单选题A municipal management plan for storm-water runoff is mandated by the Clean Water Act. Early this year, Urban Stormwater Management in the United States, a report commissioned by the Environmental Protection Agency (EPA), recommended a number of ways to manage runoff, including using structural devices, like the kind AbTech produces. Rink is hoping that his merchandise appeals to budget-strapped municipalities. "Compared with building new storm-water treatment plants or upgrading already existing facilities to handle runoff pollution, which would cost in the millions of dollars, our products are very affordable," he says. The federal stimulus bill could make them even more so. AbTech products areA. structural devices.B. the best solution to run off.C. appealing to budget-strapped municipalities.D. costly.

单选题The role of women in Britain has changed a lot in this century, (51) in the last twenty years. The main change has been (52) giving women greater equality with men. Up to the beginning of this century, women seem to have had (53) rights. They could not vote and were kept at home. (54) , as far as we know, most women were happy with this situation. Today, women in Britain certainly (55) more fights than they used to. They were (56) the vote in 1919. In 1970 a law was passed to give them an equal (57) of wealth in the case of divorce, (58) the Equal Pay Act gave them the right of equal pay with men for work of equal value in the same year. Yet (59) these changes, there are still great difference in status between men and women. Many employers seem to (60) the Equal Pay Act, and the average working women is (61) to earn only about half that a man earns for the same job. (62) a survey, at present, only one-third of the country's workers are (63) women. This small percentage is partly (64) a shortage of nurseries. If there were (65) nurseries, twice as many women might well go out to work.

单选题Over the past two decades gee—engineering began to include other ways of fixing climate-including new spins on the Pinatubo effect. Using sulfur dioxide(二氧化硫) or other materials, they aim to reflect sunlight back into outer space. One would boost a series of mirrors into orbit, shading Earth from sunlight, but at a cost that would likely bankrupt the planet. In the 1990s, the controversial inventor of the hydrogen bomb, Edward Teller, proposed floating reflective particles of metal in the atmosphere, adding a Dr. Strangelove air to the gee-engineering field. Various kinds of materials are used in gee-engineering toA. bankrupt the earth.B. reflect sunlight back into space.C. boost mirrors into orbit.D. make hydrogen bombs.

单选题High pay may enhance productivity.A. confirmB. improveC. determineD. supplement

单选题The novel depicts the history of the nation.

单选题Ambition is a {{U}}characteristic{{/U}} of all successful businessmen.

单选题No civilized country should deem theft lawful .

单选题Tech Addiction" Harms Learning" The study of 267 pupils aged 11 to 18 found 63% felt addicted to the internet-Techno Addicts: Young Person Addiction to Technology-was carried out by researchers at Cranfield School of Management, Northampton Business School and academic consultancy AJM Associates. Researchers used a written questionnaire to examine the nature and the volume of mobile phone calls and text messaging as well as computer use including e-mail, instant messaging and accessing social networking sites. They found 62% first used or owned a computer before the age of eight, 80% first used the internet between the ages of five and 10,58% first used a mobile phone between the ages of eight and 10 and 58% have had access to a social networking sites between the ages of eleven and 13. Over 63% felt addicted to the internet. Over 30% reported spending between one to two hours a day using the internet and 26% said they spent up to six or more hours a day. On average, pupils said they spent between one and two hours on social networking sites each day. Over one in five(20.2%) said they left the phone on in lessons-which is usually forbidden by schools. Over a third(39%)admitted that text shortcuts damaged the quality of their written English, particularly when it came to spelling. And 84% openly admitted copying chunks of information from the internet into their homework or projects on a number of occasions. Dr Nada Kakabadse from Northampton Business School said modern technology, such as mobile phones and handheld computer games, was having an impact on pupils' attention levels. "They are hiding these things under the desks so their concentration cannot be equally divided, they are not focusing on what's going on in class. " Dr Kakabadse said pupils were also getting into a bad habit of plagiarism. "For their homework, instead of reading the book, they go on the internet and lift it. " She also raised concerns about the text-messaging abbreviations to which young people had grown accustomed. They have invented a new language. This kind of abbreviation they unconsciously bring into their assignments.

单选题 阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从 4个选项中选择1个最佳答案。 {{B}}Unpopular Subjects?{{/B}} Is there a place in today's society for the study of useless subjects in our universities? Just over 100 years ago Fitzgerald argued in a well-written letter{{U}} (51) {{/U}} Nature that "Universities must be allowed to study useless subjects--{{U}} (52) {{/U}} they don't, who will?" He went on to use the{{U}} (53) {{/U}}of Maxwell's electrodynamics (电动力学) as one case where a "useless subject" has been transformed to a useful subject. Nowadays this argument is again very much{{U}} (54) {{/U}}in many universities. Indeed one suspects that it is one of those arguments that must be{{U}} (55) {{/U}} anew (重新) by each generation. But now there is an added twist (歪曲)--subjects must not only be useful, they must also be{{U}} (56) {{/U}}enough that students will flock (蜂拥) to do them, and even flock to pay to do them. As universities become commercial operations, the pressure to{{U}} (57) {{/U}} subjects or departments that are less popular will become stronger and stronger. Perhaps this is most strongly{{U}} (58) {{/U}}at the moment by physics. There has been much{{U}} (59) {{/U}}in the press of universities that are closing down physics departments and incorporate them with mathematics or engineering departments. Many scientists think otherwise. They see physics as a{{U}} (60) {{/U}}science, which must be kept alive if only to{{U}} (61) {{/U}}a base for other sciences and engineering. It is of their great personal concern that physics teaching and research is under{{U}} (62) {{/U}}in many universities. How can it be preserved in the rush towards commercial competition? A major turnaround (转变) in student popularity may have to{{U}} (63) {{/U}}until the industrial world discovers that it needs physicists and starts paying them well. Physics is now not only unpopular; it is also "hard". We can de more about the latter by{{U}} (64) {{/U}}teaching in our schools and universities. We can also{{U}} (65) {{/U}} cooperative arrangements to ensure that physicists keep their research and teaching up to date.

单选题After fossil fuels are used up, global warming will continue for ________

单选题Brilliantly colored flowers attract insects.

单选题Smoking will be banned in all public places here. A．forbidden B．allowed C．permitted D．promoted

单选题The city has decided to w Udo away with/U all the old buildings in its center.

单选题Walk a Quarter-Mile or Die If you can walk a quarter-mile, odds (可能性) are you have at least six years of life left in you, scientists say. And the faster you can (1) it, the longer you might live. While walking is no guarantee of (2) or longevity (长寿), a new study found that the ability of elderly people to do the quarter-mile was an "important determinant (决定因素)" in whether or not they'd be (3) six years later and how much illness and disability they would endure. "The (4) to complete this walk was a powerful predictor of health outcomes," said study leader Anne Newman of the University of Pittsburgh School of Medicine. "In fact, we (5) that the people who could not complete the walk were (6) an extremely high risk of later disability and death. " Newman and colleagues recruited nearly 2,700 white and African-American men and women aged 70 to 79 to (7) the walk. All the participants were screened and determined to be in relatively (8) health, and they had all said they had previously walked that far with no (9) . Only 86 percent of them finished, (10) . The scientists then monitored the health and mortality of all (11) for the next six years. "There was a big gap in health outcomes (12) people who could complete the longer walk and people who could not, with the latter being at an extremely high (13) of becoming disabled or dying," Newman said. "What was really surprising is that these people were not (14) of how weak they actually were. " Finishing times were found to be crucial, too. Those who completed the walk but were among the slowest 25 percent (15) three times greater risk of death than the speedier folks.

单选题When he was the director of the company, his first Uaccomplishment/U was to improve the working conditions.

单选题Robots May Allow Surgery in Space Small robots designed by University of Nebraska researchers may allow doctors on Earth to help perform surgery on patients in space. The tiny, wheeled robots, 31 are about 3 inches tall and as wide as a lipstick case, can be slipped into small incisions (切口) and computer-controlled by surgeons in different locations. Some robots are 32 with cameras and lights and can send images back to surgeons and others have surgical 33 attached that can be controlled remotely. "We think this is going to 34 open surgery," Dr. Dmitry Oleynikov said at a news conference. Oleynikov is a specialist 35 computer-assisted surgery at the University of Nebraska Medical Center in Omaha. Officials hope that NASA will teach 36 to use the robots soon enough so that surgeries could one day be performed in space. On earth, the surgeons could 37 the robots themselves from other locations. For example, the robots could 38 surgeons in other places to work on injured soldiers on the front line. Researchers plan to seek federal regulatory (联邦管理局的) 39 early next year. Tests on animals have been successful, and tests on humans in England will begin very soon. The camera-carrying robots can provide 40 of affected areas and the ones with surgical tools will be able to maneuver (操控) inside the body in ways surgeons" hands can"t. The views from the camera-carrying robots are better than the naked eye, because they send back color images that are magnified (放大). Because several robots can be 41 through one incision, they could reduce the 42 and size of cuts needed for surgery, which would 43 recovery time. This is particularly helpful to those patients who have been debilitated (使虚弱) by long illness. Eventually, Oleynikov said, the tiny robots may enable surgeons to 44 without ever placing their hands in patients" bodies. "That"s the goal;" Oleynikov said. "It"s getting easier and easier. We can do even more with these 45 "

单选题The agreement was terminated immediately.

单选题阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 {{B}}Standard English{{/B}} Standard English is the variety of English which is usually used in print and which is normally taught in schools and to non-native speakers leaning the language. It is also the variety which is normally spoken by educated people and used in news broadcasts and other{{U}} (51) {{/U}}situations. The difference between standard and nonstandard, it should be noted, has{{U}} (52) {{/U}}in principle to do with differences between formal and colloquial{{U}} (53) {{/U}}; standard English has colloquial as well as formal variants. Historically, the standard variety of English is based on the London{{U}} (54) {{/U}}of English that developed after the Norman Conquest resulted in the removal of the Court from Winchester to London. This dialect became the one{{U}} (55) {{/U}}by the. educated, and it was developed and promoted{{U}} (56) {{/U}}a model, or norm, for wider and wider segments of society. It was also the{{U}} (57) {{/U}}that was carried overseas, but not one unaffected by such export. Today, standard English is arranged to the extent that the grammar and vocabulary of English are{{U}} (58) {{/U}}the same everywhere in the world where English is used;{{U}} (59) {{/U}}among local standards is really quite minor,{{U}} (60) {{/U}}the Singapore, South Africa, and Irish varieties are really very{{U}} (61) {{/U}}different from one another so far as grammar and vocabulary are concerned. Indeed, Standard English is so powerful that it exerts a tremendous{{U}} (62) {{/U}}on all local varieties, to the extent that many of long-established dialects of England have{{U}} (63) {{/U}}much of their vigor (活力) and there is considerable pressure on them to be{{U}} (66) {{/U}}. This latter situation is not unique{{U}} (65) {{/U}}English: it is also true in other countries where processes of standardization are underway. But it sometimes creates problems for speakers who try to strike some kind of compromise between local norms and national, even supranational (跨国的) ones.

单选题Since 1992, cancer death rates among black Americans

单选题 阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从 4个选项中选择1个最佳答案。 {{B}}Dark Forces Dominate Universe{{/B}} The earth, moon, sun and all visible stars in the sky make up less than one percent of the universe. Almost all the rest is dark matter and dark energy, unknown forces that {{U}}(51) {{/U}}astronomers. Observations in recent years have changed the basic{{U}} (52) {{/U}}of how the universe evolved and have indicated how little is known about the major forces and substances that{{U}} (53) {{/U}}our world. Astronomers now know that luminous (发光的) matter -- stars, planets and hot gas -- accounts{{U}} (54) {{/U}}only about 0.4 percent of the universe. Non-luminous components, such as black holes and intergalactic (星系间的) gas,{{U}} (55) {{/U}}up 3.6 percent. The rest is either dark matter, about 23 percent, or dark energy, about 73 percent. Dark matter, sometimes{{U}} (56) {{/U}}"cold dark matter," has been known for some time. Only recently have researchers come to understand the key role it {{U}}(57) {{/U}}in the formation of stars, planets and even people. "We{{U}} (58) {{/U}}our very existence to dark matter," said physicist Paul Steinhardt and a co-author of a review on dark matter which{{U}} (59) {{/U}}not long ago in the journal Science. "Dark matter dominated the structure{{U}} (68) {{/U}}in the early universe," Steinhardt said. "For the first few billion years dark matter contained most of the mass of the universe. You can think of ordinary matter{{U}} (61) {{/U}}a froth (泡沫) of an ocean of dark matter. The dark matter clumps (结成块) and the ordinary matter falls into it. That {{U}}(62) {{/U}}to the formation of the stars and galaxies (星系)." Without dark matter, "there would be virtually no structures in the universe." The nature of dark matter is{{U}} (63) {{/U}}. It cannot be seen or detected directly. Astronomers know it is there because of its{{U}} (64) {{/U}}on celestial (天体的) objects that can be seen and measured. But the most dominating force of all in the universe is called dark energy, a recently {{U}}(65) {{/U}}power that astronomers say is causing the galaxies in the universe to separate at a faster and faster speed.