单选题What kind of ambiguity exists in the sentence "John is a lion"? A. Lexical ambiguity. B. Structural ambiguity. C. Metaphorical ambiguity. D. Logic ambiguity.

单选题The northernmost part of Great Britain is[A] Northern Ireland.[B] Scotland.[C] England.[D] Wales.

单选题Howcouldtheresearchersexplorethemummynow?

单选题What does the author try to tell us in this passage?

单选题{{B}}TEXT B{{/B}} So far, inflation is roaring in only a few sectors of the economy. While platinum has soared 121 percent, soybeans have risen 115 percent, and an index of Real Estate Investment Trusts has climbed 42 percent since May 2001, the consumer price index (CPI) has gone up only 4.2 percent during the same period. The challenge is figuring out what happens next. Astute investors are asking two questions: 1) Will the dollar continue to decline? 2) Which assets will continue to inflate? The value of the dollar matters because much of what Americans buy comes from abroad. And in the past two years, the dollar has been slipping badly: down some 25 percent against a basket of foreign currencies, including the euro and the yen. That makes imported goods more expensive. If the dollar falls further, the rise in prices could boost inflation. And that's exactly what some analysts predict. "This is not a run-of-the-mill problem where the currency corrects 25 percent" then stabilizes, says David Tice, Dallas-based manager of the Prudent Global Income Fund. "We have an economy that's very dependent upon ever-increasing amounts of debt. Look at borrowing in this country for automobiles and housing. At the federal level, we are creating credit as if it is going out of style. Given that, we think the dollar can decline substantially more from here." That's why Mr. Tice's income fund has invested in government bonds in countries that are major trading partners of the US. These bonds tend to increase in value as the dollar weakens. There are other ways for investors to protect themselves from inflation. For example: TIPS (Treasury Inflation-Protected Securities) are US government bonds that increase both principal and interest payments in line with the CPI/U, which measures prices for urban dwellers. Thus, if the price of consumer goods goes up, TIPS owners get a boost in their rate of return. That's a level of inflation protection that most bonds and money-market funds don't provide. Still, there are no guarantees. If real interest rates rise faster than inflation, TIPS can lose value if they' re not held to maturity. "TIPS have generally been less volatile than traditional bonds," but investors have already seen periods when their inflation-protection doesn't match the actual rise in prices, warns Duane Cabrera, head of the personal financial planning group at Vanguard, based in Valley Forge, Pa. For example, the year-over-year change in the CPI/U is running about 1.9 percent, he points out, but college costs have been rising about 5 percent annually. Investors should also discuss the tax consequences with their investment advisers, Mr. Cabrera notes. On the stock front, investors can also turn to natural-resource stocks or mutual funds that invest in them. A slightly more exotic option: exchange-traded funds, which act like mutual funds but trade like stocks. Commodities offer another avenue for profit during inflationary times. Individual investors probably want to avoid commodity trading, often a wild and woolly experience. But certain mutual funds offer share- holders a chance to profit when commodity prices go up. The PIMCO Commodity Real Return Fund, for example, provides exposure to the performance of the Dow-Jones AIG Commodity Index while generating income from TIPS. Another option: the Oppenheimer Real Asset Fund, which is actively managed and tracks the Goldman Sachs Commodity Index. There's no clear winner between these stock funds and the commodities their companies have invested in. When commodity prices are hiring, natural-resource firms can protect themselves by hedging their risks, says Kevin Baum, portfolio manager of the Oppenheimer Real Asset Fund. On the other hand, hedging may keep them from benefiting when commodity prices rise. And the stocks can be more volatile than the commodities themselves. Gold funds typically are three times more volatile than the price of gold itself. Sometimes, the commodities and funds tied to those commodities move in opposite directions, Mr. Baum says. PIMCO' s Mr. Harris is quick to note that many commodity prices have been soaring. So the key question is: Which ones will continue to rise in price? Individual investors should maintain strict discipline when they pick commodities funds, he says.

单选题One of the most interesting paradoxes in America today is that Harvard University, the oldest institution of higher learning in the United States, is now engaged in a serious debate about what a university should be, and whether it is measuring up. Like the Roman Catholic church and other ancient institutions, it is asking-still in private rather than in public whether its past assumptions about faculty, authority, admission, courses of study, are really relevant to the problems of the 1990's. Should Harvard-or any other university-be an intellectual sanctuary, apart from the political and social revolution of the age, or should it be a laboratory for experimentation with these political and social revolutions; or even an engine of the revolution? This is what is being discussed privately in the big clapboard houses of faculty members around the Harvard Yard. Walter Lip Mann, a distinguished Harvard graduate, defined the issue several years ago. "If the universities are to do their work." he said," they must be independent and they must be disinterested... They are places to which men can turn for judgments which are unbiased by partisanship and special interest. Obviously, the moment the universities fall under political control, or under the control of private interest, or the moment they themselves take a hand in politics and the leadership of government, their value as independent and disinterested sources of judgment is impaired... " This is part of the argument that is going on at Harvard today. Another part is the argument of the militant and even many moderate students: that a university is the keeper of our ideals and morals, and should not be " disinterested" but activist in bringing the nation's ideals and actions together. Harvard's men of today seem more trebled and less sure about personal, political and academic purpose than they did at the beginning. They are not even clear about how they should debate and resolve their problems but they are struggling with privately, and how they come out is bound to influence American university and political life in the 1990's.

单选题Murder in the Cathedral is a verse drama by______that portrays the assassination of Archbishop Thomas Becket in Canterbury Cathedral in 1170. A. T. S. Eliot B. Christopher Fry C. W. B. Yeats D. G.B. Shaw

单选题What might be the author's answer to the question: "Should a mother report on a warn ?

单选题[此试题无题干]

单选题At the end of the story, there seems to be a sense of ______ between March and the fox..

单选题Now, listen to Part One of the interview. Questions l to 5 are based on Part One of the interview.

单选题The word tail once referred to the "the tail of a horse", but now it is used to mean "the tail of any animal". This is an example of________.

单选题[此试题无题干]

单选题Researchers investigating brain size and mental ability say their work offers evidence that education protects the mind from the brain' s physical deterioration. It is known that the brain shrinks as the body ages, but the effects on mental ability are different from person to person. Interestingly, in a study of elderly men and women, those who had more education actually had more brain shrinkage. "That may seem tike bad news," said study author Dr. Edward Coffey, a professor of psychiatry and of neurology at Henry Ford Health System in Detroit. However, he explained, the Finding suggests that education allows people to withstand more brain-tissue loss before their mental functioning begins to break down. The study, published in the July issue of Neurology, is the first to provide biological evidence to support a concept called the "reserve" hypothesis, according to the researchers. In recent years, investigators have developed the idea that people who are more educated have greater cognitive reserves to draw upon as the brain tissue to spare. Examining brain scans of 320 healthy men and women ages 66 to 90, researchers found that for each year of education the subjects had, there was greater shrinkage of the outer layer of the brain known as the cortex. Yet on tests of cognition and memory, all participants scored in the range indicating normal. "Everyone has some degree of brain shrinkage," Coffey said. "People lose (on average) 2.5 percent decade starting at adulthood. There is, however, a "remarkable range" of shrinkage among people who show no signs of mental decline, Coffey noted. Overall health, he said, accounts for some differences in brain size. Alcohol or drug use, as well as medical conditions such as diabetes and high blood pressure, contribute to brain-tissue loss throughout adulthood. In the absence of such medical conditions, Coffey said, education level helps explain the range of brain shrinkage exhibited among the mentally-fit elderly. The more-educated can withstand greater loss. Coffey and colleagues gauged shrinkage of the cortex by measuring the cerebrospinal fluid surrounding the brain. The greater the amount of fluid, the greater the cortical shrinkage. Controlling for the health factors that contribute to brain injury, the researchers found that education war related to the severity of brain shrinkage. For each year of education from first grade on, subjects had an average of 1.77 milliliters more cerebrospinal fluid around the brain. For example, Coffey' s team reported, among subjects of the same sex and similar age and skull size, those with 16 years of education had 8 percent to l0 percent more cerebrospinal fluid compared with those who had four years of schooling. Of course, achieving a particular education level is not the definitive measure of someone' s mental capacity. And, said Coffey, education can be "a proxy for many things". More-educated people, he noted, are often less likely to have habits, such as smoking, that harm overall health. But Coffey said that his team' s findings suggest that like the body, the brain benefits from exercise. "The question is whether by continuing to exercise the brain we can forestall the effects of (brain shrinkage)," he said. "My hunch is that we can." According to Coffey, people should strive throughout life to keep their brains alert by exposing themselves to new experiences. Travelling is one way to stimulate the brain, he said; a less adventuresome way is to do crossword puzzles. "A hot topic down the road," Coffey said, "will be whether education even late in life has a protective effect against mental decline." Just how education might affect brain cells is unknown. In their report, the researchers speculated that in people with more education, certain brain structures deeper than the cortex may stay intact to compensate for cortical shrinkage.

单选题The study of how we do things with words is the study of ______.

单选题______ is of ten called the "backbone of North America", extending from the Northwest to the Southeast of American land.

单选题The capital of Canada is______.

单选题______ takes London as the setting in most of his novels.

单选题______ is considered to be the very beginning of the American War of Independence.

单选题According to the passage, the shape of the target is reported to the echolocating bat by changes in the ______.