单选题 Excitement, fatigue, and anxiety can all be detected from someone's blinks, according to psychologist John Stern {{U}} {{U}} 1 {{/U}} {{/U}}Washington University in St. Louis. Stern specialized in the study on these tiny twitches, using them as sensitive {{U}} {{U}} 2 {{/U}} {{/U}}of how the brain works. "I use blinks as a psychological measure to make{{U}} {{U}} 3 {{/U}} {{/U}}about thinking because I have very little {{U}} {{U}} 4 {{/U}} {{/U}}in what you tell me about what you are thinking." He says. "If I ask you the question, 'what does the phrase a rolling stone gathers no moss mean?' you can't tell me {{U}} {{U}} 5 {{/U}} {{/U}}you've started looking for the answer. But I can, by watching your eyes." Blinks also tell Stern when you have understood his question--often long before he's finished asking it--and when you've found an answer or part of {{U}} {{U}} 6 {{/U}} {{/U}}. "We blink at times {{U}} {{U}} 7 {{/U}} {{/U}}are psychologically important." He says. "You have listened to a question, you understand it, {{U}} {{U}} 8 {{/U}} {{/U}}you can take time out for a blink. Blinks are {{U}} {{U}} 9 {{/U}} {{/U}}marks. Their timing is tied to what is going on in your {{U}} {{U}} 10 {{/U}} {{/U}}." Stern has found that {{U}} {{U}} 11 {{/U}} {{/U}}suppress blinks when they are absorbing or anticipating {{U}} {{U}} 12 {{/U}} {{/U}}but not when they're reciting it. People blink later, for example, {{U}} {{U}} 13 {{/U}} {{/U}}they have to memorize six numbers instead of two. "You don't blink," he says, "until you have {{U}} {{U}} 14 {{/U}} {{/U}}the information to some short-term memory store." And if subjects are cued {{U}} {{U}} 15 {{/U}} {{/U}}the set of numbers is coming, say, five seconds, they'll curb their blinks until the task is {{U}} {{U}} 16 {{/U}} {{/U}}. Similarly, the more important the information that people are taking in, the more likely they are to put their blinks on hold for {{U}} {{U}} 17 {{/U}} {{/U}}Pilots blink less when they're {{U}} {{U}} 18 {{/U}} {{/U}}for flying a plane than when they {{U}} {{U}} 19 {{/U}} {{/U}}their eyes from the road to the rearview mirror. But if they see the flashing lights of a state trooper behind them, their {{U}} {{U}} 20 {{/U}} {{/U}}will move fast to the speed-meter and back to the mirror.

单选题[A] What to do as a student [B] Various definitions of plagiarism [C] Ideas should always be sourced [D] Ignorance can be forgiven [E] Plagiarism is equivalent to theft [F] The consequences of plagiarism [G] Acknowledgement should substitute plagiarism Scholars, writers and teachers in the modern academic community have strong feelings about acknowledging the use of another person's ideas. In the English-speaking world, the term plagiarism (抄袭) is used to label the practice of not giving credit for the source of one's ideas. Simply stated, plagiarism is "the wrongful appropriation(盗用) or purloining(偷窃), and publication as one's own of the ideas, or the expression of ideas of another. /

单选题Today our knowledge of food and what it does for our bodies are far more advanced than that of the old times. Now we know about vitamins and how each kind of vitamin helps in the growth of a particular part of our body. There are on the market all kinds of vitamins which one can take to make up for one"s lack of certain important things, which are needed for good health. Of course, if we eat well and properly, the food that we eat will take care of our body and so there is no need to take any kinds of vitamins unless our doctor tells us that our bodies are short of something, which can be supplied by them. Generally speaking, everything we eat does some good to our body. But if we eat too much of one kind of food and pay too little attention to others, we may have too much of one kind and not enough of others. Then we may be in trouble. We are often told that we must eat some meat at each meal in order to get the necessary proteins. That is only partly true, for proteins are not found only in meat. We can also get them from some vegetables. The best advice about what to eat is that we should eat all kinds of food but never too much of any.

单选题{{B}}Passage One{{/B}} The word most often used by outsiders to describe the Watts and other riots is "senseless". Why would people destroy their own community? Popular explanations of riots focus on the character of the rioters. According to the "riffraff(群氓，社会渣滓) theory", the hint of mob action attracts delinquents (少年犯罪者), uneducated and unemployed drifters (流浪者) and criminal types who delight in violence for its own sake. Most residents do not approve of the rioters' behavior or participate themselves. According to the "rabble-rouser (煽动者) theory", most riots are started by political militants who deliberately plant false rumors, create panic, and stir the crowd to violence. In the case of the Watts riot, investigation by the President's National Advisory Commission on Civil Disorders proved these popular theories false. A majority of Watts residents approved of the riot. Sixty-two percent saw riots as a form of protest, not criminal behavior; 64 percent thought the merchants whose stores were looted (抢劫) or burned deserved what they got; 83 percent said whites were now more aware of black Americans' problems; 58 percent believed the long-term consequences would be favorable. About 20 percent of Watts residents were active participants in the riot; another 30 percent watched sympathetically from the sidelines. Of the 3 927 people arrested, 2 111 were over twenty-five years old, 1 113 had no previous arrest record, and 965 others had been arrested before But were never convicted. The typical rioter had been born and raised in the area, had more education than the average non-rioter, was more involved in community affairs, was employed at least part-time, and was no poorer than the average non-rioter. Three-fourths of the rioters (like three-fourths of non-rioters) had grown up in a stable, intact family. What seemed to distinguish rioters from non-participants was a strong sense of black pride and the feeling that they deserved better jobs and were being held back by racism. Finally, there was no evidence at all of a conspiracy (阴谋，密谋). Watts rioters weren't trying to overthrow the capitalist system--far from it. As widespread looting demonstrated, they wanted a greater share of the nation's riches.

单选题Because agriculture is so important to a nation's well-being, governments have always been concerned with it. For example, the United States and Canada have long produced surpluses that complicate their economies. Surpluses tend to lower prices to farmers and seriously endanger the agriculture industry. Governments have instituted systems of price supports to maintain a fair price when surpluses cause prices to drop. The system in the United States is a good example. A government program supports the prices paid to farmers for grains, and other agricultural products. Support prices are based on parity, which is the ratio between the prices farmers receive for their crops and the prices they must pay for things they need. The government selected the period from 1910 to 1914 as a time when farm prices were in a fair ratio with farming costs. This is the base period now used to determine parity prices. The idea is to assure farmers that what they get for a bushel of wheat will buy the same amount of, say, seed as it did in the years of the base period; if prices drop too far below this ideal the government can help in a number of ways. For example, it may buy much of a surplus at parity prices. Governments have instituted a wide variety of other controls for prices and, also, for farm output, mainly at the request of the farmers themselves. Farm prices tend to fluctuate more than other prices do, and the incomes of farmers fluctuate along with farm prices. Various measures for maintaining farm prices and incomes include tariff or import levies, import quotas, export subsidies, direct payment to farmers, and limitations on production. All of these measures are useful and are used to some extent by most developed countries. An important example of such a program is the soil-bank plan, which aimed at limiting production while improving farmland. The European Economic Community (EEC) established a common agricultural policy (CAP) for its member nations, called the Common Market countries. The aim is to create free trade for individual commodities within the community. When production of a commodity exceeds EEC consumption, the EEC may buy the excess for storage, pay to have it reprocessed, or export it to countries outside the Common Market. In this way the EEC can maintain its members' farm prices at levels equal to or even higher than those in such market-competitive nations as the United States and Canada.

单选题People are more likely to accept the decision if they are ______ in making it.

单选题Successful innovations have driven many older technologies to extinction and have resulted in higher productivity, greater consumption of energy, increased demand for raw materials, accelerated flow of materials through the economy and increased quantities of metals and other substances in use per person. The history of industrial development is full of examples. In 1870, horses and mules were the prime source of power on U. S. farms. One horse or mule was required to support four human beings—a ratio that remained almost constant for many decades. At that time, had a national commission been asked to forecast the horse and mule population for 1970, its answer probably would have depended on whether its consultants were of an economic turn of mind. Had they been "economists", they would have recognized that the power of steam had already been harnessed to industry and to land and ocean transport. They would have recognized further that would be only a matter of time before steam would be the prime source of power on the farm. It would have been difficult for them to avoid the conclusion that the horse and mule population would decline rapidly.

单选题 After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the previous day. The rest that you get while sleeping enables your body to prepare itself for the next day. There are four levels of sleep, each being a little deeper than the one before. As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other. Although your mind slows down, from time to time you will dream. Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly. This stage of sleep is called REM, which stands for rapid eye movement. If you have trouble falling asleep, some people recommend breathing very slowly and very deeply. Other people believe that drinking warm milk will help make you drowsy. There is also an old suggestion that counting sheep will put you to sleep!

单选题Hotel Receptionist: Front desk. Can I help you? Guest: This is Mr. Burton in 1205. ______?

单选题Connie: Are you doing pottery? It looks like fun! Frank: ______ ? Connie: Boy, would I? Thanks.

单选题That couple has endured so many emotional and financial ______. It is amazing that their marriage has lasted. A. issues B. crises C. subjects D. questions

单选题Receiver: Would you like to leave a message? I'll tell Mr. Cohen know as soon as he comes back. Caller: ______.

单选题A: Excuse me, I don't want to interrupt you... B.______.

单选题We want to preserve the character of the town while improving the facilities.

单选题 Passage 4 There is nothing illogical or synthetic about the humility of great bookmen in calling attention to the limitations of the book. No book can {{U}}(1) {{/U}} us to know everything that is to be known, or feel everything that is to be felt. A book is part of life, not a substitute {{U}}(2) {{/U}} it. It is not a fit {{U}}(3) {{/U}} for worship or enshrinement. It loses its charm and much of its value when accepted uncritically. No one would have been more {{U}}(4) {{/U}} than Aristotle if he could have known of the excessive and {{U}}(5) {{/U}} veneration that would be given to his ideas in centuries to {{U}}(6) {{/U}} When his works became the last words of advance knowledge, such knowledge became neither advanced nor vital. The particular occasion for these remarks is that there are {{U}}(7) {{/U}} here and there that some of us in the book world may be {{U}}(8) {{/U}} ourselves too seriously. In the effort to increase book reading some extravagant things are being said about books. It is made to{{U}} (9) {{/U}} that nothing is happening now that has not happened before, and that the only true approach to understanding is {{U}}(10) {{/U}} books. We do neither service nor justice to books by {{U}}(11) {{/U}} upon them such omnipotence and omniscience. Many of the answers we need today are not necessarily to be found between {{U}}(12) {{/U}} . There are elements of newness in the present {{U}}(13) {{/U}} of man that will not readily be {{U}}(14) {{/U}} of by required reading or ready reference. Books are not slide rules or blueprints for {{U}}(15) {{/U}} automatic answers. What is needed is a mighty blend of the wisdom of the ages with fresh, razor-edged analytical thought.

单选题Passenger: How much would it cost me to send this parcel to Paris? Operator: That'll be thirty dollars. Passenger: Thirty dollars? ______

单选题The less the surface of the ground yields to the weight of a fully-loaded truck, ______to the truck. A. the stress is greater B. the greater the stress C. the greater stress is D. greater is the stress

单选题I wish that Henry ______ interested in reading good books. A. will be B. is C. would D. were

单选题However much he______his expenses, he cannot make both ends meet.