单选题The author's main criticism of John Lott is that he ______.

单选题If you are a fan of science fiction, you've no doubt encountered the term nanotechnology. Yet over the past year also, a series of breakthroughs have transformed nanotech from sci-fi fantasy into a real world. Applied science, in the process, inspired huge investments by business, academia, and government. In industries as diverse as health care, computers, chemicals, and aerospace, nanotech is overhauling production techniques, resulting in new and improved products, some of which may already be in your home or workplace. The inspiration for nanotech goes back to a 1959 speech by the late physicist Richard Feynman, then a professor at the California Institute of Technology, titled "There's Plenty of Room at the Bottom. " Four decades later, Chad Mirkin, a Chemistry professor at Northwestern University's $ 34 million nanotech center, used a nanoscale device to etch most of Feynman's speech onto a surface the size of about 10 tobacco smoke particles. What accounts for the sudden acceleration of nanotechnology? A key breakthrough came in 1990, when researchers at IBM's Almaden Research Center succeeded in rearranging individual atoms at will. Using a device' known as a scanning probe microscope, the team slowly moved 35 atoms to spell the three-letter IBM logo, thus proving Feynman right. The entire Logo was less than three nanometers. Soon, scientists were not only manipulating individual atoms but "spray painting" with them as well. Using a tool known as a molecular beam epitaxy, scientists have learned to create ultra fine films of specialized crystals, built up one molecular layer at a time. This is the technology used today to build read-head components for computer hard drives. The next stage in the development of nanotechnology borrows a page from nature. Building a supercomputer no bigger than a speck of dust might seem an impossible task, until one realizes that evolution solved such problems more than a billion years ago. Living cells contain all sorts of nanoscale motors made of proteins that perform myriad mechanical and chemical functions, from muscle contraction to photosynthesis. In some instances, such motors may be re-engineered, or imitated, to produce products and processes useful to humans. How are these biologically inspired machines constructed? Often, they construct themselves, manifesting a phenomenon of nature known as self assembly. The macromolecules of such biological machines have exactly the right shape and chemical binding preferences to ensure that when they combine they will snap together in predesigned ways. For example, the two strands that make up DNA's double helix match each other exactly, which means that if they are separated in a complex chemical mixture, they are still able to find each other easily.

单选题Rental housing, which is an important component of price indices, looks likely to moderate in the next year, in part because of an______ of new homes. A. override B. oversupply C. oversight D. overture

单选题To fund the ______ event and also promote the marketing value of the National Games, the organizing committee set up the Marketing Development Department (MDD). A. beneficent B. expensive C. costly D. luxurious

单选题She always______the smell of fresh bread with her aunt, who loved baking.

单选题How did King Henry find out about the plot?

单选题For many travelers, charter vacations often turn out to cost considerably more than______.

单选题Imagine the psychological impact upon a foe of encountering squads of seemingly invincible warriors ______ armor and ______ superhuman capabilities.

单选题{{B}}Passage Three{{/B}} Mixing populism and celebrity, Clinton dances into office with a week-long multimillion- dollar party full of stars, saxophone music and presidential hugs. The Party was held in a way never seen since World War II. Many movie and music stars showed up, offering their wishes to a new administration. They sang songs like "You know, Bill's gonna get this Country straight." "’ 93! You and me! Uni-tee! /Time to partee with Big Bill and Hillaree." The stars came out in constellation because they recognized in Clinton one of their own. Not just that, he plays the saxophone, a little. Or that Hillary is a smart, tough lawyer, like most Hollywood moguls. What matters is that Clinton is a beacon of middle-class charm, a lover of being loved, a believer in the importance of image, metaphor, style. And he is an ace manipulator of media, selling his symbols directly to the people on TV, without the interference of nosy journalists. It all makes for a wondrous '90s blend of show biz and politics: "This is our time," Clinton said in his Inaugural Address. "Let us embrace it." Last week he had an embrace for everyone, and not just the stars. This huggy-bear President needs to feel the public's approval. At one of the balls of the week, Clinton was like the college student who drops in the night before the exam to show he's one of the guys, then sneaks back to his dorm to cram. Perhaps there is as much Nixon in him (the ambition, the intellect) as Kennedy (the charm, the recklessness, his position as centrist custodian of liberal dreams). He will need to be the best of both men if he is to close, as he said last week, "the gap between our words and our deeds." During the gala, actor Edward James Olmos quoted Lincoln: "We must disenthrall ourselves, and then we shall save our country." Clinton, a good student with a good memory, mouthed the words as Olmos spoke them. Clinton must have realized that, in a different sense and different era, America faces the task of disenthralling itself, of shaking off the Hollywood Stardust and facing facts. In 1992 Clinton vended optimism; now he must be careful in saying so. He sold the nation a miracle product, ALL-NEW HOPE: it gives you cleaner, cheaper government with a fresh minty flavor. But if it doesn't get the stains out, the electorate's high hopes could sour into despair. Then the man called Hope will become the man called Hype. All the big stars and better angels will leave him out in the spotlight, stranded, unmasked.

单选题The doctor did not {{U}}rule out{{/U}} the possibility of food poisoning.

单选题What will NOT happen if the employer puts too much pressure on the employees by using the monitoring system?

单选题{{B}}Passage Four{{/B}} In science the meaning of the word "explain" suffers with civilization's every step in search of reality. Science can not really explain electricity, magnetism, and gravitation; their effects can be measured and predicted, but of their nature no more is known to the modem scientist than to Thales who first speculated on the electrification of amber. Most contemporary physicists reject the notion that man can ever discover what these mysterious forces "really" are. Electricity, Bertrand Russell says, "is not a thing, like St. Paul's Cathedral; it is a way in which things behave." When we have told how things behave when they are electrified, we have told all there is to tell. Until recently scientists would have disapproved of such an idea. Aristotle, for example, whose natural science dominated Western thought for two thousand years, believed that man could arrive at an understanding of 'reality by reasoning from self-evident principles. He felt, for example, that it is a self-evident principle that everything in the universe has its proper place, hence one can conclude that objects fall to the ground because that is where they belong, and smoking goes up because that is where it belongs. The goal of Aristotelian science was to explain why things happen. Modern science was born when Galileo began trying to explain how things happen and thus originated the method of controlled experiment which now forms the basis of scientific investigation.

单选题In the 1930's, when millions of comic books were ______ the young with fighting and killing, nobody seemed to notice that the violence of cars in the streets was more hysterical. A. inundating B. imitating C. immolating D. insulating

单选题His major task is to Uintegrate/U the work of various bureaus under the ministry.

单选题Imagine asking a presidential candidate to sit down for a sensitivity session on gay and lesbian issues. That's exactly what we did last week in Austin, Texas. George W. Bush invited us, a dozen gay Republicans, after he'd refused to meet with a gay Republican group that had criticized him. Our meeting set an important precedent: never again will a major-party candidate be able to run for president without addressing gay and lesbian issues. Bush didn't like everything we had to say. I was struck by his lack of familiarity with the issues, as well as by his desire to learn. I described how my partner, Rob Morris, and I have been in a 17-year relationship. We both come from healthy, strong, religious families. Rob grew up in a conservative Republican family in Georgia; I come from a longtime Republican family in Wisconsin. I'm now the vice president of my Lutheran church. I wanted Governor Bush to understand that long-term, loving relationships, stable families, strong faith-based traditions and Republican voting histories are all part of the gay and lesbian community. Our stories had an impact. Bush admitted that, growing up in Texas, he had not been as open to elements of America's diverse culture. He had a narrow set of friends and a firm set of traditions. But he was surprised and dismayed to hear that people saw him as intolerant. " What have I said that sent that signal?" he asked repeatedly. We confronted him about his reported statement that if you were openly gay or lesbian you would not be considered for a job in his administration. "I never said that," he insisted, assuring us he would hire gays and lesbians who both were qualified and shared his political views. Our perspective was clearly eye-opening to him. When one of us talked about his lesbian sister and her partner adopting children, the governor acknowledged his often-stated belief that gays should not adopt. "Now you're telling me of a very loving, caring relationship," he said. "I really appreciate hearing that. " We stressed that a Bush administration could not roll back any of the progress made in recent years. We talked about AIDS funding and research. Though Bush was attentive — and does show a willingness to hear all sides — I don't think we changed his positions. He still opposes gay marriage and classifying crimes against gays as hate crimes. To be honest, Bush still has a long way to go. But I think he's a lot farther along today than he was last week.

单选题 At the Kyoto conference on global warming in December 1997, it became abundantly clear how complex it has become to work out international agreements relating to the environment be- cause of economic concerns unique to each country. It is no longer enough to try to forbid certain activities or to reduce emissions of certain substances. The global challenges of the interlink between the environment and development caressingly bring us to the core of the economic life of the states. During deep cuts in emissions harmful to the ozone layer, these reductions were made possible because substitutions had been found for many of the harmful chemicals and, more important, because the harmful substances could be replaced without negative effects on employment and the economies of states. Although the threat of global warming has been known to the world for decades and all countries and leaders agree that we need to deal with the problem, we also know that the effects of measures, especially harsh measures taken in some countries, would be nullified if other countries do not control their emissions. Whereas the UN team calls on the emissions to be cut globally by 60% to stabilize the content of CO2 in the atmosphere, this path is not feasible for several reasons. Such deep cuts would cause a breakdown of the world economy. Important and populous low- or medium-income countries are not yet willing to undertake legal commitments about their energy uses. In addition, the state of world technology would not yet permit us to make such a big leap. We must, however, find a solution to the threat of global warming early in the 21st century. Such a commitment would require a degree of shared vision and common responsibilities new to humanity. Success lies in the force of imaginations, in imagining what would happen if we fail to act. Although many living in cold regions would welcome the global warming effect of a warmer summer, few would cheer the arrival of the subsequent tropical diseases, especially where there had been one.