单选题He had been extremely ______ in dealing with the financial question.

单选题We were four scores left behind with five minutes to go, so the game looked completely ______.

单选题Avian influenza is an infectious disease of birds caused by type A strains of the influenza virus. The disease, which was first identified in Italy more than 100 years ago, occurs worldwide. All birds are thought to be susceptible to infection with avian influenza, though some species are more resistant to infection than others. Infection causes a wide spectrum of symptoms in birds, ranging from mild illness to a highly contagious and rapidly fatal disease resulting in severe epidemics. The latter is known as "highly pathogenic avian influenza". This form is characterized by sudden onset, severe illness, and rapid death, with a mortality that can approach 100%. Fifteen subtypes of influenza virus are known to infect birds, thus providing an extensive reservoir of influenza viruses potentially circulating in bird populations. To date, all outbreaks of the highly pathogenic form have been caused by influenza A viruses of subtypes H5 and H7. Migratory waterfowl—most notably wild ducks—are the natural reservoir of avian influenza viruses, and these birds are also the most resistant to infection. Domestic poultry, including chickens and turkeys, are particularly susceptible to epidemics of rapidly fatal influenza. Direct or indirect contact of domestic flocks with wild migratory waterfowl has been implicated as a frequent cause of epidemics. Live bird markets have also played an important role in the spread of epidemics. Recent research has shown that viruses of low pathogenicity can, after circulation for sometimes short periods in a poultry population, mutate into highly pathogenic viruses. During a 1983-1984 epidemic in the United States of America, the H5N2 virus initially caused low mortality, but within six months became highly pathogenic, with a mortality approaching 90%. Control of the outbreak required destruction of more than 17 million birds at a cost of nearly US$ 65 million. During a 1999-2001 epidemic in Italy, the H7N1 virus, initially of low pathogenicity, mutated within 9 months to a highly pathogenic form. More than 13 million birds died or were destroyed. The quarantining of infected farms and destruction of infected or potentially exposed flocks are standard control measures aimed at preventing spread to other farms and eventual establishment of the virus in a country"s poultry population. Apart from being highly contagious, avian influenza viruses are readily transmitted from farm to farm by mechanical means, such as by contaminated equipment, vehicles, feed, cages, or clothing. Highly pathogenic viruses can survive for long periods in the environment, especially when temperatures are low. Stringent sanitary measures on farms can, however, confer some degree of protection. In the absence of prompt control measures backed by good surveillance, epidemics can last for years. For example, an epidemic of H5N2 avian influenza, which began in Mexico in 1992, started with low pathogenicity, evolved to the highly fatal form, and was not controlled until 1995.

单选题(By the 1980s) more than (two-fifth of) U.S. crop production was exported, (making) U.S. agriculture heavily (dependent) upon international markets.A. By the 1980sB. two-fifth ofC. makingD. dependent

单选题How did it come______(hat you made a lot of mistakes in your homework?

单选题The stream overflowed and the flood______all of the farmland in the are

单选题His theories were so ______ that few could see what he was trying to establish. A. logical B. scholarly C. theoretical D. vague

单选题Her lecture gave us a sense of how empty the universe is, in spite of ______ number of stars within it.

单选题 If a new charter of the rights of people (in the First World, or North, or whatever you like to call the part where people to not on the whole starve) were to be drawn up, there is no doubt that the right to be a tourist, to go to a Spanish beach or to visit places endorsed as being of cultural or scenic interest, would be prominent among its clauses. The mythology of tourism is that of the idyll--of outdoor pleasures, eating, drinking and love-making with neither hangover nor remorse. But whereas the ancient poets knew that idylls were an art form, modern tourists are persuaded to believe that they can be bought for the price of a plane ticket and a hotel room. So it is not surprising that so many tourists look bewildered, dazed, even at times despondent. They are exchanging the comforts of home, where a particular way of living has been laboriously and lovingly created, for the uncertainty of existence in a foreign place, the soullessness of hotels, the wear and tear of constant travel. To be translated suddenly into an unfamiliar environment is an alienating experience, if not an unpleasant trauma. Another reason why tourists in reality do not look as happy as the smiliing figures in the brochures is that the activities open to them, far from liberating, are both limited and unbalanced. Lying on a beach and visiting museums may be fine in their different ways, but to do either continuously for days on end must constitute a kind of hell. The strongest arguments against tourism, however, are based on the damage it does to the countries which are toured against rather than those which tour. The most striking examples are in the "Third World". Cultures which have survived centuries of armed assault have not been able to resist this more insidious form of colonization: the dollar is mightier than the sword. Physical environment and culture may suffer, but the apologists for tourism argue that great economic benefits are produced. This is not the case. At least in Third World countries, most of the foreign money brought in goes straight out again, via the foreign-owned companies which exploit tourism. The jobs created by tourism are for the most part menial and low-paid. In the long term, above all, the effect of reliance on tourism must be to reduce a country to a servile, parasitical condition, selling its past and its image to richer, more dynamic people who are in control of their destiny, and in the end, that of the country they are visiting.

单选题The girl _______ when she couldn't answered the question in the presence of all her classmates.

单选题He interpreted her condemnation of recent of political developments as an______criticism of the government.

单选题 Today, we have the longest peacetime expansion in our history. After years and years of deficits, we now have budget surpluses for years ahead. More people have a chance to realize the American Dream than ever before. More children have a chance to realize their full potential than ever before. We've laid a foundation to preserve our prosperity for future generations. Now, as the budget deadline rapidly approaches this year, we face many of the same tough choices again. And once again, I think the answer is clear: To build a strong nation in the new century, we must continue to invest in our future. That means we must strengthen social security, secure and modernize medicare, and pay off the national debt in fifteen years, making America debt-free for the first time since 1835. And once again, it means we must invest in education, not sacrifice it. Months ago, I sent Congress a responsible budget to maintain our fiscal discipline and honor our commitment to our Children's education. So far the Republicans in Congress haven't put forth a budget of their own. In fact, they're so busy trying to figure Out how to pay for their irresponsible tax plan that they're in serious danger of not meeting their obligation to finish the budget by the end of the budget year. Even worse, they're preparing to pay for their own pet projects at the expense of our children's education. We know now that the Republicans' risky tax cut would force us to slash vital funding for education by as much as 50 percent over the next ten years. But what many people don't know is that next year alone, the Republican plan would cut the bill that funds education by nearly 20 percent. Now, ff carried out, this plan would lead to some of the worst cuts in education in our history. More than 5,000 teachers could be laid off. Fifty thousand students could be turned away from after-school and summer-school programs. More than 2 million of our poorest students in our poorest communities would have a smaller chance of success in school and in the workplaces of the future. These aren't just numbers on a balance sheet; they're vital investments in our children and our future. In a time when education is our top priority, Republicans in Congress are making it their lowest priority. So let me be clear: ff the Republicans send me a bill that doesn't live up to our national commitment to education, I won't hesitate to veto it. If it undermines our efforts to hire high-quality teachers to reduce class size in our public schools, I will veto it. If it fails to strengthen after-school, and summer-school programs, I'll veto it. If it underfunds college scholarship programs, I will veto it. If it sends me a bill that turns its back on our children and their future, I'll send them back to the drawing board. I won't let Congress push through a budget that's paid for at the expense of our children and our future prosperity.

单选题No one disagrees with the economic necessity of geographically extending a product. Not only does it increase turnover but also it makes economies of scale possible, thus giving companies a competitive advantage in local markets. But how far do we push the global idea? Should we globalize all aspects of a brand: its name, its creative concept and the product itself? Global branding implies the wish to extend all three aspects throughout the world. Rarely, though, is it realistic and profitable to extend all of Ihem? The Mars brand, for instance, is not absolutely global. The Mars chocolate bar is sold as an all-round nutritious snack in the UK and as an energizer in Europe. Nestle adapts the taste of its worldwide brands to local markets. The Nescafe formulas vary worldwide. Nowhere is globalization more desirable than in sectors that revolve around mobility, such as the car rental and airline industries. When a brand in these sectors is seen as being international, its authority and expertise are automatically accepted. Companies such as Hertz, Avis and Europcar globalized their advertising campaigns by portraying typical images such as the busy executive. An Italian businessman will identify more with a hurried businessman who is not Italian than with an Italian who is not a businessman. The main aim of such global marketing campaigns is not to increase sales but to maximize profitability. For example, instead of bringing out different TV advertisements for each country, a firm can use a single film for one region. The McCann-Erikson agency is proud of the fact that it has saved Coca-Cola $ 90m over the past 20 years by producing commercials with global appeal. Social and cultural developments provide a favorable platform for globalization. When young people no longer identify with long-established local values, they seek new models on which to build their identity. They are then open to influence from abroad. When drinking Coca-Cola, we all drink the American myth--fresh, young, dynamic, powerful, all American images. Nike tells young people everywhere to surpass themselves, to transcend the confines of their race and culture. Globalization is also made easier when a brand is built around a cultural stereotype. AEG, BOSCH, Siemens, Mercedes and BMW rest secure on the "Made in Germany" model, which opens up the global market since the stereotype goes beyond national boundaries. People every'- where associate the stereotype with robust performance. Barilla is another example: it is built on the classic Italian image of tomato sauce, pasta, a carefree way of life, songs and sun. IKEA furniture epitomizes Sweden. Laneome expresses the sophistication of the French woman. Certain organizational factors ease the shift to a global brand. American firms, for instance, are naturally geared towards globalization because marketing in their huge domestic market already treats America as a single entity despite its social and cultural differences. Another organizational factor concerns the way US companies first expanded in Europe. Many set up European headquarters, usually based in Brussels or London. From early on Europe was considered a single and homogeneous area. Finally, a single center of production is also a great advantage. Procter & Gamble centralizes European production of detergents in its Amiens factory. This maximizes product standardization and enables innovations to spread to all countries at once, thus giving the company a competitive advantage over local rivals and ensuring the continued growth and success of the brand.

单选题Sadly, the issue of pay was the only one of a set of ______ efficiency-raising recommendations put forward by the HRK to have received significant attention from the grassroots academic community.

单选题Monday's earthquake ______ windows and woke residents. A. slammed B. prosecuted C. rattled D. pierced

单选题To clean up the pollution it creates, according to the passage, industry will invariably______.

单选题This was a term he______and brought into popular usage.

单选题Allelomimetic behavior may be defined as behavior in which two or more individual animals do the same thing, with some degree of mutual simulation and coordination. It can only involve in species with sense organs that are well enough developed so that continuous sensory contact can be maintained. It is found primarily in vertebrate, in those species that are diurnal, and usually in those that spend much of their lives in the air, in open water or on open plains. In birds, allelomimetic behavior is the rule rather than the exception, though it may occasionally be limited to particular seasons of the year as it is in the redwing blackbird. Its principal function is that of providing safety from predators, partly because the flock can rely on many pairs of eyes to watch for enemies, and partly because if one bird reacts to danger, the whole flock is warned. Among mammals, allelomimetic behavior is very rare in rodents, which almost never move in flocks or herds. Even when they are artificially crowded together, they do not conform in their movements. On the other hand, such behavior is a major system among large hoofed mammals such as sheep. In the pack-hunting carnivores, allelomimetic behavior has another function that of cooperative hunting for large prey animals such as moose. Wolves also defend their dens as a group against larger predators, such as bears. Finally, allelomimetic behavior is highly developed among most primate groups, where it has the principal function of providing warning against predators, though combined defensive behavior is also seen in troops of baboons.

单选题{{B}}Passage Six{{/B}} The last decade has seen a tremendous expansion of scientific knowledge in human genetics. Our understanding of human genes and of the genetic basis of disease has grown dramatically. Currently, more than 4,000 diseases are known to be genetic and are passed on in families. Moreover, it is now known that alterations in our genes play a role in such common conditions as heart disease, diabetes, and many types of cancer. The identification of disease-related genes has led to an increase in the number of available genetic tests that detect disease or an individual's risk of disease. New tests arc being developed to detect colon cancer, breast cancer, and other conditions. Scientists are concerned not only that gene tests offered are reliable, but also that patients and health care professionals understand the limitations of such testing. The disclosure of test results could inflict psychological harm to a patient if safe and effective interventions are not also available. Gene testing involves examining a person's DNA-taken from cells "in a sample of blood or, occasionally, from other body fluids or tissues—for some anomaly that flags a disease or disorder. In addition to studying genes, genetic testing in a broader sense includes biochemical tests for the presence or absence of key proteins that signal aberrant genes. The most widespread type of genetic testing is newborn screening. Each year in the United States, four million newborn infants have blood samples tested for abnormal or missing gene products. Some tests look for abnormal arrangements of the chemical bases in the gene itself, while other tests detect inborn errors by verifying the absence of a protein that the cell needs to function normally. Carrier testing can be used to help couples to learn if they carry—and thus risk passing to their children. Genetic tests—biochemical and DNA-based—also are widely available for the prenatal diagnosis of conditions such as Down syndrome. Much of the current excitement in gene testing centers on predictive gene testing: tests that identify people who are at risk of getting a disease, before any symptoms appear. Tests are already available in research programs for some two dozen diseases, and as more disease genes are discovered, more gene tests can be expected. Tests for a few rare cancers are already in clinical use. Predictive gene tests for more common types of cancer are still primarily a research tool, difficult to execute and available only through research programs to small numbers of people who have a strong family history of disease. But the field of gene testing is evolving rapidly, with new genes being discovered almost daily and innovations in testing arriving almost as quickly.