单选题When we watch a play or a film, we all realize that the characters are sometimes ______. A. imaginative B. imaginable C. imagined D. imaginary

单选题On February 10, the world of psychiatry will be asked, metaphorically, to lie on the couch and answer questions about the state it thinks it is in. For that is the day the American Psychiatric Association (APA) plans to release a draft of the fifth version of its Diagnostic and Statistical Manual of Mental Disorders (DSM-V). Mental illness carrying such stigma (~) as it does, and the brain being as little-understood as it is, revising the DSM is always a controversial undertaking. This time, however, some of the questions asked of the process are likely to be particularly probing. The DSM, the first version of which was published in 1952, lists recognized psychological disorders and the symptoms used to diagnose them. In the United States, what is in it influences whether someone will be diagnosed with an illness at all, how he will be treated if he is so diagnosed, and whether his insurance company will pay for that treatment. Researchers in other countries generally defer to the DSM, too, making the manual's definitions a lingua franca for the science of medical psychology. And, perhaps most profoundly, the DSM, then, is an important document. The APA has been working on the latest revision since 1999, and will not release the final version until May 2013. But some people are already accusing it of excessive secrecy and being too ambitious about the changes it proposes. Those critics will be picking over the draft next week to see if their fears have been realized. The original DSM reflected the "psychodynamic" view of mental illness, in which problems were thought to result from an interplay between personality and life history. (Think Freud, Jung and long hours recounting your childhood and dreams.) The third version, which was published in 1980, took a more medical approach. Mental illnesses were seen as distinct and classifiable, like physical diseases. DSM-Ⅲ came with checklists of symptoms that allowed straightforward, unambiguous diagnosis. Psychiatry began to seem less like an art form and more like a science. DSM-Ⅲ also introduced many more diagnoses than had appeared before. These included attention-deficit disorder, post-traumatic stress disorder and social phobia. In fact, the number of specific diagnoses more than doubled between DSM-Ⅰ and DSM-Ⅲ, from 106 to 265. DSM-IV, published in 1994, increased the number to 267, but left the underlying model alone.

单选题Crew chiefs supervised engines, switches and lights that told them how each item of equipment was functioning. A. observed B. preserved C. monitored D. nurtured

单选题The family was too {{U}}obstinate{{/U}} to evacuate the house when the flood began.

单选题During their first teacher training year, the students often visited schools for the ______ of lessons.

单选题Remember that customers don't ______ about prices in that city. A. debate B. consult C. dispute D. bargain

单选题As if they didn't have their hands full with Iraq and terrorism, U. S. intelligence agencies are being drawn into the debate over whether the United States is imminently threatened by a deadly outbreak of bird influenza and whether the Bush administration has adequately prepared for such an epidemic. Over the last two weeks, the administration has held bird flu briefings classified "Top Secret/Sensitive Compartmented Information" for members of both houses of Congress. A counterterrorism official indicated that the intelligence community is also studying whether it would be possible for terrorists to somehow exploit the avian flu virus and use it against the United States, though there is no evidence that terrorists have in any way tried to do so. The World Health Organization is warning that if a pandemic (a disease for which there is no certain treatment and to which humans have no natural immunity.) outbreak occurs, "at least 30 million people worldwide could require hospitalization, and at least 2 million people could die." The alarming figures like these in recent weeks caught the attention of President George W. Bush and other White House aides. An intelligence official said, "The briefings did contain classified information. The reason the information is classified is because some of it was acquired through clan-destine means." A leading public-health expert, Dr. Irwin Redlener, said, "This is old-fashioned cold war secrecy being applied to a public-health issue-a very bad idea." Redlener has criticized President Bush and other administration officials for hinting recently that in the event of a pandemic bird flu outbreak, the federal government might rely heavily on the military to establish quarantine zones and restrict public movement to limit the possible spread of disease. Despite HSN1 (a bird flu strain) is reported mortality rate of 50 percent or more, Dr. Redlener says that by the time such a virus did arrive in the United States, its strength might be significantly degraded. But he notes that in the case of the 1918 Spanish flu, the eventual mortality rate of the virus turned out to be around 2 percent, yet millions still died. What is vexing the Bush administration and other public-health professionals is the fact that the United States is not particularly well prepared in the event a bird flu pandemic does strike in the near future. HHS (Department of Health and Human Services) Secretary Mike Leavitt is currently on a trip to several countries in Asia to get a firsthand look at measures some countries are taking to contain the spread of known bird flu cases. The best defense against a deadly flu pandemic would be stopping it where it starts.

单选题{{B}}Passage Four{{/B}} Another trend of the 1990s in the computer industry is toward multimedia formats, as the market for conventional types of computer--those that have computation and data processing as their major functions--has begun to become saturated. Multimedia computers are systems that can process graphics, sound, video, and animation in addition to traditional data processing. Videocassette recorders, televisions, telephones, and audiocassette players have recently undergone a change in technology from analog to digital formats. Television images, for example, can be processed by computer programs once they have been converted to digital signals, while those in conventional analog signals cannot. In other words, digital video images can be zoomed up or down, reshaped, or rearranged by the appropriate software. Also, due to advances in video-signal compression technology, the memory space required for storing a video program has been greatly reduced. Multimedia has important applications for consumer products and for business needs. Video scenes that are captured by camcorders can be combined with text, sound, and data and can be viewed on television sets in homes, schools, or offices. These multimedia presentations are becoming useful educational and commercial tools. For example, there are available encyclopaedias that contain video programs depicting animal behavior, geomorphic processing, and other natural phenomena. Automobile mechanics can watch videos that demonstrate how to repair new models. In business applications, documents can be annotated with 7oice or video. New consumer products can be more effectively marketed by demonstrating how they can be used. CD-ROMs of numerous other subjects have been recently published; all of them can be viewed on TV monitors using multimedia computers. These multimedia computer systems can, in turn, be incorporated into computer networks, enhancing the effectiveness of communication. This multitude of new products and capabilities has been made possible by the tremendous progress of microprocessor technology. Because of the advances in this area, personal computers have become more powerful, smaller, and less expensive, which has enabled computer networks to proliferate. Many of the tasks that were traditionally performed by mainframes have been transferred to personal computers connected to communications networks. Although the mainframe continues to be produced and serves a useful purpose, it has been used more often as one of many different computers and peripheral devices connected to computer networks. In this new role, the function of mainframes as powerful processors of database systems is becoming important, and, as a result, massively parallel computers with hundreds or thousands of microprocessors are being produced. In addition to being powerful, the microprocessors used for this purpose must be inexpensive, but low costs can be achieved only if they are mass-produced. Throughout the world, more than 100, 000, 000 personal computers and 500, 000 workstations are in use, whereas only several hundred supercomputers are in operation; the numbers of mainframes and minicomputers fall somewhere between those of supercomputers and workstations. Because of such high-volume production, microprocessors for personal computers or workstations tend to be inexpensive and are available for use in massively parallel computers as well.

单选题In the first year or so of Web business, most of the action has revolved around efforts to tap the consumer market. More recently, as the Web proved to be more than a fashion, companies have started to buy and sell products and services with one another. Such business to business sales make sense because business people typically know what product they're looking for. Nonetheless, many companies still hesitate to use the Web because of doubts about its reliability. "Businesses need to feel they can trust the pathway between them and the supplier," says senior analyst Blane Erwin of Forrester Research. Some companies are limiting the risk by conducting online transactions only with established business partners who are given access to the company's private intranet. Another major shift in the model for Internet commerce concerns the technology available for marketing. Until recently, Internet marketing activities have focused on strategies to "pull" customers into sites. In the past year, however, software companies have developed tools that allow companies to "push" information directly out to consumers, transmitting marketing messages directly to targeted customers. Most notably, the PointCast Network uses a screen saver to deliver a continually updated stream of news and advertisements to subscribers' computer monitors. Subscribers can customize the information they want to receive and proceed directly to a company's Web site. Companies such as Virtual Vineyards are already starting to use similar technologies to push messages to customers about special sales, product offerings, or other events. But push technology has earned the contempt of many Web users. Online culture thinks highly of the notion that the information flowing onto the screen comes there by specific request. Once commercial promotion begins to fill the screen uninvited, the distinction between the Web and television fades. That's a prospect that horrifies Net purists. But it is hardly inevitable that companies on the Web will need to resort to push strategies to make money. The examples of Virtual Vineyards, Amazon. com, and other pioneers show that a Web site selling the right kind of products with the right mix of interactivity, hospitality, and security will attract online customers. And the cost of computing power continues to free fall, which is a good sign for any enterprise setting up shop in silicon. People looking back 5 or 10 years from now may well wonder why so few companies took the online plunge.

单选题I was told that the woman was indifferent ______ hardships and dangers.

单选题 The patient complained that his doctor had been negligent in not giving him a full examination.

单选题Captain Sentry retired to the country because he was ______.

单选题Ball-players, runners, boxers, swimmers, etc are______.

单选题By the end of the Middle Ages the technological systems called cities had long since become a central feature of Western life. In 1600 London and Amsterdam each had populations of more than, 100,000, and twice that number 1 in Paris. Also, the Dutch, English, Spanish, and French were beginning to 2 global empires. 3 and trade produced a 4 merchant class that helped to 5 an increasing desire for such 6 as wine, coffee, tea, cocoa, and tobacco. These merchants set a 7 of life aspired to by the wider populace. 8 the beginning of the 18th century, capital resources and banking systems were well enough established in Great Britain to 9 investment in mass-production 10 that would satisfy some of these middle-class aspirations. The Industrial Revolution 11 in England, because that nation had the technological means, government encouragement, and a large and varied trade 12 . The first factories 13 . in 1740, concentrating on 14 . production. In 1740 the majority of English people wore woolen garments, bu 15 . the next 100 years the rough, often waterlogged and unhealthy woolens were 16 . by cotton—especially after the 17 . of the cotton gin (轧棉机) by Eli Whitney, an American, in 1793. One of the most important innovations in the weaving process was 18 . in France in 1801 by Joseph Jacquard; his loom used cards with holes punched in them to determine the placement of threads in the warp (弯夹撬棍). This use of punched cards inspired the British mathematician Charles Babbage to attempt to 19 . a calculating machine based on the same principle. Although this machine never became fully practical, it 20 . the great computer revolution of the 20th century.

单选题There is only one difference between an old man and a young one: the young one has a glorious future before him and the old one has a______future behind him.

单选题On______ to power the new President announced a program of social reforms.

单选题Don't trust the speaker any more, since his deeds are never compatible with his ideology.