单选题Zhejiang Geely secured Volvo at a price far less than the $6. 45 billion Ford paid the brand in 1999.

单选题A: It’s not like George to be late for an appointment. B: _____ He’s always punctual.

单选题This week marks the 10th anniversary of the Alar apple scare, in which many American consumers were driven into a panic following the release of a report by an environmental organization claiming that apples containing the chemical Alar posed a serious health threat to preschoolers. The report was disseminated through a PR (Problem Report) campaign and bypassed any legitimate form of scientific peer review. Introduced to the American public by CBS" "60 Minutes," the unsubstantiated claims in the report led some school districts to remove apples from their school lunch programs and unduly frightened conscientious parents trying to develop good eating habits for their children. Last month, Consumers Union released a report warning consumers of the perils of consuming many fruits and vegetables that frequently contained "unsafe" levels of pesticide residues. This was especially true for children, they claimed. Like its predecessor 10 years earlier, the Consumers Union report received no legitimate scientific peer review and the public"s first exposure to it was through news coverage. Not only does such reporting potentially drive children for consuming healthful fruits and vegetables, the conclusions were based on a misleading interpretation of what constitutes a "safe" level of exposure. Briefly, the authors used values known as the "chronic reference doses," set by the U. S. environmental Protection Agency, as their barometers of safety. Used appropriately, these levels represent the maximum amount of pesticide that could be consumed daily for life without concern. For a 70-year lifetime, for example, consumers would have to ingest this average amount of pesticide every day for more than 25,000 days. It is clear, as the report points out, that there are days on which kids may be exposed to more; it is also clear that there are many more days when exposure is zero. Had the authors more appropriately calculated the cumulative exposures for which the safety standards are meant to apply, there would have been no risks and no warnings. Parents should feel proud, rather than guilty, of providing fruits and vegetables for their children. It is well established that a diet rich in such foods decreases the risk of heart disease and cancer. Such benefits dramatically overwhelm the theoretical risks of tiny amounts of pesticides in food. So keep serving up the peaches, apples, spinach, squash, grapes and pears.

单选题I had to wait for half an hour before he ______ see me. A. can B. may C. might D. could

单选题{{B}}Passage Five{{/B}} Standard usage include those words and expressions understood, used, and accepted by a majority of the speakers of a language in any situation regardless of the level of formality. As such, these words and expressions are well defined and listed in standard dictionaries. Colloquialisms, on the other hand, are familiar words and idioms that are understood by almost all speakers of language and used in informal speech or writing, but not considered acceptable for more formal situations. Almost all idiomatic expressions are colloquial language. Slang, however, refers to words and expressions understood by a large number of speakers but not accepted as appropriate formal usage by the majority. Colloquial expressions and even slang may be found in standard dictionaries but will be so identified. Both colloquial usage and slang are more common in speech than in writing. Colloquial speech often passes into standard speech. Some slang also passes into standard speech, but other slang expressions enjoy momentary popularity followed by obscurity. In some cases, the majority never accepts certain slang phrases but nevertheless retains them in their collective memories. Every generation seems to require its own set of words to describe familiar objects and events. It has been pointed out by a number of linguists that three cultural conditions are necessary for the creation of a large body of slang expressions. First, the introduction and acceptance of new objects and situations in the society; second, a diverse population with a large number of subgroups; third, association among the subgroups and the majority population. Finally, it is worth noting that the terms "standard", "colloquial," and "slang" exist only as abstract labels for scholars who study language. Only a tiny number of the speakers of any language will be aware that they are using colloquial or slang expressions. Most speakers of English will, during appropriate situations, select and use all three types of expressions.

单选题Predicting the future is risky business for a scientist. It is safe to say, however, that the global AIDS epidemic will get much worse before it gets any better. Sadly, this modern plague will be with us for several generations, despite major scientific advances. As of January 2000, the AIDS epidemic had claimed 15 million lives and left 40 million people living with a viral infection that slowly but relentlessly erodes the immune system. Accounting for more than 3 million deaths in the past year alone, the AIDS virus has become the deadliest microbe in the world. In Africa nearly a dozen countries have a rate higher than 10%, including four southern African nations in which a quarter of the people are infected. This is like condemning 16 000 people each day to a slow and miserable death. Fortunately, the AIDS story has not been all gloom and doom . Less than two years after AIDS was recognized, the guilty agent—human immunodeficiency virus, or HIV—was identified. We now know more about HIV than about any other virus, and 14 AIDS drugs have been developed and licensed in the U.S. and Western Europe. The epidemic continues to rage, however, in South America, Eastern Europe and sub-Saharan Africa. By the year 2025, AIDS will be by far the major killer of young Africans, decreasing life expectancy to as low as 40 years in some countries and single-handedly erasing the public health gains of the past 50 years. It is Asia, with its huge population at risk, that will have the biggest impact on the global spread of AIDS. The magnitude of the incidence could range from 100 million to 1 billion, depending largely on what happens in India and China. Four million people have already become HIV-positive in India, and infection is likely to reach several percent in a population of 1 billion. Half a million Chinese are now infected; the path of China"s epidemic, however, is less certain. An explosive AIDS epidemic in the U.S. is unlikely. Instead, HIV infection will continue to plague in about 0.5% of the population. But the complexion of the epidemic will change. New HIV infections will occur predominantly in the underclass, with rates 10 times as high in minority groups. Nevertheless, American patients will live quality lives for decades, thanks to advances in medical research. Dozens of powerful and well-tolerated AIDS drugs will be developed, as will novel means to restore the immune system. A cure for AIDS by the year 2025 is not inconceivable. But constrained by economic reality, these therapeutic advances will have only limited benefit outside the U.S. and Western Europe.

单选题 The key position and role of women in the process of development is increasingly being recognized. Although the three great World Conferences of Women were more concerned with recognizing and compiling approaches to emancipation we can currently confirm a general sharpening of awareness. It has become clear that the Third World cultures, in earlier times strongly matriarchal, have been weakened in this respect by the methods of colonial education which are almost exclusively directed towards the male. Of the many criticisms of this situation let one voice be heard: "Development education' groups and programs are very much male dominated and lack woman's perspective". So, too, the hopes placed in vocational training--"vocationalization'--as an aid to equality have been disappointed since this in its turn was to large extent focused on the male. In these circumstances we should not be surprised that until now women have participated least in the educational processes which have been introduced. Only 20% attend primary school and the percentage of those who leave early is highest among girls. Because of the lack of basic training only around 10% take part in Adult Education programs. Hence it is vitally important to secure a turning point by increasing the awareness of the need for education. The International Conference at Jomtien in 1990 provided the solution to this: "A more educated mother raises a healthier family. She has fewer and better educated children. She is more productive at home and in the workplace and is better able to get further education." Many problems in school are consequences of incorrect or improperly balanced nutrition combined with .inadequate hygiene. Together these factors can lead to failure to keep pace in school. Hence even primary education for girls should be directed towards the basic needs and necessities and provide answers which are as simple as possible. In rural districts such answers will be different from those given in urban areas. The education of girls and women must to a large degree be an education for the life they will lead, tailored to a woman's position. In saying this we are in fact demanding that the education of women, like all educational work in the Third World, should be an integrated part of the community. Consequently there are many partners in this process school, family, small businesses, governmental and non-governmental organizations. The educational skill consists in keeping this interplay active in such a way that there is no deficiency in material content. An important consequence of this is the awakening of the desire to question, which, on the one hand presses for further education and on the other hand for its practical application.

单选题How did people begin to use a fire?

单选题Research on animal intelligence always makes me wonder just how smart humans are. (51) the fruit-fly experiments described in Carl Zimmer's piece in the Science Times on Tuesday. Fruit flies who were taught to be smarter than the average fruit fly (52) to live shorter lives. This suggests that (53) bulbs burn longer, that there is an advantage in not being too terrifically bright. Intelligence, it (54) , is a high-priced option. It takes more upkeep, burns more fuel and is slow off the starting line because it depends on learning—a (55) process—instead of instinct. Plenty of other species are able to learn, and one of the things they've apparently learned is when to (56) . Is there an adaptive value to (57) intelligence? That's the question behind this new research. I like it. Instead of casting a wistful glance (58) at all the species we've left in the dust I.Q.-wise, it implicitly asks what the real (59) of our own intelligence might be. This is on the mind of every animal I've ever met. Research on animal intelligence also makes me wonder what experiments animals would (60) on humans if they had the chance.

单选题(2007)Do you knew what the letters NBA stand______?

单选题Speaker A: You'll never guess what was going on in our school last week. Speaker B: ______. A. Go on, surprise me B. Yes, that must be lovely C. Yes, I can D. You are telling me

单选题The professor's tests show that ______.

单选题W.R. Grace is typical long-lived company that has nm the following business except ______.

单选题(2010) The harder we try,____it is for us to overcome the difficulties and succeed.

单选题 Science textbooks and technical and professional journals are usually made up of several parts and contain various special features, many of which have a standard format.{{U}} (31) {{/U}}usually contain a large number of these parts; journals and{{U}} (32) {{/U}}contain many, but not all of them. Knowing where to look for information and{{U}} (33) {{/U}}to expect in a book can greatly increase your ability to use all the information there. Explanations of and practice using some of these textbook parts and{{U}} (34) {{/U}}are covered in these even numbered lessons. The features in textbooks are{{U}} (35) {{/U}}into the following three categories. Front matter is the{{U}} (36) {{/U}}-numeral paginated section at the front of most books. The text is the main body of the book. The{{U}} (37) {{/U}}matter comprises the additional sections at the back of most books.{{U}} (38) {{/U}}our discussion of these three sections will deal mainly with textbooks, the practice provided will greatly{{U}} (39) {{/U}}your comprehension of scientific{{U}} (40) {{/U}}as well.

单选题—How much sugar is left? A. None B. Nothing C. Not many D. Few

单选题Only the gardener A is capable of endlessly reviving B so much hope that this year, C regardless of drought, flood, typhoon, or his own stupidity, this year D is going to do it right!