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单选题下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断:如果该句提的是正确信息,请选择A:如果该句提的是错误信息,请选择B:如果该句的信息文中没有提及,请选择C。 Magaplane (巨型飞机) The Boeing Corp. and Europe's Airbus consortium (财团) are preparing to offer bigger airplanes to the world's airlines. Now that talks on a joint project have broken down, Boeing is pushing a stretched (拓展的) version of 747, and Airbus is designing an all-new aircraft, known as the A3XX. Seating 550 passengers in the basic model, and 650 in a stretched version, the 1. 2 million pound A3XX will not only be the largest airplane in the world, but it will also be one of the most advanceD. The outer wings and the horizontal stabilizer (as big as a smaller jet's wing) will be made of carbon-fiber composite materials, and will be the largest? such structures on any aircraft except the B-2 stealth bomber (隐形轰炸机). Metal skins will be welded (焊接) together with lasers, removing thousands of fasteners. When a strong wind strikes the A3XX's 260-foot wing, movable control surfaces will prevent it from flexing (扭曲) like a giant spring. This will make the ride smoother and will save weight by reducing the load on the wing spars (翼梁). A flexible-skinned flap (副翼) will subtly change the wing's curvature (曲面) to match the airplane's changing weight as it burns fuel on each journey. The A3XX will carry up to 1,600 meals, filling more than 100 food and beverage (饮料) carts. To make more room for passengers, Airbus plans to put the carts in the lower hold; automatic conveyors and elevators will deliver them to the two passenger decks. Airlines have asked Airbus to look at extra features ranging from lower-deck sleeper cabins to a children's playroom. Airbus expects to offer the A3XX to airlines in 1998, and deliver the first aircraft in 2003.
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单选题{{B}}第三篇{{/B}} The Greatest Show on Earth The Olympic Games (奥林匹克运动会) are the greatest festival of sport in the world. Every four years, a hundred or more countries send their best sportsmen to compete (竞赛) for the highest honors in sport. As many as 6,000 people take part in over 20 sports. For the winners, there are gold medals(奖牌) and glory. But there is honor, too, for all who compete, win or lose. That is in spirit of the Olympics-to take part is what matters. The Olympic Games always start in a bright color and action. The teams of all the nations parade in the opening ceremony(仪式) and march round the track. The custom is for the Greek team to march in first. For it was in Greece that the Olympics began. The team of the country where the Games are being held-the host country-marches in last. The runner with the Olympic torch (火炬) then enters the stadium(体育场) and lights the flame. A sportsman from the host country takes the Olympic oath (誓言) on behalf of all the competitors(竞赛者). The judges and officials also take an oath. After the sportsmen march out of the stadium the host country puts on a wonderful display. The competitions begin the next day. There are usually more than twenty sports in the Games. The rule is that there must be at least fifteen. The main events are in track and field (田径) , but it is a few days before these sports start. Each day the competitors take part in a different sport-riding, shooting, swimming, and cross-country running. Points are gained for each event. Medals are awarded (颁发) for the individual winners and for national teams. More and more women are taking part in the games. They first competed in 1900, in tennis and golf, which are no longer held in the Oiympics. Women's swimming events were introduced in 1912. But it was not until 1928 that there were any track and field events for women. Now, they compete in all but half a dozen of the sports. In horse riding, shooting, and boat racing, they may compete in the same events as the men.
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单选题阅读下面这篇短文,短文后列出了7个句子,请根据短文的内容对每个句子作出判断。如果该句提供的是正确信息,请选择A项;如果该句提供的是错误信息,请选择B项;如果该句的信息文章中没有提及,请选择C项。 {{B}}Magaplane (巨型飞机){{/B}} The Boeing Corp. and Europe's Airbus consortium (财团) are preparing to offer bigger airplanes to the world's airlines. Now that talks on a joint project have broken down, Boeing is pushing a stretched (拓展的) version of 747, and Airbus is designing an all-new aircraft, known as the A3XX. Seating 550 passengers in the basic model, and 650 in a stretched version, the 1.2 million pound A3XX will not only be the largest airplane in the world, but it will also be one of the most advanced. The outer wings and the horizontal stabilizer (as big as a smaller jet's wing) will be made of carbon-fiber composite materials, and will be the largest such structures on any aircraft except the B-2 stealth bomber (隐形轰炸机). Metal skins will be welded (焊接) together with lasers, removing thousands of fasteners. When a strong wind strikes the A3XX's 260-foot wing, movable control surfaces will prevent it from flexing (扭曲) like a giant spring. This will make the ride smoother and will save weight by reducing the load on the wing spars (翼梁). A flexible-skinned flap (副翼) will subtly change the wing's curvature (曲面) to match the airplane's changing weight as it burns fuel on each journey. The A3XX will carry up to 1,600 meals, filling more than 100 food and beverage (饮料) carts. To make more room for passengers, Airbus plans to put the carts in the lower hold; automatic conveyors and elevators will deliver them to the two passenger decks. Airlines have asked Airbus to look at extra features ranging from lower-deck sleeper cabins to a children's playroom.
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单选题Many of Europe"s airports are heavily congested .
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单选题 下面有3篇短文,每篇短文后有5道题,每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题,从4个选项中选择1个最佳答案。{{B}}第一篇{{/B}} {{B}} Escaping from the Earth{{/B}} The Earth has a force that pulls things toward itself. We call this force gravity(地心引力). This is something we live with all the time, and we take it for granted and hardly ever think about it. But it is a most important factor in rocket operation and must be overcome if we are to get anywhere in space, or off the ground at all. Take the throwing of a hall as an example. The harder the ball is thrown, the faster and higher it will go. What is the secret? Its speed. If we could throw the ball hard enough it would go up and up forever and never come down. The speed at which it would have to be thrown to do this is known as escape speed. Of course, we cannot throw a ball hard enough because the speed required to escape completely from the Earth's gravity is seven miles per second, or over twenty-five thousand miles per hour. Once escape speed has been reached by a spacecraft(宇宙飞船), no further power is needed. A rocket aimed at the Moon, for instance, will "coast"(滑行) the rest of the way be cause the Earth's gravity cannot then pull it back, and there is no air resistance(阻力) in space to slow it down. This "coasting" is known as "free fall". That does not mean the rocket is falling down towards the Earth but that it is traveling freely in space without the aid of power, like a bicycle coasting downhill. Free fall is an important feature of space travel: it would be impossible to carry enough fuel to provide powered flight all the time.
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单选题"It's been a Uprivilege/U to meet you, sir," the young man said to the artist as he was leaving.
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单选题The number of the United States citizens who are {{U}}eligible{{/U}} to vote continues to increase.
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单选题The chairman {{U}}proposed{{/U}} that we should stop the meeting.
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单选题Against the advice of his accountants, Henry Ford {{U}}regularly{{/U}} reduced the price of his early automobiles.
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单选题{{B}}第二篇{{/B}} {{B}} Walking Robot Carries a Person{{/B}} The first walking robot capable of carrying a person unveiled on Friday in Tokyo, Japan. Its creators at Waseda University in Tokyo and the Japanese robotics company Tmsuk hope their two-legged creation will one day enable wheel-chair users to climb up and down the stairs and assist the movement of heavy goods over uneven ground. The battery-powered robot, code-named WL-16, is essentially an aluminium chair mounted on two sets of telescopic poles. The poles are bolted to flat plates which act as feet. WL-16 uses 12 actuators (传动装置) to move forwards, backwards and sideways while carrying an adult weighing up to 60 kilograms (130 pounds). The robot can adjust its body and walk smoothly even if the person it is carrying shifts in the chair. At present it can only step up or down a few millimeters, but the team plans to make it capable of dealing with a normal flight of stairs. "I believe this bipedal (两足的) robot, which I prefer to call a two-legged walking chair rather than a wheel-chair, will eventually enable people to go up and down the stairs," said Atsuo Takanishi, from Waseda University. "We have had strong robots for some time but usually they have been manipulators, they have not been geared to carrying people around," says Ron Arkin, at the Georgia Institute of Technology and robotics consultant for Sony. "But I don't know how safe and how user-friendly WL-16 is." Tmsuk chief executive Yoichi Takamoto argues that bipedal or multi-legged robots will be more useful than so-called "caterpillar (毛毛虫) models" for moving over uneven ground. WL-16's normal walking step measures 30 centimetres, but it can stretch its legs to 136 cm apart. The prototype (原型) is currently radio-controlled, but the research team plans to equip it with a stick-like controller for the user in future. Takanishi said it will take "at least two years" to develop the WL-16 prototype into a working model. Smaller, ground-hugging (紧贴地面行走的) robots have been developed to pass across tricky ground. One maggot-like (像蛆一样的) device uses a magnetic fluid to pulse its way along, while another snake-like robot uses smart software to devise new movement strategies if the landscape affects any one part. One ball-shaped robot even uses a leap-and-bounce approach to travel over rough territory. But none of these are big or strong enough to carry a person too.
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单选题The dog saw his Ureflection/U in the pool of water.
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单选题阅读下面这篇短文,短文后列出7个句子,请根据短文的内容对每个句子做出判断。如果该句提供的是正确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文章中没有提及,请选择C。 In 1993, New York State ordered stores to charge a deposit on beverage(饮料) containers. Within a year, consumers had returned millions of aluminum cans and glass and plastic bottles. Plenty of companies were eager to accept the aluminum and glass as raw materials for new products, but because few could figure out what to do with the plastic, much of it wound up buried in landfills(垃圾填埋场). The problem was not limited to New York. Unfortunately, there were too few uses for second-hand plastic. Today, one out of five plastic soda bottles is recycled(回收利用) in the United States. The reason for the change is that now there are dozens of companies across the country buying discarded plastic soda bottles and turning them into fence posts, paint brushes, etc. As the New York experience shows, recycling involves more than simply separating valuable materials from the rest of the rubbish. A discard remains a discard until somebody figures out how to give it a second fife—and until economic arrangements exist to give that second life value. Without adequate markets to absorb materials collected for recycling, throwaways actually depress prices for used materials. Shrinking landfill space, and rising costs for burying and burning rubbish are forcing local governments to look more closely at recycling. In many areas, the East Coast especially, recycling is already the least expensive waste-man-agement option. For every ton of waste recycled, a city avoids paying for its disposal, which, in parts of New York, amounts to savings of more than $100 per ton. Recycling also stimulates the local economy by creating jobs and trims the pollution control and energy costs of industries that make recycled products by giving them a more refined raw material.
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单选题 Symbolic Process The process by means of which human beings arbitrarily make certain things stand for other things many be called the symbolic process. Everywhere we turn, we see the symbolic process at work. There are {{U}} {{U}} 1 {{/U}} {{/U}}things men do or want to do, possess or want to possess, that have not a symbolic value. Almost all fashionable clothes are {{U}} {{U}} 2 {{/U}} {{/U}}symbolic, so is food. We {{U}} {{U}} 3 {{/U}} {{/U}}our furniture to serve {{U}} {{U}} 4 {{/U}} {{/U}}visible symbols of our taste, wealth, and social position. We often choose our houses {{U}} {{U}} 5 {{/U}} {{/U}}the basis of a feeling that it "looks well" to have a "good address." We trade perfectly good cars in for {{U}} {{U}} 6 {{/U}} {{/U}}models not always to get better transportation, but to give {{U}} {{U}} 7 {{/U}} {{/U}}to the community that we can {{U}} {{U}} 8 {{/U}} {{/U}}it. Such complicated and apparently {{U}} {{U}} 9 {{/U}} {{/U}}behavior leads philosophers to ask over and over again, "why can't human beings {{U}} {{U}} 10 {{/U}} {{/U}}simply and naturally." Often the complexity of human life makes us look enviously at the relative {{U}} {{U}} 11 {{/U}} {{/U}}of such live as dogs and cats. Simply, the fact that symbolic process makes complexity possible is no {{U}} {{U}} 12 {{/U}} {{/U}}for wanting to {{U}} {{U}} 13 {{/U}} {{/U}}to a cat and to a cat-and-dog existence. A better solution is to understand the symbolic process {{U}} {{U}} 14 {{/U}} {{/U}}instead of being its slaves we become, to some degree at least, its {{U}} {{U}} 15 {{/U}} {{/U}}
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单选题{{B}}第二篇{{/B}} {{B}} Superconducting Ceramic (陶瓷){{/B}} An underground revolution begins this winter. With the flip (轻击) of a switch, 30,000 homes in one part of Detroit will soon become the first in the country to receive electricity transmitted by ice-cold high-performance cables. Other American cities are expected to follow Detroit's example in the years ahead, which could conserve enormous amounts of power. The new electrical cables at the Frisbie power station in Detroit are revolutionary because they are made of superconductors. A superconductor is a material that transmits electricity with little or no resistance. Resistance is the degree to which a substance resists electric current. All common electrical conductors have a certain amount of electrical resistance. They convert at least some of the electrical energy passing through them into waste heat. Superconductors don't. No one understands how superconductivity works. It just does. Making superconductors isn't easy. A superconducting material has to be cooled to an extremely low temperature to lose its resistance. The first superconductors, made more than 50 years ago, had to be cooled to -263 degrees Celsius before they lost their resistance. Newer superconducting materials lose their resistance at -143 degrees Celsius. The superconductors cable installed at the Frisbie station is made of a ceramic material that contains copper, oxygen, bismuth (铋), strontium (锶), and calcium (钙). A ceramic is a hard, strong compound made from clay or minerals. The superconducting ceramic has been fashioned into a tape that is wrapped lengthwise around a long tube filled with liquid nitrogen. Liquid nitrogen is supercold and lowers the temperature of the ceramic tape to the point where it conveys electricity with zero resistance. The United States loses an enormous amount of electricity each year to resistance. Because cooled superconductors have no resistance, they waste much less power. Other cities are watching the Frisbie experiment in the hope that they might switch to superconducting cable and conserve power, too.
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单选题I can't {{U}}put up with{{/U}} my neighbor's noise any longer, it's driving me mad. A. tolerate B. generate C. reduce D. measure
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单选题The attack on Fort Sumter near Charleston provoked a sharp response froze the North, which led to the American Civil War.A. demandedB. elicitedC. extractedD. defied
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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}} Transportation use a to Be Much Slower than It Is Now{{/B}} For many years in tile desert, camels used to be the only form of transportation. Before the {{U}}(51) {{/U}}of modern trains, camel trains used to carry al! the goods for trading between Central Africa and Europe. Traders sometimes{{U}} (52) {{/U}}to put together camel trains with 10,000 to 15,000 animals. Each animal often carried{{U}} (53) {{/U}}400 pounds and it could travel twenty miles a day. This form of transportation was so important{{U}} (54) {{/U}}camels were called the "ship of the desert". Now modern trains travel across the desert in a very{{U}} (55) {{/U}}time. One engine can pull as much weight as 135,000{{U}} (56) {{/U}},in addition, trains use special cars for their load. Refrigerator cars carry food; boxcars carry heavy goods; stock cars carry animals; and tank cars carry oil. {{U}} (57) {{/U}}travel has changed, too. The earliest planes were biplanes, with two sets of wings. The top speed of this plane was 60 miles per hour. The pilots used to sit or lie on the wings in the open air. The plane{{U}} (58) {{/U}}sometimes stopped in the middle of a trip. It used to be{{U}} (59) {{/U}} to fly in bad weather. In snow or in rain, the wings frequently became icy.{{U}} (60) {{/U}}the plane might go down. Mechanical improvements during the First World War changed airplanes. Monoplanes took the place of biplanes. Pilots flew inside of covered cabins. Still, even these planes were small and expensive. Only{{U}} (61) {{/U}}people were able to travel in airplanes. Now modern jets make air travel possible for all people.{{U}} (62) {{/U}}place in the world is more than 1 hours away by jet. Further improvements have{{U}} (63) {{/U}}the cost of flying, and they have made air travel much safer than it used to be. A modern 707 can carry 170 people and can fly at 600 miles per hour. People{{U}} (64) {{/U}}used to eat, sleep, or watch movies on airplanes.{{U}} (65) {{/U}} these things are a normal part of air travel!
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单选题The little boy employed an unexpected method to gel the result.A. adaptedB. adoptedC. assignedD. appointed
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单选题Technology Transfer in Germany When it comes to translating basic research into industrial success, few nations can match Germany. Since the 1940s, the nation's vast industrial base has been fed with a constant stream of new ideas and expertise from science. And though German prosperity (繁荣) has faltered (衰退) over the past decade because of the huge cost of unifying east and west as well as the global economic decline, it still has an enviable record for turning ideas into profit. Much of the reason for that success is the Fraunhofer Society, a network of research institutes that exists solely to solve industrial problems and create sought-after technologies. But today the Fraunhofer institutes have competition. Universities are taking an ever larger role in technology transfer, and technology parks are springing up all over. These efforts are being complemented by the federal programmes for pumping money into start-up companies. Such a strategy may sound like a recipe for economic success, but it is not without its critics. These people worry that favouring applied research will mean neglecting basic science, eventually starving industry of fresh ideas. If every scientist starts thinking like an entrepreneur (企业家), the argument goes, then the traditional principles of university research being curiosity-driven, free and widely available will suffer. Others claim that many of the programmes to promote technology transfer are a waste of money because half the small businesses that are promoted are bound to go bankrupt within a few years. While this debate continues, new ideas flow at a steady rate from Germany's research networks, which bear famous names such as Helmholtz, Max Planck and Leibniz. Yet it is the fourth network, the Fraunhofer Society, that plays the greatest role in technology transfer. Founded in 1949, the Fraunhofer Society is now Europe's largest organisation for applied technology, and has 59 institutes employing 12,000 people. It continues to grow. Last year, it swallowed up the Heindch Hertz Institute for Communication Technology in Berlin. Today, there are even Fraunhofers in the US and Asia.
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单选题Cement was seldom used in buildings of the Middle Ages. A. slightly B. rarely C. originally D. occasionally
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