单选题______ to the doctor right away, he might have been alive today.

单选题What does the phrase "white stuff" in the first paragraph refer to?

单选题This country, as Lincoln said, belongs to the people. So do the natural resources which make it rich. They supply the basis of our prosperity now and hereafter. In preserving them, which is a national duty, we must not forget that monopoly is based on the control of natural resources and natural advantages, and that it will help the people little to conserve our natural Wealth unless the benefits which it can yield are given back to the people. Let us remember, also, that conservation does not stop with the natural resources. The principle of making the best use of all we have requires that we stop the waste of human life in industry and prevent the waste 'of human welfare which flows from the unfair use of concentrated power and wealth in the hands of men whose eagerness for profit blinds them to the cost of what they do. We have no higher duty than to promote the efficiency of the individual. There is no surer road to the efficiency of the nation.

单选题Everyone should be ______ to a decent standard of living and an opportunity to be educated. A. attributed B. entitled C. identified D. justified

单选题A scientist who wants to predict the way in which consumers (消费者) will spend their money must study consumer behavior. He must obtain data both on the resources of consumers and on the motives that tend to encourage or discourage money spending. If an economist were asked which of three groups borrow most--people with rising incomes, stable incomes, or decreasing incomes--he would probably answer, those with decreasing incomes. Actually in the years 1947--1950, the answer was: people with rising incomes. People with decreasing incomes were next and people with stable incomes borrowed the least. This shows us that traditional assumptions (假设) about earning and spending are not always reliable. Another traditional assumption is that if people who have money expect prices to go up they will hasten to buy. If they expect prices to go down, they will postpone buying. But research surveys have shown that this is not always true. The expectations of price increases may not stimulate buying. One typical attitude was expressed by the wife of a mechanic in an interview at a time of rising prices. "In a few months," she said, "we'll have pay more for meat and milk；we'll have less to spend on other things. " Her family had been planning to buy a new car but they postponed this purchase. Furthermore, the rise in prices that has already taken place may be disliked and buyer's resistance may be produced. This is shown by the following typical comment. "I just don't pay these prices； they are too high. " The investigations mentioned above were carried out in America. The condition most helpful to spending appears to be price stability. If prices have been stable and people consider that they are reasonable, they are likely to buy. Thus, it appears that the common business policy of maintaining stable prices is based on a correct understanding of consumer psychology.

单选题Help Wanted Ad Outstanding opportunity with local real estate corporation. Requires strong background in real estate, financing. Some legal training helpful. Prefer candidate with M.A. and two or more years of successful real estate experience. Broker's license required, Salary range＄50,000--＄80, 000 yearly in accordance with education and experience. Begin immediately. Interviews will be conducted Tuesday and Thursday, June 10 and 12. Call for an appointment 243-11522, or send a letter of application and resume to: Personnel Department Executive Real Estate Corporation 500 Capital Avenue Lawrence, Kansas 67884

单选题 The growth of population during the past few centuries is no proof that population will continue to grow straight upward toward infinity and doom. On the contrary, demographic history offers evidence that population growth has not been at all constant. According to paleo-ecologist Edward Deevey, the past million years show three momentous changes. The first, a rapid increase in population around one million B. C., followed the innovations of tool-making and tool-using. But when the new power from the use of tools had been exploited, the rate of world population growth fell and became almost stable. The next rapid jump in population started perhaps 10,000 years ago, when men began to keep herds, plow and plant the earth. Once again when initial productivity gains had been absorbed, the rate of population growth abated. These two episodes suggest that the third great change, the present rapid growth, which began in the West between 250 and 350 years ago, may also slow down when, or if technology begins to yield fewer innovations. Of course, the current knowledge revolution may continue without foreseeable end. Either way contrary to popular belief in constant geometric growth--population can be expected in the long mn to adjust to productivity.

单选题When I was walking down the street the other day, I happened to notice a small brown leather wallet lying on the sidewalk. I picked it up and opened it to see if I could find out the owner's name. There was nothing inside it except some change and an old photograph--a picture of a woman and a young girl about twelve years old, who looked like the woman's daughter. I put the photograph back and took the wallet to the police station, where I handed it to the desk sergeant. Before I left, the sergeant took down my name and address in case the owner might want to write and thank me. That evening I went to have dinner with my aunt and uncle. They had also invited a young woman so that there would be four people at the table. Her face was familiar. I was quite sure that we had not met before, but I couldn't remember where I had seen her. In the course of conversation, however, the young woman happened to mention that she had lost her wallet that afternoon. All at once I realized where I had seen her. She was the young girl in the photograph, although she was now much older. She was very surprised, of course, when I was able to describe her wallet to her. Then I explained that I had recognized her from the photograph I had found in the wallet. My uncle insisted on going to the police station immediately to claim the wallet. As the police sergeant handed it over, he said that it was amazing that I had not only found the wallet, but also the person who had lost it.

单选题In 2010, a federal judge shook America's biotech industry to its core. Companies had won patents for isolated DNA for decades--by 2005 some 20% of human genes were patented. But in March 2010 a judge ruled that genes were unpatentable. Executives were violently agitated. The Biotechnology Industry Organisation (BIO), a trade group, assured members that this was just a "preliminary step" in a longer battle. On July 29th they wererelieved, at least temporarily. A federal appeals court overturned the prior decision, ruling that Myriad Genetics could indeed hold patents to two genes that help forecast a woman' s risk of breast cancer. The chief executive of Myriad, a company in Utah, said the ruling was a blessing to firms and patients alike. But as companies continue their attempts at personalised medicine, the courts will remain rather busy. The Myriad ease itself is probably not over. Critics make three main arguments against gene patents: a gene is a product of nature, so it may not be patented; gene patents suppress innovation rather than reward it; and patents' monopolies restrict access to genetic tests such as Myriad' s. A growing number seem to agree. Last year a federal task-force urged reform for patents related to genetic tests. In October the Department of Justice filed a brief in the Myriad case, arguing that an isolated DNA molecule "is no less a product of nature." than are cotton fibres that have been separated from cotton seeds. " Despite the appeals court' s decision, big questions remain unanswered. For example, it is unclear whether the sequencing of a whole genomeviolates the patents of individual genes within it. The case may yet reach the Supreme Court. As the industry advances, however, other suits may have an even greater impact. Companies are unlikely to file many more patents for human DNA molecules--most are already patented or in the public domain. Firms are now studying how genes interact, looking for correlations that might be used to determine the causes of disease or predict a drug' s efficacy" Companies are eager to win patents for "connecting the dots," explains Hans Sauer, a lawyer for the BIO. Their success may be determined by a suit related to this issue, brought by the Mayo Clinic, which the Supreme Court will hear in its next term. The BIO recently held a convention which included sessions to coach lawyers on the shifting landscape for patents. Each meeting was packed.

单选题Imagine a product that can be used as medicine, a cleaning agent and a beauty treatment. You can eat it, drink its juice, and 1 essential oil from it. It is available all over the world, and is inexpensive. You may even have one in your kitchen 2 . What is it? The lemon! It is thought that lemons 3 in Southeast Asia. From 4 they were gradually carried westward toward the Mediterranean. Lemon trees thrive in mild 5 which is why they grow so well in places like Italy, Mexico, Spain, and even parts of Africa and Asia. A mature tree, depending on the variety and location, can produce 6 from 200 to 1,500 lemons a year. The cultivated (培育的) varieties 7 in different periods, making it possible to harvest lemons all year round. You don"t need lots of space to grow a lemon tree. Even a sunny balcony (阳台) is enough, 8 small lemon trees can be grown in pots and can make your house beautiful. They like sunny, wind-free spots where they can soak up the warmth, 9 against a wall. However, if the temperature drops a lot during the winter, they need to be 10 or brought indoors.

单选题According to what you have just said, am I to understand that his new post______no responsibility with it at all?

单选题The primary purpose of obedience training is to______.

单选题(Economist) Adam Smith (published) his book The Wealth of Nations in 1776, (a year) also (notably) for the Declaration of Independence.A. EconomistB. publishedC. a yearD. notably

单选题{{B}}21-25{{/B}} Even plants can run a fever, especially when they're under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3,000 feet away—straight up. A decade ago, adapting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide (杀虫剂) spraying rather than rain poison on a whole field, which invariably includes plants that don't have pest (害虫) problems. Even better, Paley's Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running "fevers". Farmers could then spot-spray, using 40 to 70 percent less pesticide than they otherwise would. The bad news is that Paley's company closed down in 1984, after only three years. Farmers resisted the new technology and long-term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. "This technique can be used on 75 percent of agricultural land in the United States, "says George Oerther of Texas A&M. Ray Jackson, who recently retired from the Department of Agriculture, thinks? remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago.

单选题{{B}}Text 3{{/B}} Asia's real boat-rocker is a growing China, not Japan, a senior American economist observed. There is so much noise surrounding and emanating from the world's miracle economy that it is becoming cacophonous. In Washington, DC, the latest idea is that China is becoming too successful, perhaps even dangerously so: while Capitol Hill resounds with complaints of trade surpluses and currency manipulation, the Pentagon and sundry think-tanks echo to a new drumbeat of analysts worrying about China's 12.6% annual rise in military spending and about whether it might soon have the ability to take pre-emptive military action to force Taiwan to rejoin it. So it may be no coincidence that for three consecutive weekends the streets of big Chinese cities have been filled with the sounds of demonstrators marching and rocks being thrown, all seeking to send a different message: that Japan is the problem in Asia, not China, because of its wanton failure to face up to its history; and that by cosying up to Japan in security matters, America is allying with Asia's pariah. Deafness is not the only risk from all this noise. The pressure towards protectionism in Washington is strong, and could put in further danger not only trade with China but also the wider climate for trade liberalisation in the Doha round of the World Trade Organisation (WTO). So far words have been the main weapons used between China and Japan, but there is a chance that nationalism in either or both countries could lead the governments to strike confrontational poses over their territorial disputes in the seas that divide them, even involving their navies. And the more that nationalist positions become entrenched in both countries but especially China, the more that street protests could become stirred up, perhaps towards more violence. All these issues are complex ones and, as is often the case in trade and in historical disputes, finding solutions is likely to be far from simple. A revaluation of the yuan, as demanded in Congress, would not re-balance trade between America and China, though it might help a little, in due course. A "sincere" apology by Japan for its wartime atrocities might also help a little, but it would not suddenly turn Asia's natural great-power rivals into bosom buddies. For behind all the noise lies one big fact: that it is the rise of China, not the status or conduct of Japan, that poses Asia's thorniest questions.

单选题They came to their rescue and convinced these trembling men ______ safety and help. A. of B. with C. for D. as

单选题Text 3 If sustainable competitive advantage depends on work-force skills, American firms have a problem. Human-resource management is not traditionally seen as central to the competitive survival of the firm in the United States. Skill acquisition is considered an individual responsibility. Labor is simply another factor of production to be hired-rented at the lowest possible cost-much as one buys raw materials or equipment. The lack of importance attached to human-resource management can be seen in the corporate hierarchy. In an American firm the chief financial officer is almost always second in command. The post of head of human-resource management is usually a specialized job, off at the edge of the corporate hierarchy. The executive who holds it is never consulted on major strategic decisions and has no chance to move up to Chief Executive Officer(CEO). By way of contrast, in Japan the head of human-resource management is central-usually the second most important executive, after the CEO, in the firm's hierarchy. While American firms often talk about the vast amounts spent on training their work forces, in fact they invest less in the skills of their employees than do either Japanese or German firms. The money they do invest is also more highly concentrated on professional and managerial employees. And the limited investments that are made in training workers are also much more narrowly focused on the specific skills necessary to do the next job rather than on the basic background skills that make it possible to absorb new technologies. As a result, problems emerge when new breakthrough technologies arrive. If American workers, for example, take much longer to learn how to operate new flexible manufacturing stations than workers in Germany (as they do), the effective cost of those stations is lower in Germany than it is in the United States. More time is required before equipment is up and running at capacity, and the need for extensive retraining generates costs and creates bottlenecks that limit the speed with which new equipment can be employed. The result is a slower pace of technological change. And in the end the skills of the population affect the wages of the top haft. If the bottom half can't effectively staff the processes that have to be operated, the management and professional jobs that go with these processes will disappear.

单选题 Passage 10 Although credit cards are becoming a more acceptable part of the financial scene, they are still regarded with suspicion by many people as a major part of the "live now, pay later" habit. They provide encouragement to spend {{U}}(1) {{/U}} money. Of course it is only the fool who follows the temptation to live, temporarily at least, {{U}}(2) {{/U}} his means, and such people would no doubt manage to do so even without credit cards. Advertisers have, however, promoted a growing realization of the {{U}}(3) {{/U}} of these small pieces of plastic. They do away with the need to carry large {{U}}(4) {{/U}} of cash and are always useful in emergencies. All the credit card organizations {{U}}(5) {{/U}} interest on a monthly basis which may work out as high as 25 percent a year, yet careful use of a card can mean that you obtain up to seven weeks interest-free credit. Using the card abroad, {{U}}(6) {{/U}} items frequently take a long time to be included on your account, can {{U}}(7) {{/U}} this period even further. It is worthwhile shopping around before {{U}}(8) {{/U}} on a particular credit card. It is necessary to consider the amount of credit granted: interest rates, which may vary slightly, the number and range of outlets, though most cards {{U}}(9) {{/U}} major garages, hotels, restaurants and department stores. And of course, what happens if your card is lost or stolen. A credit thief may become suddenly {{U}}(10) {{/U}} particularly if there is a delay in reporting the loss of the card. However，if used wisely，a credit card can cost nothing，or at least help to tide you over a period of financial difficulty．

单选题Without air or water, there ______ no life on earth. A. is B. will be C. has been D. would be

单选题Learning disabilities are very common. They affect perhaps 10 percent of all children. Four times as many boys as girls have learning disabilities. Since about 1970, new research has helped brain scientists understand these problems better. Scientists now know there are many different kinds of learning disabilities and that they are caused by many different things. There is no longer any question that all learning disabilities result from differences in the way the brain is organized. You cannot look at a child and tell if he or she has a learning disability. There is no outward sign of the disorder. So some researchers began looking at the brain itself to learn what might be wrong. In one study, researchers examined the brain of a learning-disabled person who had died in an accident. They found two unusual things. One involved cells in the left side of the brain, which control language. These cells normally are white. In the learning-disabled person, however, these cells were gray. The researchers also found that many of the nerve cells were not in a line the way they should have been. The nerve cells were mixed together. The study was carried out under the guidance of Norman Geschwind, an early expert on learning disabilities. Doctor Geschwind proposed that learning disabilities resulted mainly from problems in the left side of the brain. He believed this side of the brain failed to develop normally. Probably, he said, nerve cells there did not connect as they should. So the brain was like an electrical device in which the wires were crossed. Other researches did not examine brain tissue. Instead, they measured the brain's electrical activity and made a man of the electrical signals. Frank Duffy experimented with this techniques at Children's Hospital Medical Center in Boston. Doctor Duffy said his research is evidence that reading disabilities involve damage to wide area of the brain, not just the left side.