单选题According to the passage it can be inferred that ______.

单选题{{B}}Text 3{{/B}} When the United States and Korea(SOK) announced their new free-trade agreement last month, the news was mainly economic. The deal would give American farmers and bankers alike better access to Korean consumers and help Korean companies push more electronics, cars and textiles into the United States. Largely unreported was the political angle--the U.S.-Korea(SOK) free trade agreement comes at precisely the moment when America's military presence on the Korean Peninsula is rapidly diminishing, anti-U.S. nationalism in Korea(SOK) is growing and China is playing an ever more important leadership role in the region. This FTA is much more significant in strategic than economic terms. It is the same about any number of trade deals in Asia these days. While free-trade agreements have always been somewhat political, solidifying national relationships, the use of FTAs in geopolitical jockeying(竞赛) is reaching new heights in East Asia. Since 1997, the number of FTAs in the region has risen from seven to 38. Last time we saw this sort of frenzied bilateral activity was back in the 1930s. That worries some economists, who fear that all the free-trade politicking will further erode an already beleaguered global trading system, and create a snowball effect of countermeasures. It's no accident that the activity in the region has increased since 2004, which marked the beginning of a massive free trade agreement between China and the Association of Southeast Asian Nations. China offered countries like Laos and Cambodia an "early harvest," unilaterally opening up markets for hundreds of different kinds of agricultural products. That in turn helped smooth the way for a reduction in tension in hot spots like the disputed South China Sea territories. FTAs are becoming a key instrument for great-power diplomacy. That worries rivals, who are rushing to find their own partners. The Japanese, for example, have always been cautious when it comes to bilateral agreements. Japanese Prime Minister Shinzo Abe recently announced a new push for more Japanese FTAs in the region. Meanwhile, the EU is trying desperately to push its way back into the region, recently announcing plans to negotiate its own deals with both South Korea and the ASEAN nations. How will all the wheeling and dealing end? Not with more efficient trading. A recent map of Asian trade deals shows an increasingly complicated "spaghetti bowl" hindering broader global efforts to liberalize trade. Such deals have a disproportionately negative effect on small and medium-sized enterprises, representing as much as 80 percent of jobs in some parts of Asia. Already, the U.S.-Korea(SOK) deal is causing grousing(不满) in Japan, which would take a hit as Korean competitors no longer have. to deal with U.S. tariffs. Still, that probably won't turn the tide -- the most important criterion in motivating a country to seek FTAs, well ahead of economic reform, was--surprise --politics.

单选题The historian Frederick J. Turner wrote in the 1890’s that the agrarian discontent that had been developing steadily in the United States since about 1870 had been speeded by the closing of the internal frontier -- that is, the depletion of available new land needed for further expansion of the American farming system. Not only was Turner’s thesis influential at the time, it was later adopted and elaborated by other scholars, such as John D. Hicks in The populist Revolt (1931). Actually, however, new lands were taken up for farming in the United States throughout and beyond the nineteenth century. In the 1890’s, when agrarian discontent had become most acute, 1,100,000 new farms were settled, which was 500,000 more than had been settled during the previous decade. After 1890, under the terms of the Homestead Act and its successors, more new land was taken up for fanning than had been taken up for this purpose in the United states up until that time. It is true that a high proportion of the newly fanned land was suitable only for grazing and dry farming, but agricultural practices had become sufficiently advanced to make it possible to increase the profitability of farming by utilizing even these relatively barren lands. The emphasis given by both scholars and statesmen to the presumed disappearance 'of the American frontier helped to obscure the great importance of changes in the conditions and consequences of international trade that occurred during the second half of the nineteenth century. In 1869 the Suez Canal was opened and the first transcontinental railroad in the United States was completed. An extensive network of telegraph and telephone communications was spun: Europe was connected by submarine cable with the United States in 1866 and with South America in 1874. By about 1870 improvements in agricultural technology made possible the full exploitation of areas that were most suitable for extensive farming on a mechanized basis. Huge tracts of land were being settled and farmed in Argentina, Australia, Canada, and in the American West, and these areas were joined with one another and with the countries of Europe into an interdependent market system. As a consequence, agrarian depressions no longer were local or national in scope, and they struck several nations whose internal frontiers had not vanished or were not about to vanish. Between the early 1870's and the 1890's the mounting agrarian discontent in America paralleled the almost uninterrupted decline in the prices of American agricultural products on foreign markets. Those staple-growing farmers in the United States who exhibited the greatest discontent were who had become most dependent on foreign markets for the sale of their products. In so far as Americans had been deterred from taking up new land for farming, it was because market conditions had made this period a perilous time in which to do so.

单选题In 1957 a doctor in Singapore noticed that hospitals were treating an unusual number of influenza-like cases. Influenza is sometimes called “flu” or a “bad cold”. He took samples from the throats of patients in his hospital and was able to find the virus of this influenza. There are three main types of the influenza virus. The most important of these are types A and B, each of them having several sub-groups. With the instruments at the hospital the doctor recognized that the outbreak was due to a virus group A, but he did not know the sub-group. He reported the outbreak to the World Health Organization in Geneva. W. H.O. published the important news alongside reports of a similar outbreak in Hong Kong, where about 15%—20% of the population had become ill. As soon as the London doctors received the package of throat samples, they began the standard tests. They found that by reproducing itself at very high speed, the virus had multiplied more than a million times within two days. Continuing their careful tests, the doctors checked the effect of drugs used against all the known sub-groups of virus type A. None of them gave any protection. This then, was something new: a new influenza virus against which the people of the world had no ready help whatsoever. Having isolated the virus they were working with, the two doctors now dropped it into the noses of some specially selected animals, which contact influenza in the same way as human beings do. In a short time the usual signs of the disease appeared. These experiments revealed that the new virus spread easily, but that it was not a killer. Scientists, like the general public, called it simply “Asian” flu. The first discovery of the virus, however, was made in China before the disease had appeared in other countries. Various reports showed that the influenza outbreak started in China, probably in February of 1957. By the middle of March it had spread all over China. The virus was found by Chinese doctors early in March. But China was not a member of the World Health Organization and therefore did not report outbreaks of disease to it. Not until two months later, when travelers carried the virus into Hong Kong, from where it spread to Singapore, did the news of the outbreak reach the rest of the world. By this time it was started on its way around the world. Thereafter, WHO’s Weekly Reports described the steady spread of this virus outbreak, which within four months swept through every continent.

单选题Humans are unique in the extent to which they can reflect on themselves and others. Humans are able to (1) , to think in abstract terms, to reflect on the future. A meaningless, (2) world is an insecure world. We do not like extensive insecurity. When it (3) to human behavior we infer meaning and (4) to make the behavior understandable. What all this means is that people develop "quasi theories" of human behavior, that is, theories that are not developed in an objective, scientific (5) . When doing so, people believe they know (6) humans do the things they do. Let's consider an example. In the United States people have been (7) with the increasing amount of crime for several years. The extent of crime bothers us; we ourselves could be (8) But what also bothers us is that people behave in such ways. Why can such things happen? We develop quasi theories. We (9) concerned about the high crime rate, but we now believe we (10) it: our criminal justice system is (11) ; people have grown selfish and inconsiderate as our moral values (12) from the influence of liberal ideas; too many people are (13) drugs. These explanations suggest possible solutions. (14) the courts; put more people in jail as (15) to other lawbreakers. There is hope that the problem of crime can be solved if only we (16) these solutions. Again, the world is no longer meaningless nor (17) so threatening. These quasi theories (18) serve a very important function for us. But how accurate are they? How (19) will the suggested solutions be? These questions must be answered (20) how people normally go about developing or attaining their quasi theories of human behavior.

单选题As a father to three young girls, I have been particularly struck over the past several months by the flurry of public activity related to childhood obesity . While the efforts are well-intentioned, it"s worrisome to watch the movement gain momentum when we still don"t really know whether what we"re doing is actually working — nor do we really know if there will be any downsides to the anti-obesity initiative. The most recent major move in the fight against childhood obesity came on Jan. 25 when First Lady Michelle Obama announced that school meal options were going to get a lot healthier. It is, undoubtedly, a good idea to make school lunches more nutritious, although some research suggests that by the time a child gets to school, his or her tastes for high calorie or otherwise unhealthy food is already in place and that changing lunch doesn"t make them eat healthier at home. In other words, school-based initiatives may be too little too late for those children who may be predisposed, whether through genetics or environment or both, towards obesity . According to the Centers for Disease Control, 17% of all children and adolescents in the U.S. are obese. Yet the majority of obesity programming, especially in our schools, is applied to the child and adolescent populations as a whole. Sure, promoting healthy eating, regardless of one"s weight or age, seems like a positive thing on the surface. But here"s the potential downside : We know kids and teens react differently than adults to external pressures like persistent messaging. Sometimes these pressures can translate into incredible waves of anxiety and fear. At the extreme, a healthy-weight youth could be pushed to monitor his weight more frequently or even begin an unsupervised diet — behaviors that might represent an impending eating disorder. So the real question is what are children saying and how are they behaving in light of our anti-obesity effort? A nationally representative survey, conducted last September by the C. S. Mott Children"s Hospital National Poll on Children"s Health, attempted to answer this question. The results, released in January, showed that 30% of parents of children age 6-14 report worrisome eating behaviors and physical activity in their children; 17% of parents report that their children are worried about their weight; 7% say their children have been made to feel bad at school about what or how much they were eating; and 3% of parents report their children had a sudden interest in vegetarianism. Certainly these data do not directly link the anti-obesity effort and eating disorders. They also do not offer any insight into whether obese children are actually losing weight. They do, however, serve as a reminder of how vulnerable these "worried" children already are to disordered eating and that everything we do, no matter how well-placed our intent carries risk . With that said, we shouldn"t stop promoting healthy eating habits in our children. And we shouldn"t necessarily downplay our anti-obesity efforts for fear of increasing the rate of childhood eating disorders. Instead, we should just be mindful — with their wonderful and special abilities as well as their unpredictabilities, children surely deserve an approach and awareness that is as well-thought out and balanced as the meals we"d like them to eat.

单选题Which of the following is excluded among the suggested requirements for the make-up of an ideal council?______

单选题Ms. Rowling's reading in London's Royal Albert Hall is mentioned to show______.

单选题A) due to B ) apt for C) all but D) prior to

单选题It is widely known that birds learn to fly through practice, gradually (1) their innate ability into a finely tuned skill. (2) , a recent study conducted by the University of Sheffield's Department of Psychology has discovered that the reason birds learn to fly so easily is because memories may have been left behind by their ancestors. These skills may be easy to enhance because of a (3) specified latent (4) for flying. The researchers used simple models of brains called (5) neural networks and computer (6) to test his theory. They discovered that learning in (7) generations (8) induces the formation of a latent memory in the current generation and (9) decreases the amount of learning required. These effects are especially pronounced if there is a large biological "fitness cost" to learning, where biological fitness is measured in terms of the number of (10) each individual has. The beneficial effects of learning also (11) the unusual form of information storage in neural networks. (12) computers, which store each item of information in a specific location in the computer's memory chip, neural networks store each item (13) over many neuronal connections. (14) information is stored in this way then (15) is accelerated, explaining how complex motor skills, such as nest building and hunting skills, are (16) by a combination of innate ability and learning over many generations. The researchers concluded that this new theory has its (17) in ideas (18) by James Baldwin in 1896, who firstly made the counter-intuitive argument that learning within each generation could guide evolution of innate behavior over future generations. Baldwin was right, (19) in ways less sophisticated than he could have imagined because concepts (20) artificial neural networks and distributed representations were not known in his time.

单选题According to the text, in relation to someone teaching his own language to foreigners, audio-visual aids can