单选题A specialist is ______.

单选题Both police officers and high officials here are susceptible to corruption(清华大学2006年试题)

单选题A corps of so-called barefoot doctors are trained in hygiene, preventive medicine, acupuncture, and routine treatment of common diseases. A. nutrition B. sanitation C. nursery D. welfare

单选题We all argued with him not to sign that contract, but to no______.

单选题If we continue to destroy the countryside, many more animals will become ______.

单选题A major role of computer science has been to Ualleviate/U problems, mainly by making computer systems cheaper, faster, more reliable, and easier to use.

单选题Mr. Smith asked me to ______ him to you and your wife.

单选题The business was forced to close down for a period but was ______ revived.

单选题Among picture books for 4—8 years olds, several outstanding works appeared that combined original stories with______illustrations.(浙江大学2010年试题)

单选题(略){{B}}Part Ⅱ Reading Comprehension{{/B}}There are four passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the centre. In a purely biological sense, fear begins with the body's system for reacting to things that can harm us-- the so-called fight-or-flight response. "An animal that can't detect danger can't stay alive. "says Joseph LeDoux. Like animals, humans evolved with an elaborate mechanism for processing information about potential threats. At its core is a cluster of neurons (神经元)deep in the brain known as the amygdala(扁桃棱). LeDoux studies the way animals and humans respond to threats to understand how we form memories of significant events in our lives. The amygdala receives input from many parts of the brain, including regions responsible for retrieving memories. Using this information, the amygdala appraises a situation I think this charging dog wants to bite me--and triggers a response by radiating nerve signals throughout the body. These signals produce the familiar signs of distress: trembling, perspiration and fast--moving feet, just to name three. This fear mechanism is critical to the survival of all animals, but no one can say for sure whether beasts other than humans know they're afraid. That is all LeDoux says," if you put that system into a brain that has consciousness, then you get the feeling of fear." Humans, says Edward M. Hallowell, have the ability to call up images of bad things that happened in the past and to anticipate future events. Combine these higher thought processes with our hardwired danger-detection systems, and you get a near-universal human phenomenon: worry. That's not necessarily a bad thing, says Hallowell. "When used properly, worry is an incredible device. "he says. After all, a little healthy worrying is okay if it leads to constructive action--like having a doctor look at that weird spot on your back. Hallowell insists, though, that there's a right way to worry. "Never do it alone, get the facts and then make a plan." he says. Most of us have survived a recession, so we're familiar with the belt-tightening strategies needed to survive a slump. Unfortunately, few of us have much experience dealing with the threat of terrorism, so it's been difficult to get facts about how we should respond. That's why Hallowell believes it was okay for people to indulge some extreme worries last fall by asking doctors for Cipro(抗炭疽茵的药物)and buying gas masks.

单选题When it comes to the slowing economy, Ellen Spero isn"t biting her nails just yet. But the 47-year-old manicurist isn"t cutting, filing or polishing as many nails as she"d like to, either. Most of her clients spend $12 to $50 weekly, but last month two longtime customers suddenly stopped showing up. Spero blames the softening economy. "I"m a good economic indicator," she says. "I provide a service that people can do without when they"re concerned about saving some dollars." So Spero is downscaling, shopping at middle-brow Dillard"s department store near her suburban Cleveland home, instead of Neiman Marcus. "I don"t know if other clients are going to abandon me, too," she says. Even before Alan Greenspan"s admission that America"s red-hot economy is cooling, lots of working folks had already seen signs of the slowdown themselves. From car dealerships to Gap outlets, sales have been lagging for months as shoppers temper their spending. For retailers, who last year took in 24 percent of their revenue between Thanksgiving and Christmas, the cautious approach is coming at a crucial time. Already, experts say, holiday sales are off 7 percent from last year"s pace. But don"t sound any alarms just yet. Consumers seem only mildly concerned, not panicked, and many say they remain optimistic about the economy"s long-term prospects even as they do some modest belt-tightening. Consumers say they"re not in despair because, despite the dreadful headlines, their own fortunes still feel pretty good. Home prices are holding steady in most regions. In Manhattan, "There"s a new gold rush happening in the $4 million to $10 million range, predominantly fed by Wall Street bonuses," says broker Barbara Corcoran. In San Francisco, prices are still rising even as frenzied overbidding quiets. "Instead of 20 to 30 offers, now maybe you only get two or three," says John Tealdi, a Bay Area real-estate broker. And most folks still feel pretty comfortable about their ability to find and keep a job. Many folks see silver linings to this slowdown. Potential home buyers would cheer for lower interest rates. Employers wouldn"t mind a little fewer bubbles in the job market. Many consumers seem to have been influenced by stock-market swings, which investors now view as a necessary ingredient to a sustained boom. Diners might see an upside, too. Getting a table at Manhattan"s hot new Alain Ducasse restaurant used to be impossible. Not anymore. For that, Greenspan & Co. may still be worth toasting.

单选题{{B}}Ⅱ{{/B}}Read the following passage carefully and then paraphrase the numbered and underlined parts. ("Paraphrase" means "to explain the meaning in your own English". ) The greatest results in life are attained by simple means, and the exercise of ordinary qualities. The common life of every day, with its cares, necessities, and duties, affords ample opportunity for acquiring experience of the best kind; and(51){{U}}its most beaten paths provide the true worker with abundant scope for effort and room for self-improvement.{{/U}} (52){{U}} The road of human welfare lies along he old highway of steadfast well-doing;{{/U}} and they who are the most persistent, and work in the truest spirit, will usually be the most successful. Fortune has often been blamed for her blindness; but fortune is not so blind as men are. (53){{U}}Those who look into practical life will find that fortune is usually on the side of the industrious, as he winds and waves are on the side of the best navigators.{{/U}} In the pursuit of even the highest branches of human inquiry, the commoner qualities are found the most useful -- such as common sense, attention, application, and perseverance. Genius may not be necessary, though even genius of the highest sort does not disdain the use of these ordinary qualities. (54){{U}}The very greatest men have been among the least believers in the power of genius, and as worldly wise and persevering as successful men of the commoner sort.{{/U}} (55){{U}} Some have even defined genius to be only common sense intensifies.{{/U}} A distinguished teacher and resident of a college spoke of it as the power of making efforts. John Foster held it to be the power f lighting one's own fire. Buffon said of genius "it is patience".

单选题Years ago, people would have ______ the notion that robots would operate on patients instead of surgeons. A. smiled on B. beamed upon C. laughed at D. amused with

单选题What is the chief purpose of double majors?

单选题California seems to be the home of the homeless since many are often observed {{U}}tramping{{/U}} along railroad tracks and through the downtown areas of the cities.

单选题Internet is a vast network of computers that connects many of the world's businesses, institutions, and individuals. The internet, which means interconnected network of networks, links tens of thousands of smaller computer networks. These networks transmit huge amounts of information in the form of words, images, and sounds. The Internet was information on virtually every topic. Network users can search through sources ranging from vast databases to small electronic "bulletin boards", where users form discussion groups around common interests. Much of the Internet's traffic consists of messages sent from one computer user to another. These messages are called electronic mail or e-mail. Internet users have electronic addresses that allow them to send and receive e-mail. Other uses of the network include obtaining news, joining electronic debates, and playing electronic games. One feature of the Internet, known as the World Wide Web, provides graphics, audio, and video to enhance the information in its documents. These documents cover a vast number of topics. People usually access the Internet with a device called a modem. Modems connect computers to the network through telephone lines. Much of the Internet operates through worldwide telephone networks of fiber optic cables. These cables contain hair thin strands of glass that carry data as pulses of light. They can transmit thousands of times more data than local phone lines, most of which consist of copper wires. The history of the Internet began in the 1960s. At that time, the Advanced Research Projects Agency(ARPA)of the United States Department of Defense developed a network of computers called ARPAnet. Originally, ARPAnet connected only military and government computer systems. Its purpose was to make these systems secure in the event of a disaster or war. Soon after the creation of ARPAnet, universities and other institutions developed their own computer networks. These networks eventually were merged with ARPAnet to form the Internet. By the 1990s, anyone with a computer, modem, and Internet software could link up to the Internet. In the future, the Internet will probably grow more sophisticated as computer technology becomes more powerful. Many experts believe the Internet may become part of a larger network called the information superhighway. This network, still under development, would link computers with telephone companies, cable television stations, and other communication systems. People could bank, shop, watch TV, and perform many other activities through the network.

单选题A man-made chemical that attracts male gypsy moths by duplicating the natural attractant of female gypsy moths has been patented as No. 3,018,219. Dr. Martin Jacobson of Silver Spring, Md., assigned patent rights to the U. S. Government as represented by the Secretary of Agriculture. The chemical can be used to detect gypsy moth infestations, as well as to control the insects. The gypsy moth does serious damage to forest and shade trees in New England and eastern New York State. The caterpillars, or larvae, of gypsy moths eat the leaves of trees, often causing death by a single attack. Losses of hardwood trees have been estimated at tens of millions of dollars from a 20-year study. Gypsy moths were prevented from spreading to other U. S. forest areas by using the natural attractant of the female to detect infestations, then spraying with chemicals such as DDT to kill the insects. Since the lure could previously be obtained only by clipping the last two abdominal segments of the virgin female moth, extracting the segments with benzene and then processing to stabilize the chemical, the procedure was expensive. Another difficulty was that, as the gypsy moth population declined, it became increasingly hard to obtain the females needed for lure production. Dr. Jacobson overcame both these difficulties by discovering a synthetic method for making the female's attractant chemical. The chemical is known as 12-acetoxy-l-hydroxycis-9- octadecene. It is so potent that the fraction of a drop produced by the female is 200,000 times more than the amount needed to catch a mate. The synthetic chemical is also very powerful--it works in amounts about equivalent to one drop in a box car. The flightless female gypsy moth mates only once a year and, as soon as she does, an enzyme switches off production of the sex attractant. The winged male, however, call mate several times and it is because of this that the chemical is being used for pest control. By using a mixture of attractant and DDT in traps lined with a sticky substance, enough males can be caught to reduce the gypsy moth population substantially.

单选题We all have offensive breath at one time or another. In most cases, offensive breath emanates from bacteria in the mouth, although there are other, more surprising causes. Until a few years ago, the most doctors could do was to counsel patients with bad breath about oral cleanliness. Now they are finding new ways to treat the usually curable condition. Bad breath can happen whenever the normal flow of saliva slows. Our mouths are full of bacteria feeding on protein in bits of food and shed tissue. The bacteria emit evil-smelling gases, the worst of which is hydrogen sulfide. Mouth bacteria thrive in airless conditions. Oxygen-rich saliva keeps their numbers down. When we sleep, for example, the saliva stream slows, and sulfur-producing bacteria gain the upper hand, producing classic "morning breath". Alcohol, hunger, too much talking, breathing through the mouth during exercise—anything that dries the mouth produces bad breath. So can stress, though it"s not understood why. Some people"s breath turns sour every time they go on a job interview. Saliva flow gradually slows with age, which explains why the elderly have more bad-breath trouble than younger people do. Babies, however, who make plenty of saliva and whose mouths contain relatively few bacteria have characteristically sweet breath. For most of us, the simple, dry-mouth variety of bad breath is easily cured. Eating or drinking starts saliva and sweeps away many of the bacteria. Breakfast often stops morning breath. Those with chronic dry mouth find that it helps to keep gum, hard candy, or a bottle of water or juice around. Brushing the teeth wipes out dry-mouth bad breath because it clears away many of the offending bacteria. Surprisingly, one thing that rarely works is mouthwash. The liquid can mask bad-breath odor with its own smell, but the effect lasts no more than an hour. Some mouthwashes claim to kill the bacteria responsible for bad breath. The trouble is, they don"t necessarily reach all offending germs. Most bacteria are well protected from mouthwash under thick layers of mucus. If the mouthwash contains alcohol—as most do—it can intensify the problem by drying out the mouth.