单选题When she was asked why she was ahsent for the party, no answer was______. (2007年中国矿业大学考博试题)

单选题I really believe ______ this project and will do everything I can to support it. A. in B. on C. with D. over

单选题What would happen if students were ______of books?

单选题In the past few decades, remarkable findings have been made in ethology, the study of animal social behavior. Earlier scientists had (21) that nonhuman social life was almost totally instinctive or fixed by genetics. Much more careful observation has shown that (22) variation occurs among the social ties of most species, showing that learning is a part of social life. That is, the (23) are not solely fixed by the genes (24) , the learn ing that occurs is often at an early age in a process that is called imprinting. Imprinting is clearly (25) instinctive, but it is not quite like the learning of humans; it is something in between the two. An illustration best (26) the nature of imprinting. Once, biologists thought that ducklings followed the mother duck because of instincts. Now we know that, shortly (27) they hatch, ducklings fix (28) any object about the size of a duck and will henceforth follow it. So ducklings may follow a basketball or a briefcase if these are (29) for the mother duck at the time when imprinting occurs. Thus, social ties can be considera bly (30) , even ones that have a considerable base (31) by genetics. Even among the social insects something like imprinting (32) influence social behav ior. For example, biologists once thought bees communicated with others purely (33) in stinct. But, in examining a "dance" that bees do to indicate the distance and direction of a pollen source, observers found that bees raised in isolation could not communicate effec tively. At a higher level, the genetic base seems to be much more for an all-purpose learn ing rather than the more specific responses of imprinting. Chimpanzees, for instance, gen erally (34) very good mother but Jane Goodali reports that some chimps carry the infant upside down or (35) fail to nurture the young.

单选题In October 2002, Goldman Sachs and Deutsche Bank (1) a new electronic market (www.gs.com/econderivs/) for economic indices that (2) substantial economic risks, such as nonfarm payroll ( a measure of job availability) and retail sales. This new market was made possible by a (3) rating technology, developed by Longitude, a New York company providing software for financial markets, (4) the Parimutuel Digital Call Auction. This is "digital" (5) of a digital option : ie, it pays out only if an underlying index lies in a narrow, discrete range. In effect, Longitude has created a horse race, where each "horse" wins if and (6) the specified index falls in a specified range. By creating horses for every possible (7) of the index, and allowing people to bet (8) any number of runners, the company has produced a liquid integrated electronic market for a wide array of options on economic indices. Ten years ago it was (9) impossible to make use of electronic information about home values. Now, mortgage lenders have online automated valuation models that allow them to estimate values and to (10) the risk in their portfolios. This has led to a proliferation of types of home loan, some of (11) have improved risk-management characteristics. We are also beginning to see new kinds of (12) for homes, which will make it possible to protect the value of (13) ,for most people, is the single most important (14) of their wealth. The Yale University-Neighbourhood Reinvestment Corporation programme, (15) last year in the city of Syracuse, in New York state, may be a model for home-equity insurance policies that (16) sophisticated economic indices of house prices to define the (17) of the policy. Electronic futures markets that are based on econometric indices of house prices by city, already begun by City Index and IG Index in Britain and now (18) developed in the United States, will enable home-equity insurers to hedge the risks that they acquire by writing these policies. These examples are not impressive successes yet. But they (19) as early precursors of a technology that should one day help us to deal with the massive risks of inequality that (20) will beset us in coming years.

单选题He implied that the President had lied and ______ obstructed justice.

单选题The manager wants to know if they ______ our letter yet.

单选题Many psychologists in the early twentieth century believed that humans use only 10 percent of their brains, and even the great Albert Einstein once wrote that most people use only a small portion of the grey matter between their ears. It's a theory that has often been put forward in television documentaries, magazines, advertisements and books over the past century. But nearly all scientists now agree the 10 percent theory is completely unfounded . In fact, they question how this figure was ever arrived at in the first place and what areas of the brain are supposed to be unneeded. The theory supposes that if 90 percent of the brain were removed, a person would still be able to function normally, while in reality it is known that damage to even a small area of the brain can result in extremely serious physical injuries and that many areas of the brain are used at the same time for some complex activities or thought processes. Throughout the course of one day, most areas of the brain are active at some time, even during sleep. The 10 percent theory suggests that certain areas of the brain are not used, but scans slow activities throughout the entire brain and not in any separate part. The final argument against the 10 percent theory is the fact that doctors carefully map the brain before removing brain cancers so that they don't affect other essential areas. From an evolutionary point of view, it's highly unlikely that our comparatively larger brains would have evolved from our ancestors if the extra areas were not needed. In fact, there is absolutely no evidence to support the 10 percent theory.

单选题Man: Are you finished with school already? Woman: No. I have one more semester, but it would be great to have a job lined up. Question: What does the woman mean? A. She will line up to apply for a job. B. She hopes to get a job offer before graduation. C. She has already had a job offer. D. She'll look for a job soon after graduation.

单选题 Hope may be the lovely, lyrical, inspiring thing many people believe it is-"the thing with feathers," as Emily Dickinson called it. But to scientists, it's also a more dull thing as well: a skill, a tool, a simple choice that is a lot less accidental or lucky. As psychologist Shane Lopez, a senior scientist at the Gallup organization argues in his new book, Making Hope Happen, it's also much more attainable than it seems. In both children and adults, there can be a hard-to-deny link between a robust sense of hope and either work productivity or academic achievement. In studies of this idea, hope is measured by a widely accepted psychological survey and productivity is measured by grades earned, sales made, widgets manufactured etc.. When Lopez and his colleagues recently gathered up a large body of this research and subjected it all to a meta-analysis, they came up with what they believe are very solid numbers: "Our finding was that hope accounts for about 14% of work productivity and 12% of academic achievement. " Hoping, Lopez stresses, is a lot different from wishing, though the two are often mixed. The super- bestseller The Secret is based on the vaguely defined and not-exactly peer-reviewed "law of attraction," which in this case means that just having positive thoughts about wealth, love, success and more can draw all of those things to you. "This wonderful future will happen for you if you just sit back and wish hard enough," Lopez says. But wishing, he explains is only an element of hope-it is, in a sense, hope without a plan. And that often leads nowhere. Effective hoping, Lopez says, is a very deliberate, three-step process. First there is selecting a goal, whether short-term or long term. Then you have to consider the gap between where you are now and where you will be when you achieve the goal, and lay out a series of sequential, short-term goals that will allow you to close that gap. Finally, there is the execution, establishing a plan for when you will begin to implement those steps and where and how you will execute them. It's far too much to say that effective hoping is the only—or even the biggest—part of what it takes to succeed. If 14% of business productivity can be attributed to hope, which means 86% is dependent on raw talent, capricious business cycles, the quality of the product you're selling, and often pure luck. But even if hope is just one ingredient in all of that, it's a catalyzing, energizing one-the gas in the tank, the fuel rod in the reactor, the Mentos in the Pepsi. Hope may be the thing with feathers-but it's also the thing with power.

单选题What should you do if you are denied the pay raise?

单选题—"How about a game chess?" A. I don't mind. B. Why not? C. I agree. D. Let's fight.

单选题—The light in the office is still on. —Oh ,I forget ______.A. turning it offB. turn it offC. to turn it offD. having turned it off

单选题Which of the following is mentioned by the author as a reason why the baleen whale population has been reduced?

单选题Speaker A: What seems to be the problem with the blouse, miss? Speaker B:_____

单选题 　　　　　　　　　　　A　Quiet student offered　room in private house.　Share bath and kitchen.　$ 50 weekly excluding　gas/electricity 　　　　　　　　　　B　Professional ouple, 3 children,　2, 4 and 6, offer single room,　rent-free, to student willing to　baby-sit 3 evenings weekly,　occasional weekends. Live as 　family. 　　　　　　　　　　　C　Double room suitable 2 students sharing.　Cooking facilities, share bathroom.　Non-smokers only.　$ 70 each weekly, excluding gas/electricity. 　　　　　　　　　　D　Teacher going on 3-month study course　abroad willing to let comfortably 　furnished　flat in prestige block to responsible　students. 2 double bedrooms, I single. 　Use　of garden.　Rent $ 70 each, weekly, inclusive.　No late parties. INTERESTED? CONTACT: Joan Benson, student accommodation officer.　　　　　　　　　　　　　Room 341 Moff Building. Fri. 10: 00 a. m. —5: 00 p. m.

单选题 The Portuguese (give) a great deal of credit to (one man) for (having promoted) sea travel, that man (was) Prince Henry the navigator, who lived in the 15th century.

单选题The child's earliest words deal with concrete objects and actions, it is much later that he is able to grapple with ______. A. decisions B. abstractions C. opponents D. mathematics

单选题If you______the bottle and cigarettes, you'll be much healthier.