单选题The more you give her, ______ she seems to appreciate it. A．lesser B．the lesser C．less D．the less

单选题For the whole period of two months, there______no rain in this area. Now the crops are dead.

单选题Man: Have you any idea what Jack Johnson's doing these days? Woman: Do you know, I've lost track of him. Question: What does the woman mean? A. She has no idea where Jack is. B. She last saw Jack at the race track. C. She's been trying to track Jack. D. Jack was lately seen driving a truck.

单选题It is ______ impossible to find a high building in this part of this poorly developed area.

单选题_______ the weather forecast it will rain heavily late this morning.

单选题{{B}}Passage One{{/B}} Gravity is a slippery beast. We don't know how strong it is, how it works or how fast its effects move. But this year we made progress. October saw the most accurate measurement yet of Newton's gravitational constant(引力常数 ), G, a measure of the strength of the gravitational interaction between two objects. A Swiss team calculated G's value by measuring how the gravitational pull of two huge tanks of mercury affected the weights of test masses. However, there are discrepancies between measurements of G made in different labs. This year a highly contentious(有争议的) explanation for this was proposed. A group of string theorists proposed that gravity is subtly affected by magnetic fields, and that G should be larger near Earth's poles where the magnetic field is stronger. Sure enough, this fits with the measurements so far. So G's varying values might just be the first proof of the hidden dimensions predicted by string theory. Equally tantalising is possible evidence for the existence of gravitational waves, the ripples in space-time supposedly caused by abrupt, violent cosmic events. An Italian team reported that two massive aluminium bars, one at CERN(欧洲粒子物理研究所) near Geneva, the other in Italy, had once vibrated in unison(一致)—perhaps as a result of a passing gravitational wave, they suggest. The claims will be closely scrutinised by gravity researchers in Washington state. They got to turn on a very expensive toy this year. LIGO, one of the biggest scientific instruments ever built. Its twin sets of intersecting 4-kilometre-long laser beams should be very sensitive to any waves. But so far the $400-million machine has not seen anything. At least one gravitational mystery has (hopefully) been wrapped up this year. when you move something, how long before its new position will affect its gravitational pull on surrounding objects? In other words, what is the speed of gravity? Newton thought the effect instantaneous, but Einstein said it could travel no faster than the speed of light. Astronomers have finally devised a way to test which one of them was right, based on the way gravity bends radio waves from a distant quasar(类星体). They finished the experiment in September. We don't yet know the answer but our money is on Einstein.

单选题The most significant measure we should take to stop terrorists is to______them of material and moral support from within the country. A. squeeze B. eliminate C. prevent D. deprive

单选题 The American economy is growing, according to the most recent statistics, at the high rate of 7%, and is in the middle of the largest peacetime expansion in American history. We read in the newspapers that practically everyone who wants a job can get one. Microsoft is running advertisements in the New York Times practically begging Congress to issue more visas for foreign computer and information technology workers. In this environment, it is shocking that one group of Americans, people with disabilities, have such a high level of unemployment: 30% are not employed—the same percentage as when the Americans with Disabilities Act became law. Not only did their employment and labor earnings fall during the recession of the early 1990s, but employment and earnings continued to fall during the long economic expansion that followed. Many of these people are skilled professionals who are highly marketable in today's economy. Part of the problem is discrimination, and part recent court rulings favoring employers in ADA lawsuits. Discrimination against people with disabilities is, unfortunately, alive and well, despite the legal prohibitions against discrimination in hiring people with disabilities. 79% of disabled people who are unemployed cite discrimination in the workplace and lack of transportation as major factors that prevent them from working; studies have also shown that people with disabilities who find jobs earn less than their co-workers, and are less likely to be promoted. Unfavorable court rulings have not been helpful, either. Research by law professor Ruth Colker of Ohio State University has shown that in the eight years after the ADA went into effect, employer-defendants prevailed in more than 93% of the cases decided by trial. Of the cases appealed, employers prevailed 84% of the time. Robert Burgdorf. Jr., who helped draft the ADA, has written, "legal analysis has proceeded quite a way down the wrong road." Disability activists and other legal scholars point out that Congress intended the ADA as a national mandate for the ending of discrimination against people with disabilities. Instead, what has occurred, in the words of one writer, is that the courts "have narrowed the scope of the law, redefined 'disability', raised the price of access to justice and generally deemed disability discrimination as not worthy of serious remedy." But perhaps the greatest single problem is the federal government itself, where laws and regulations designed to help disabled people actually provide an economic disincentive to work. As Sen. Edward Kennedy wrote, "the high unemployment rate among people receiving federal disability benefits is not because their federal benefits programs have 'front doors that are too big', but because they have 'back doors that are too small'."

单选题When they were children, Terri Schiavo's brother Bobby accidentally locked her in a suitcase. She tried so hard to get out that the suitcase jumped up and down and screamed. The scene predicted, horribly, how she would end, though by that stage she had neither walked nor talked for more than 15 years. By the time she finally died on March 31 st, her body had become a box out of which she could not escape. More than that, it had become a box out of which the United States government, Congress, the president, the governor of Florida and an army of evangelical protestors and bloggers would not let her escape. Her life, whatever its quality, became the property not merely of her husband (who had the legal right to speak for her) and her parents (who had brought her up), but of the courts, the state, and thousands of self-appointed medical and psychological experts across the country. The chief difference between her case and those of Karen Quinlan and Nancy Cruzan, much earlier victims of Persistent Vegetative State (PVS), was the existence of the internet. When posted videotapes showed Mrs Schiavo apparently smiling and communicating with those around her, doctors called these mere reflex activity, but to the layman they seemed to reveal a human being who should not be killed. On March 20th, a CAT scan of Mrs Schiavo's brain-the grey matter of the cerebral cortex more or lass gone, replaced by cerebrospinal fluid-was posted on a biog. By March 29th, it had brought 390 passionate and warring responses. All this outside interference could only exacerbate the real, cruel dilemmas of the case. After a heart attack in February 1990, when she was 26, Mrs Schiavo's brain was deprived of oxygen for five minutes and irreparably damaged. For a while, her family hoped she might be rehabilitated. Her husband Michael bought her new clothes and wheeled her round art galleries, in case her brain could respond. By 1993, he was sure it could not, and when she caught an infection he did not want her treated. Her parents disagreed, and claimed she could recover. From that point the family split, and litigation started. Each side, backed by legions of supporters, accused the other of money-grubbing and bad faith. A Florida court twice ordered Mrs Schiavo's feeding tube to be removed and Jeb Bush, the governor of Florida, overruled it. The final removal of the tube, on March 18th, was followed by an extraordinary scene, in the early hours of March 21st, when George Bush signed into law a bill allowing Mrs Schiavo's parents to appeal yet again to a federal court. But by then the courts, and two-thirds of Americans, thought that enough was enough. On March 24th the Supreme Court declined to hear the case.

单选题Sometimes in drawing and designing, the sign X______the unknown number. A. facilitates B. fascinates C. denotes D. jots

单选题Cough Whitlam ______.

单选题______be allowed to walk on the grass.

单选题—He was nearly drowned once. —When was ______? —______ was in 1998 when he was in middle school. A) that; It B) this; This C) this; It D) that; This

单选题______refer to the relationship that linguistic units have with other units because they may occur together in a sentence. (西安外国语学院2006研)

单选题

单选题Why are some major oil companies mentioned in the first paragraph?

单选题It is very convenient for me to go to work every day because the bus runs______.

单选题When Peter was at collage, he paid a ______ visit to the library.A. oftenB. frequentlyC. recentD. frequent

单选题Sporting activities are essentially modified forms of hunting behavior. Viewed biologically, the modern footballer is in reality a member of a hunting group. His killing weapon has turned into a harmless football and his prey (猎物) into a goal-mouth. If his aim is accurate and he scores a goal, he enjoys the hunter"s triumph of killing his prey. To understand how this transformation has taken place, we must briefly look back at our forefathers. They spent over a million years evolving as co-operative hunters. Their very survival depended on success in the hunting-field. Under this pressure their whole way of life, even their bodies, became greatly changed. They became chasers, runners, jumpers, aimers, throwers and prey-killers. They co-operated as skillful male-group attackers. Then about ten thousand years ago, after this immensely long period of hunting their food, they became farmers. Their improved intelligence, so vital to their old hunting life, was put to a new use—that of controlling and domesticating their prey. The hunt became suddenly out of date. The food was there on the farms, awaiting their needs. The risks and uncertainties of the hunt were no longer essential for survival. The skills and thirst for hunting remained, however, and demanded new outlets. Hunting for sport replaced hunting for necessity. This new activity involved all the original hunting sequences, but the aim of the operation was no longer to avoid starvation. Instead the sportsmen set off to test their skill against prey that were no longer essential to their survival. To be sure, the kill may have been eaten, but there were other, much simpler ways of obtaining a meaty meal.

单选题It"s true that high-school coding classes aren"t essential for learning computer science in college. Students without experience can catch up after a few introductory courses, said Tom Cortina, the assistant dean at Carnegie Mellon"s School of Computer Science. However, Cortina said, early exposure is beneficial. When younger kids learn computer science, they learn that it"s not just a confusing, endless string of letters and numbers—but a tool to build apps, or create artwork, or test hypotheses. It"s not as hard for them to transform their thought processes as it is for older students. Breaking down problems into bite-sized chunks and using code to solve them becomes normal. Giving more children this training could increase the number of people interested in the field and help fill the jobs gap, Cortina said. Students also benefit from learning something about coding before they get to college, where introductory computer-science classes are packed to the brim, which can drive the less-experienced or-determined students away. The Flatiron School, where people pay to learn programming, started as one of the many coding bootcamps that"s become popular for adults looking for a career change. The high-schoolers get the same curriculum, but "we try to gear lessons toward things they"re interested in," said Victoria Friedman, an instructor. For instance, one of the apps the students are developing suggests movies based on your mood. The students in the Flatiron class probably won"t drop out of high school and build the next Facebook. Programming languages have a quick turnover, so the "Ruby on Rails" language they learned may not even be relevant by the time they enter the job market. But the skills they learn—how to think logically through a problem and organize the results—apply to any coding language, said Deborah Seehorn, an education consultant for the state of North Carolina. Indeed, the Flatiron students might not go into IT at all. But creating a future army of coders is not the sole purpose of the classes. These kids are going to be surrounded by computers—in their pockets, in their offices, in their homes—for the rest of their lives. The younger they learn how computers think, how to coax the machine into producing what they want—the earlier they learn that they have the power to do that—the better.