单选题22. The invention of telephone means ______ people could send messages a long way at great speed.

单选题 ______ that you win the prize

单选题26. He ______ abroad but he was suddenly taken ill.

单选题. One country that is certain of the effect of films on tourism is Australia. The Tourist Office of Queensland say that Crocodile Dundee, 21 Paul Hogan, made Australia the popular 22 it is today. In the three years after Crocodile Dundee was 23 , visitor numbers doubled. 24 what makes people want to visit the place where a movie was filmed? In many cases the reason is 25 the film makes audiences 26 of the existence of a place. 27 the James Bond movie The Man with the Golden Gun was filmed in Phuket, Thailand, most Westerners had never heard of it. Today it is a major destination. Leonardo DiCaprio's film The Beach has 28 tourism in another part of Thailand. The film is about the discovery of the most idyllic beach in the world. As a result the Thai authorities are 29 a tourist boom in the film's 30 , Koh Phi Phi. Some people are influenced by a movie's 31 as much as its location, especially if it is a romance. Four Weddings and a Funeral has 32 that "The Crown" hotel in Amersham has been busy ever 33 the movie was first shown. In fact the bedroom where the 34 played by Hugh Grant and Andie McDowell spend their first night together is 35 for years ahead. "We've 36 the number of marriage proposals that have been made there," say the hotel 37 . It is not just the tourist boards who are happy 38 the influence of films on a destination. Residents of a rather run down area of London have seen house prices almost double 39 Julia Roberts' romance with Hugh Grant in Notting Hill. Film stars, such as Madonna, who had previously thought of Notting Hill as a good place for a party, have now bought 40 there. Perhaps they hope to revive their romances.21.

单选题. Predictions of large populations of robots in industry have yet to come true. For a decade or more, manufacturers of big robots have explained how their machines can make industry more competitive and productive. The market for 21 robots is now oversupplied, and the driving force of the robotics (机器人技术) revolution is 22 to be with makers of machines that handle a few kilos at most. "Heavy-robot manufacturers are in some difficulty 23 finding customers. They are offering big 24 just to get in the door. There has been a 25 growth everywhere in the numbers of robots, so we have to admit we are either deceiving 26 or that the market is slowly growing," said John Reekie, Chairman of Colne Robotics. "The following things must happen 27 the robotics revolution to occur. We must achieve widespread robot literacy (文化), 28 there has been a computer literacy program, there must be a robot literacy campaign. We must also 29 not just a cut in, but a collapse of robot prices. 30 , some kind of artificial intelligence needs to be 31 ." Colne makes educational robots and machine tools. It is small 32 with companies like ASEA or Fujitsu Fanuc. But Colne with others and departments in universities such as Surrey, Manchester, and Durham possess an advantage 33 the giants. The big companies sell very expensive 34 to businesses with expert knowledge in automation. The 35 companies make robots for teaching people, and now they have realized there is a need for small, 36 robots that they can meet. The little companies either bring their educational machines 37 an industrial standard or design from scratch (从头做起). One technique that they all adopt is to choose 38 components where possible. The major cost of making 39 their models is the electronics, which will fall in price. There is 40 scope for reductions in mechanical costs. The use of standard parts, which are easily replaced, should give these robots a mechanical life of something in the order of five years.21.

单选题7. Their keen senses of hearing and smell have made some types of dogs ______ in hunting and tracking and as security guards.

单选题27. If there are a lot of interesting people and good food, we won't object to ______ to the welcome party.

单选题10. Early philosophers believed that the mind was divided into three faculties ______ as feeling, intellect, and will.

单选题1. The man was prejudiced ______ all people of color.

单选题 ______ break up rock

单选题25. It is easy to think that a witness who saw a crime ______ will be able to give all the answer.

单选题. New Findings on Memory Could Enhance Learning 关于记忆的新发现有助于学习 New research in monkeys may provide a clue about how the brain manages vast amounts of information and remembers what it needs. Researchers at Wake Forest University Baptist Medical Center have identified brain cells that streamline and simplify sensory information, markedly reducing the brain's workload. "When you need to remember people you've just met at a meeting, the brain probably doesn't memorize each person's facial features to help you identify them later," says Sam Deadwyler, Ph.D., a Wake Forest neuroscientist and study investigator. "Instead, it records vital information, such as their hairstyle, height, or age, all classifications that we are familiar with from meeting people in general. Our research suggests how the brain might do this, which could lead to ways to improve memory in humans." The researchers found that when monkeys were taught to remember computer clip art pictures, their brains reduced the level of detail by sorting the pictures into categories for recall, such as images that contained "people," "buildings," "flowers," and "animals." The categorizing cells were found in the hippocampus, an area of the brain that processes sensory information into memory. It is essential for remembering all things including facts, places, or people, and is severely affected in Alzheimer's disease. "One of the intriguing questions is how information is processed by the hippocampus to retain and retrieve memories," said Robert Hampson, Ph.D., co-investigator. "The identification of these cells in monkeys provides evidence that information can be remembered more effectively by separating it into categories. It is likely that humans use a similar process." The researchers measured individual cell activity in the hippocampus while the monkeys performed a video-game-like memory task. Each monkey was shown one clip art picture, and after a delay of one to 30 seconds, picked the original out of two to six different images to get a juice reward. By recording cell activity during hundreds of these trials in which the pictures were all different, the researchers noticed that certain cells were more active when the pictures contained similar features, such as images of people but not other objects. They found that different cells coded images that fit different categories. "Unlike other cells in the brain that are devoted to recording simply an object's shape, color or brightness, the category cells grouped images based on common features, a strategy to improve memory," said Terry Stanford, a study investigator. "For example, the same cell responded to both tulips and daisies because they are both flowers." The researchers found, however, that different monkeys classified the same pictures differently. For example, with a picture of a man in a blue coat, some monkeys placed the image in the "people" category, while others appeared to encode the image based on features that were not related to people such as "blue objects" or "types of coats." While such categorization is a highly efficient memory process, it may also have a downside, said the researchers. "The over generalization of a category could result in errors," said Deadwyler. "For example, when the trials included more than one picture with people in it, instead of different images, the monkeys often confused the image with a picture of other people." The researchers said that learning more about how the brain remembers could have for reaching benefits. "If we can understand in advance how the brain works when decisions are made, we can predict when the brain will make a mistake, and correct it," said Tim Pons, Ph.D., an expert in monkey research and team member. "This finding about how large amounts of information are processed by the brain will help us ultimately achieve that goal."16. According to Sam Deadwyler, a neuroscientist, when we meet people we need to remember, the brain probably memorizes ______.

单选题 After yuppies and dinkies

单选题. Depending on whether you believe in principle or the art of the possible, the United Nations' new proposal for the future of Western Sahara is either a betrayal or a dogged 21 at a settlement. It suggests that for the next four years Western Sahara should be a part of Morocco 22 will 23 the Moroccan flag and 24 the Moroccan constitution, hut at the same time it will be "autonomous". After four years there may—but only may—be a referendum to decide whether it stays Moroccan or becomes a separate state. Morocco invaded this corner of north-west Africa in 1975 when the old colonial power, Spain, was preparing to 25 out. The International Court of Justice ruled the Moroccan occupation 26 , and a nasty little war ensued between Morocco and an independence movement, the Polisario Front. They signed a 27 in 1991, and agreed to a vote on the future of the territory, 28 by the UN. Instead of grinding 29 an appeals procedure, or declaring Morocco to be in 30 , the UN now appears to have decided to abandon the whole exercise. The result may be virtually to hand the country 31 to Morocco. The new plan, drawn up by James Baker, a former American secretary of state, 32 that the agreed list of voters should elect an executive that will. 33 the country's internal affairs for the next four years. 34 , this executive will be responsible to an assembly elected by all adults now living in the territory, most of 35 are pro-Moroccan. After four years the assembly will 36 a new executive. Morocco will also appoint the judges and be responsible for law and order 37 the transition. Polisario has, unsurprisingly, rejected the proposal, but its options are 38 . It can hardly go back to war without Algerian 39 , which looks 40 . And retiring for a sulk in the Sahara desert is hardly an eye-catching form of protest.21.

单选题 The meeting was to ______ at ten o'clock

单选题. Breakthrough Mine-detection Turns Ocean Floor "Transparent" 突破性的探雷技术使得海床“一览无余” Since 1776, when naval mines were invented, navies have rightfully feared the stealthy and relatively simple weapons, which can disable or destroy warships and paralyze vital shipping. Navies worldwide employ a host of mine-detection technologies and techniques, most of them complicated, expensive, and far from perfect. So a simpler, more effective method for detecting these mines, developed by a physicist at North Carolina State University, could make big waves in naval headquarters around the globe. Unlike current mine-detection techniques, the patented methodology finds objects buffed in the ocean floor without the use of complex, unreliable modeling and without the usual arrays of sonar transmitters and receivers. Instead, the method records the return echo of a sonar transceiver's "ping", then time-reverses and transmits that signal. The following echo clearly shows buffed objects, and suppresses the response from the seafloor itself, making the underwater terrain "transparent." Dr. David M. Pierson, then a doctoral student in physics at NC State, demonstrated the new approach in research he conducted with Dr. David E. Aspnes, Distinguished University Professor of Physics, in late 2003. The project was supported by a grant from the Office of Naval Research. Pierson has since joined the Applied Physics Laboratory of Johns Hopkins University in Baltimore, where his work is supported in part by the US Navy. "The method has not been explored as a solution to this problem until now," said Pierson. "Using time reversal on the return echoes back scattered by buffed mines gave us results we considered amazing." According to Aspnes, the young physicist's research is a breakthrough. "Time reversal is a technique that has been used before in various contexts, including optics and acoustics, but before Pierson's work the advantages of time reversal for isolating targets in backscattered signals were never before recognized." Using time reversal to find buffed mines requires only one transceiver, said Pierson, although more can be used, and the method isn't limited by the composition of the ocean floor. "Previous methods had to incorporate a lot of complex modeling of the seafloor and the ocean environment," Pierson said, "and required sophisticated software and hardware systems. My time-reversal technique not only simplifies the needed equipment, but also can be implemented using existing sonar equipment, with minor software changes. More elaborate analyses of echoes are also made possible." What Pierson has done, said Aspnes, is to demonstrate a new approach that uses sonar but is simpler and works better than any previous method. "In Pierson's approach," he said, "a ping' is first transmitted from a sonar transceiver. The return echo is then recorded, time-reversed, and transmitted. He discovered that in the next echo the response from the seafloor was suppressed, but the echo from buried objects was enhanced. This enhancement is seen even if the signal from the buried object is too small to be detected in the first return." The NC State discovery should please naval mine-detection experts, who now use everything from dolphins to divers to sophisticated software modeling and elaborate sonar arrays in their grim work. And it should send those who design such mines back to their equally grim drawing boards.11. Before the NC State discovery of a new method for detecting naval mines, ______.

单选题 Pumas, which are larger, cat-like animals

单选题 When an invention is made

单选题. Sea rise as a consequence of global warming would immediately threaten that large fraction of the globe living at sea level. Nearly one-third of all human beings live within 36 miles of a coastline. Most of the world's great seaport cities would be 21 : New Orleans, Amsterdam, Shanghai, and Cairo. Some countries—Maldives Islands in the Indian Ocean, islands in the Pacific—would be inundated. Heavily populated coastal areas such as in Bangladesh and Egypt, 22 large populations occupy low-lying areas, would suffer extreme 23 . Warmer oceans would spawn stronger hurricanes and typhoons, 24 in coastal flooding, possibly swamping valuable agricultural lands around the world. 25 water quality may result as 26 flooding which forces salt water into coastal irrigation and drinking water supplies, and irreplaceable, natural 27 could be flooded with ocean water, destroying forever many of the 28 plant and animal species living there. Food supplies and forests would be 29 affected. Changes in rainfall patterns would disrupt agriculture. Warmer temperatures would 30 grain-growing regions pole-wards. The warming would also increase and change the pest plants, such as weeds and the insects 31 the crops. Human health would also be affected. Warming could 32 tropical climate bringing with it yellow fever, malaria, and other diseases. Heat stress and heat mortality could rise. The harmful 33 of localized urban air pollution would very likely be more serious in warmer 34 . There will be some 35 from warming. New sea-lanes will open in the Arctic, longer growing seasons further north will 36 new agricultural lands, and warmer temperature will make some of today's colder regions more 37 . But these benefits will be in individual areas. The natural systems—both plant and animal—will be less able than man to cope and 38 . Any change of temperature, rainfall, and sea level of the magnitude now 39 will be destructive to natural systems and living things and hence to man as well. The list of possible consequences of global warming suggests very clearly that we must do everything we can now to understand its causes and effects and to take all measures possible to prevent and adapt to potential and inevitable disruptions 40 by global warming.21.

单选题 In 1983