单选题I'm sure that she'll cope with the changes very well; she is very ______.

单选题The Department of Resources notified the town council that the water supply was

单选题The government requires that a census be taken every five years so that accurate statistics may be ______ .

单选题Some studies confirmed that this kind of eye disease was ______ in tropic countries.

单选题He does nothing that violates the interests of the collective.

单选题It can be hard to live up to one's ______.

单选题Among the more common scenes are those in the courtyards of apartment buildings where the children play, while their elders gossip on benches, and young people Ucongregate/U to listen to music.

单选题Over the past century, all kinds of unfairness and discrimination have been condemned or made illegal. But one insidious form continues to thrive: alphabetism. This, for those as yet unaware of such a disadvantage, refers to discrimination against those whose surnames begin with a letter in the lower half of the alphabet. It has long been known that a taxi firm called AAAA cars has a big advantage over Zodiac cars when customers thumb through their phone directories. Less well known is the advantage that Adam Abbott has in life over Zoё Zysman. English names are fairly evenly spread between the halves of the alphabet. Yet a suspiciously large number of top people have surnames beginning with letters between A and K. Thus the American president and vice-president have surnames starting with B and C respectively; and 26 of George Bush's predecessors (including his father) had surnames in the first half of the alphabet against just 16 in the second half. Even more striking, six of the seven heads of government of the G7 rich countries are alphabetically advantaged (Berlusconi, Blair, Bush, Chirac, Chrétien and Koizumi). The world's three top central bankers (Greenspan, Duisenberg and Hayami) are all close to the top of the alphabet, even if one of them really uses Japanese characters. As are the world's five richest men (Gates, Buffet, Allen, Ellison and Albrecht). Can this merely be coincidence? One theory, dreamt up in all the spare time enjoyed by the alphabetically disadvantaged, is that the rot sets in early. At the start of the first year in infant school, teachers seat pupils alphabetically from the front, to make it easier to remember their names. So short-sighted Zysman junior gets stuck in the back row, and is rarely asked the improving questions posed by those insensitive teachers. At the time the alphabetically disadvantaged may think they have had a lucky escape. Yet the result may be worse qualifications, because they get less individual attention, as well as less confidence in speaking publicly. The humiliation continues. At university graduation ceremonies, the ABCs proudly get their awards first; by the time they reach the Zysmans most people are literally having a ZZZ. Shortlists for job interviews, election ballot papers, lists of conference speakers and attendees, all tend to be drawn up alphabetically, and their recipients lose interest as they plough through them.

单选题The president tried to stay in touch with the ambassador ______.

单选题______a matter of disagreeing with the theory of independence______rejecting its implications: that the romances may be taken in any or no particular order, that they have no cumulative effect, and that they are as separate as the works of a modern novelist.

单选题A ______ to this problem is expected to be found before long.

单选题She could have cried, but she had no time to dwell ______her disappointment, for suddenly a harsh voice hailed her from below. A. on B. at C. in D. for

单选题To compensate for the substantial decline in the availability of fossil fuels in future years, we will have to provide at least ______ alternative energy source.(2014年北京航空航天大学考博试题)

单选题These technological advances in communication have______ the way people do business.(2006年厦门大学考博试题)

单选题The patients______ symptoms to get appointments quicker and ask doctors to hide the truth from insurance companies. A. feign B. obstruct C. coinage D. conjure

单选题Identical twin sisters have led British scientists to a breakthrough in leukemia research that Upromises /Umore effective therapies with fewer harmful side-effects.

单选题His doctor has told him he mustn't drink, but he still has the occasional brandy______. (2013年3月中国科学院考博试题)

单选题Ever since its discovery, Pluto has never really fitted in. After the pale and glowing giant Neptune, it is little more than a cosmic dust mite, swept through the farthest reaches of the solar system on a planet wildly tilted relative to the rest of the planets. It is smaller than Neptune's largest moon, and the arc of its orbit is so oval that it occasionally crosses its massive blue neighbor's path. For years, it has been seen as our solar system's oddest planet. Yesterday, however, scientists released perhaps the most convincing evidence yet that Pluto, in fact, is not a planet at all. For the first time, astronomers have peered into a belt of rocks beyond Pluto unknown until 10 years ago—and found a world that rivals Pluto in size. The scientists posit that larger rocks must be out there, perhaps even larger than Pluto, meaning Pluto is more likely the king of this distant realm of space detritus than the tiniest of the nine planets. When discovered in 1930, "Pluto at that point was the only thing (that far) out there, so there was nothing else to call it but a planet," says Mike Brown, an astronomer at the California Institute of Technology in Pasadena. "Now it just doesn't fit." In one sense, the question of Pluto's planetary status is arcane, the province of pocket-protected scientists and sun-deprived pen pushers determined to decide some official designation for a ball of dust and ice 3 billion miles away. Yet it is also unquestionably something more. From science fair dioramas to government funding, planets hold a special place in the public imagination, and how Pluto is eventually seen—by kids and Congress alike—could shape what future generations learn about this mysterious outpost on the edge of the solar system. The debate has split the astronomical community for decades. Even before the distant band of rocks known as the Kuiper Belt was found, Pluto's unusual behavior made it suspicious. Elsewhere, the solar system fit into near families: the rocky inner planets, the asteroid belt, the huge and gaseous outer planets. Pluto, though, was peculiar. With the discovery of the Kuiper Belt—countless bits of rock and ice left unused when the wheel of the solar system first formed—Pluto suddenly seemed to have cousins. Yet until yesterday, it held to its planetary distinction because it was far larger than anything located there. The rub now is Quaoar (pronounced KWAH-oar), 1 billion miles beyond Pluto and roughly half as large. Named after the creation force of the tribe that originally inhabited the Los Angeles basin, Quaoar forecasts problems for the erstwhile ninth planet, says discoverer Dr. Brown: "The case is going to get a lot harder to defend the day somebody finds something larger than Pluto," To some, the problem is not with Pluto, but the definition of "planet. "In short, there is none. To the Greeks, who coined the term, it meant "wanderer," describing the way that the planets moved across the night sky differently from the stars behind them. Today, with our more nuanced understanding of the universe, the word no longer has much scientific meaning. New York's Hayden Planetarium caused a commotion two years ago by supposedly demoting Pluto, lumping it with the Kuiper Belt objects in its huge mobile of the solar system. In reality, however, the planetarium was making a much broader statement, says Nell Degrasse Tyson, an astrophysicist there. The textbooks of the future should focus more on families of like objects than "planets." The discovery of Quaoar strengthens this idea. "Everyone needs to rethink the structure of our solar system," he says. "We've just stopped counting planets." Still, many are loath to part with the planet Pluto. They note that Pluto, in fact, is distinct from many Kuiper Belt objects. It has a thin atmosphere, for one. It reflects a great deal of light, while most Kuiper Belt objects are very dark. And unlike all but a handful of known Kuiper Belt objects, it has a moon. "Maybe Pluto, then, should be representative of a new class of planets," says Mark Sykes, an astronomer at the University of Arizona in Tucson. "It's the first example, and we are just beginning to find this category./

单选题The more people are jammed together, the more______and irrational they become.