as long as a clear difference is made between temporary and proved explana tions. For example, hypotheses and theories are attempts to explain natural phenome na. From these positions the scientist continues to experiment and observe until they are proved or discredited. The exact status of any explanation should be clearly labeled to avoid confusion. The objectives of science are primarily the discovery and the subsequent understanding of the unknown. Man cannot be satisfied with recognizing that secrets exist in nature or that questions are unanswerable; he must solve them. Toward that end specialists in the field of biology and related fields of interest are directing much of their time and energy. Actually, two basic approaches lead to the discovery of new information. One, aimed at satisfying curiosity, is referred to as pure science. The other is aimed at using knowl edge for specific purposes--for instance, improving health, raising standards of living, or creating new consumer products. In this case knowledge is put to economic use. Such an ap proach is referred to as applied science. Sometimes practical-minded people miss the point of pure science in thinking only of its immediate application for economic rewards. Chemists responsible for many of the dis coveries could hardly have anticipated that their findings would one day result in application of such a practical nature as those directly related to life and death. The discoveries of one bit of information opens the door to the discovery of another. Some discoveries seem so sim ple that one is amazed they were not made years ago; however, one should remember that the construction of the microscope had to precede the discovery of the cell. The host of sci entists dedicating their lives to pure science are not apologetic about ignoring the practical side of their discoveries; they know from experience that most knowledge is eventually ap plied.

单选题 It's been an extraordinarily bad week for Apple, the well-known American manufacturer of computers and software. In their quarterly report, the company announced a $ 45 million lose for the three months ending this September. At the same time, the economics magazine Business Week stated that Apple had one of the eight worst hoards of directors in the US. All the while, the firm's chief executive, Steve Jobs, was drawing the highest salary in corporate America. News like that brings out the experts with their predictions of a collapse--and their "evidence" is abundant. Apple has allowed market share compared to most of its competitors. In 1996, when Gil Amelio was brought in as chief executive, Apple's market share hovered at 7%: Today, its market share is below 3.5%. With Mike Spindler and Gil Amelio running the business the company was plagued by quality problems. Its high specifications laptop, PowerBook 5300, was known as the "flaming book" for its inclination to burst into flames. The company is notoriously had at forecasting. In 1999, it underestimated demand for its PowerPC-based desktops forcing buyers towards its competitors Dell and IBM. Then it overestimated demand in 2000 and 2001, which cast the company $ 1 billion. Surely Apple is about to slide into the footnotes of technology history? First, from a financial perspective, it won't with $ 4. 3 billion in cash and a loyal customer base. It would take almost unimaginable mismanagement. It is true that Apple has lost any operating system battle with its unstoppable rival Microsoft. However the internet has meant that outside of games, the operating system is less and less an issue as now the same information can be viewed and similar software can be transferred across a wide vairiety of platforms. Second, it isn't just how many customers you have that counts. It is also how well connected they are. My informal survey of the group tells me that Apple attracts journalists, consultants and those for whom having the latest technology is not just desirable but an obsession. In fact, for those who care about which is the best operating system, it's not Microsoft Window. It's Apple's late operating system, OS X. This is already the favorite choice for graphics applications: the one that powers most large websites and the internet in general. More important, there is also a growing trend among software developers who have opted for Appel's portables rushing Mac OSX. Californian journalist Jon Udell reckons that Apple may be about to break into the highly profitable markets of small companies and homes. Many large enterprises have started to investigate a variety of systems as a desktop replacement to Windows. Some, like the Scottish police, have taken the plunge and opted for one of those alternatives. And that was before the arrival of the most consumer-friendly operating system of them all. Apple's OSX now being on trial by the Dutch civil service. Should the software break into the enormous American market, large profits are sure to follow. That isn't to say that Apple hardware is going to surge into corporations and leave Microsoft a long way behind. Far from it, the Microsoft share of market will hold fast. But it means that Apple's value proposition is increasingly attractive to customers, whether large or small. Apple still excels at developing new markets, just as it did with publishing and video editing. With OSX, groundbreaking developments are commonplace. Currently, the best web-based news service is Net News Wire Lite, available only to Apple users. Delivering news more quickly and fully than anyone else is the key race being run in an emerging market that will continue to grow according to worldwide surveys of online habits. Things are more different for Apple now than in 1997, when surfing the web on an Apple normally ended in a system crash. Apple is also at the forefront of digital media: this year, its digital music player the iPod will have had a 15% share of the market. This and similar products are merely the first step. Big rewards are expected to follow us to Apple's highly user-friendly software for working with writable CDs and DVDs.

单选题The minister ______ the latest crime figures as proof of the need for more police.

单选题Martin asked his professor for some comments on his report but it was ______.

单选题Although economists have traditionally considered the district to be solely an agricultural one, the ______ of the inhabitants' occupations makes such a classification obsolete.

单选题{{B}}Passage Five{{/B}} As students return to school this fall, parents will again worry about new illnesses as kids come into contact with flu germs. There are other risks they should worry about—illnesses caused by the common bugs and rodents found in school buildings. Perhaps the even more dangerous pests however are those individuals who prevent school administrators from swiftly addressing these problems. Anti-chemical activists have pushed, and nearly 20 states and local governments have passed, 1 aws to eliminate or drastically reduce the use of pesticides in schools. Yet pesticides are used to control roaches, mice, rats, mosquitoes, and other pests. The public health implications of allowing these things to get out of control should be obvious: increased allergies and illnesses related to insect and rodent bites. Some states have passed a seemingly more reasonable policy that demands that school administrators provide notification 48 to 72 hours before using pesticides. But such laws allow problems to escalate during wailing periods when an urgent response is warranted. Notification paperwork burdens also consume limited financial resources. Journalist Steve Milloy reported that the notification law of Maryland costs the state's schools $32.000 annually. Parents should fear these laws and the pests they harbor more than the pesticides. Environmental Protection Agency (EPA) pesticide standards are so exceedingly cautious that the risks are tiny when the product is used according to label directions. An analysis done by the University of Texas found that the EPA's risk estimates overstate pesticide exposure damage at a level hundreds of thousands of times greater than the risk of actual exposure. Meanwhile, many of the pests in schools pose serious risks. Allergies and asthma are a particular concern. According to one study published in Environmental Health Perspectives: "Allergens associated with dust mites and cockroaches are probably important in both onset and worsening of asthma symptoms for children who are chronically exposed to these agents." Cockroach allergies are particularly problematic. Children who suffered from this type of allergy missed more days of school and lost more sleep than children suffering from other allergies. Prudent use of chemicals—not reduced pesticide use—can be a big part of the solution. A study in the Journal of Allergies and Clinical Immunology showed that use of chemical baits and regular cleaning can reduce indoor cockroach allergens to levels below that which causes allergies. If people are truly concerned about public health in schools, it's time to start looking at priorities. Rather than liberate the pests, they should liberate the schools from silly government regulations and dangerous vermin.

单选题Colour-blind people often find it difficult to ______ between blue and green. (2003年西南财经大学考博试题)

单选题Which of the following types of ethnic cultural expression is discussed in the passage?

单选题We can conclude from the passage that ______.

单选题The recent economic crisis has brought about a______in world trade.

单选题Already lasers can obliterate skin blemishes, topically applied drugs can smooth facial lines and injected agents can remove deep wrinkles. Future products will be faster, better and longer lasting. "New substances will be developed by entrepreneurs," says Brian Mayou, an aesthetic plastic surgeon, "that will be more successful than liquid silicone that we use today to eradicate wrinkles." The next major breakthrough, says Mel Braham, plastic surgeon and chief executive of the Harley Medical Group, will be laser treatment that needs no recovery period. Nicholas Lowe, clinical professor of dermatology at the University of Los Angeles, adds: "There will be more efficient anti-oxidants to help reduce sun damage and aging. There will also be substances that increase the production of new collagen and elastic tissue to maintain the elasticity of youthful skin." Lee Shreider, a research cosmetic chemist, says that we may be able to look better without any kind of operation as semi-permanent make-up gets better. "Crooked noses will be improved by effectively sealing on shaded colors that either enhance or subdue areas of the face. We will be able to straighten eyebrows and lips making the face more metrical—which remains one of the keys to beauty, and even close blocked pores with permanent, custom-designed foundation." The development of the safe Sun tan is a potential gold mine. Being researched at the University of Arizona, but a long way from reality, is the injectable tan. Professor Lowe is optimistic: "There will almost certainly be a safe way of developing a sunless tan that protects against sun damage. In animal research, we've applied creams to guinea pigs that can actually 'turn on' some of the genes that produce pigmentation without any sunlight exposure./

单选题It is implied in the last paragraph that in approaching socio-cultural content in a dictionary, special thought should be given to ______.

单选题Many of the students have a grasp of the main structures, a reasonable vocabulary and a(n)______idea of how to pronounce most words they come across. A. faint B. vague C. obscure D. rough

单选题Although some schools are postponing new projects because of the faltering economy, others are forging ahead with plans to emulate freshman programs that have long existed at some of the nation's oldest colleges. A. surpass B. imitate C. scramble D. expand

单选题Generation gaps are nothing new. Imperfect communication between age groups plagued the ancient Greeks and current works alike. Many an older worker chafes at an under-30 colleague who surfs the Internet, listens to his Sony Walkman and chats on the phone or with his desk mate, all while working on a project due in an hour. Sometimes, of course, he isn't corking, and that's a whole different issue. But sometimes he is getting lots of great stuff done. In the meantime, the different work styles create a case of "Would you please shut up" vs. "Lighten up. Get a life" Marc Prensky, vice president of Bankers Trust and founder of its interactive learning subsidiary, Corporate Gameware, was on point in Across the board, a publication of the conference board. The business research organization titled Prensky's article "Twitch Speed," a reference to the fast pace of video game play. Today under-30 workers likely grew up in a multimedia, technology-rich, twitch-speed environment. Prensky says they simultaneously did homework, watched TV and listened to music; this exposure changed the ways they receive and process information. Baby boomers and older workers may or may not have done homework by TV, but much else has changed. Sociologists say the over-30s are more likely to want room doors close. TV off, one thing happening at a time, quiet, please! When the two heritages clash in the workplace, it pits comfort with speed and "multitasking" against comfort with deliberation and focused concentration. Sound familiar? If the gap has become a chasm in your workplace, it's time to talk. Both work styles can be productive, but both sides need to make accommodations so the other's productivity isn't impaired.

单选题The basic causes are unknown though certain conditions that may lead to cancer have been______.

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