单选题The police took fingerprints and identified the body.A. discoveredB. touchedC. missedD. recognized

单选题下面有3篇短文，每篇短文后有5道题，每道题后面有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}} Electronic Mail During the past few years, scientists all over the world have suddenly found themselves productively engaged in task they once spent their lives avoiding—writing, any kind of writing, but particularly letter writing. Encouraged by electronic mail's surprisingly high speed, convenience and economy, people who never before touched the stuff are regularly, skillfully, even cheerfully tapping out a great deal of correspondence. Electronic networks, woven into the fabric of scientific communication these days, are the route to colleagues in distant countries, shared data, bulletin boards and electronic journals. Anyone with a personal computer, a modem and the software to link computers over telephone lines can sign on. An estimated five million scientists have done so with more joining every day, most of them Communicating through a bundle of interconnected domestic and foreign routes known collectively as the Internet, or net. E-mail is starting to edge out the fax, the telephone, overnight mail, and of course, land mail. It shrinks time and distance between scientific collaborators, in part because it is conveniently asynchronous (异步的). (Writer can type while their colleagues across time zones sleep; their message will be waiting). If it is not yet speeding discoveries, it is certainly accelerating communication. Jeremy Bernstein, the physicist and science writer, once called E-mail the physicist's umbilical cord (脐带). Later other people, too, have been discovering its connective virtues. Physicists are using it; college students are using it; everybody is using it; and as a sign that it has come of age, the New Yorker has celebrated its liberating presence with a cartoon—an appreciative dog seated at a keyboard, saying happily, "On the Internet, nobody knows you're a dog. "

单选题The course gives you basic instruction in car maintenance.

单选题But ultimately he gave in.

单选题Going Back to Its Birthplace No sporting event takes hold of the world"s attention and imagination like the Olympic Games. The Football World Cup fascinates fans in Europe and South America; baseball"s World Series is required viewing in North America; and the World Table Tennis Championships attracts the most interest in Asia. But the Olympics belong to the whole world. Now, after travelling to 17 countries over 108 years, the summer Games are returning to Athens, the place where the first modern Olympics was held. Participation in the Games is looked on not only as an achievement, but also as an honor. The 16 days between August 13 and 29 will see a record—202 countries compete, up from Sydney"s 199. Afghanistan is back, having been banned from Sydney because the Taliban government didn"t let women do sports. There is also a place for newcomers East Timor and Kiribati. A total of 10,500 athletes will compete in 28 sports, watched by 53 million ticket-pay-ing viewers as well as a television audience of 4 billion. Athens is to use its rich history and culture to make the Olympics as special as possible. The Games will open with cycling events which start in front of the Parthenon and Acropolis monuments. The final event will be a historic men"s marathon following the Original route run by Phidippides in 490 BC to bring news of victory over the Persians. The ancient stadium at Olympia, first used for the Games nearly three centuries ago, will stage the shot put competitions. And the Panathenian Stadium, where the first modern Olympics was held, is to host the archery (射箭) events. If the well-known ancient sites deliver a great sense of history to the Games, the 39 new venues add a modern touch to the city of Athens. The main Olympic stadium, with a giant glass and steel roof, is the landmark (标志) building of the Olympics. "We believe that we will organize a "magical" Games." said Athens 2004 President Gianna Angelopoulos Daskalaki. "Our history with the Olympic Games goes back nearly 3,000 years, and Athens 2004 could be the best ever."

单选题A beautiful woman attended to me in that store yesterday. A. waited on B. talked to C. spoke to D. stayed with

单选题Her words offended me.A. made angryB. made happyC. made excitedD. made disappointed

单选题We have to ask them to quit talking in order that all people present could hear us clearly.

单选题Abraham Lincoln On November 19, 1863, Abraham Lincoln went to Gettysburg in Pennsylvania to speak at the National Soldiers Cemetery. The Civil War was still going on. There was much criti- cism of President, Lincoln at the time. He was not at all popular. He had been invited to speak at Gettysburg only out of politeness. The principal speaker was to be Edward Everett, a famous statesman and speaker of the day. Everett was a handsome man and very popular everywhere. It is said that Lincoln prepared his speech on the train while going to Gettysburg. Late that night, alone in his hotel room and tired out, he again worked briefly on the speech. The next day Everett spoke first. He spoke for an hour and 57 minutes. His speech was a perfect example of the rich oratory of the day. Then Lincoln rose. The crowd of 15,000 people at first paid little attention to him. He spoke for only nine minutes. At the end there was little applause. Lincoln turned to a friend and remarked, "I have failed again. " On the train back to Washington, he said sadly,"That speech was a flat failure, and the people are disappointed. " Some newspapers at first criticized the speech. But little by little people read the speech they began to understand better. They began appreciate its simplicity and its deep meaning. It was a speech Which only Abraham Lincoln could have made. Today, every American school child learns Lincoln's Gettysburg Address by heart. Now everyone thinks of it as one of the greatest speeches ever given in American history.

单选题His long-term goal is to set up his own business.A. ideaB. energyC. aimD. order

单选题When he finally emerged from the cave after thirty days, John was shockingly pale.

单选题Driven to Distraction Joe Coyne slides into the driver's seat, stars up the car and heads to town. The empty stretch of interstate gives way to urban congestion, and Coyne hits the brake as a pedestrian suddenly crosses the street in front of him. But even if he hadn't stopped in time, the woman would have been safe. She isn't real. Neither is the town. And Coyne isn't really driving. Coyne is demonstrating a computerized driving simulator that is helping researchers at Old Dominion University (ODU) examine how in-vehicle guidance systems affect the person behind the wheel. The researchers want to know if such systems, which give audible or written directions, are too distracting—or whether any distractions are offset by the benefits drivers get from having help finding their way in unfamiliar locations. "We're looking at the performance and mental workload of drivers," said Caryl Baldwin, the assistant psychology professor leading the research, which involves measuring drives' reaction time and brain activity as they respond to auditory and visual cues. The researchers just completed a study of the mental workload involved in driving through different kinds of environments and heavy vs. light traffic. Preliminary results show that as people "get into more challenging driving situations, they don't have any extra mental energy to respond to something else in the environment," Baldwin said. But the tradeoffs could be worth it, she said. The next step is to test different ways of giving drivers navigational information and how those methods change the drivers' mental workload. "Is it best if they see a picture '" that shows their position, a map kind of display?" Baldwin said. "Is it best if they hear it?" Navigational systems now on the market give point-by-point directions that follow a prescribed route. "They're very unforgiving," Baldwin said. "If you miss a tarn, they can almost seem to get angry." That style of directions also can be frustrating for people who prefer more general instructions. But such broad directions can confuse drivers who prefer route directions, Baldwin said. Perhaps manufacturers should allow drivers to choose the style of directions they want, or modify systems to present some information in a way that makes sense for people who prefer the survey style, she said. Interestingly, other research has shown that about 60 per cent of men prefer the survey style, while 60 per cent women prefer the route style, Baldwin said. This explains the classic little thing of why men don't like to stop and ask for directions and women do, Baldwin added.

单选题Preserving Nature for Future Demands for stronger protection for wildlife in Britain sometimes hide the fact that similar needs are felt in the rest of Europe. Studies by the Council of Europe, of which 21 countries are members, have shown that 45 per cent of reptile species and 24 per cent of butterflies are in danger of dying out. European concern for wildlife was outlined by Dr. Peter Baum, an expert in the environment and natural resources division of the council, when he spoke at a conference arranged by the administrators of a British national park. The park is one of the few areas in Europe to hold the council"s diploma for nature reserves of the highest quality, and Dr. Peter Baum had come to present it to the park once again. He was afraid that public opinion was turning against national parks, and that those set up in the 1960s and 1970s could not be set up today. But Dr. Baum clearly remained a strong supporter of the view that natural environments needed to be allowed to survive in peace in their own right. "No area could be expected to survive both as a true nature reserve and as a tourist attraction," he went on. "The short-sighted view that reserves had to serve immediate human demands for outdoor recreation should be replaced by full acceptance of their importance as places to preserve nature for the future." "We forget that they are the guarantee of life systems, on which any built-up area ultimately depends," Dr. Baum went on. "We could manage without most industrial products, but we could not manage without nature. However, our natural environment areas, which are the original parts of our countryside, have shrunk to become mere islands in a spoiled and highly polluted land mass."

单选题John Hanson helped draft instructions for Maryland"s delegates to the Stamp Act Congress.

单选题Asbestos is a mineral fiber that can cause cancer if {{U}}inhaled{{/U}}.

单选题Norwich has been a city since its first cathedral was built.

单选题What are the most important events in the Olympic Games?

单选题It was a(n) inevitable consequence of the decision.

单选题About one - third of Americans who qualify for public assistance haven't signed up. That amounts to millions of people needlessly going without food stamps, low - income housing or health insurance. This trouble is what Real Benefits, a Boston—based software start- up, was created to solve. The five - person firm's web database substitutes easy - to - use screening(放映，播放) and enrollment tools for complicated government paperwork. So far Real Benefits has connected nearly 100,000 families to more than $ 371 million in government aid since 2000. What may be the reason that many Americans who qualify for public assistance haven't signed up?A. The application for social security is too complicated for many families.B. They can afford a life even without getting money from the government.C. They don't know how to use computer database to submit applications.D. They would not get aid from governments even though they sign up.

单选题 {{B}}Colors{{/B}} There are two ways to create colors in a photograph. One method, called additive, starts with three basis colors and adds them together to produce some other colors. The second method, called subtractive, starts with white light (a mixture of all colors in the spectrum) and, by taking away some or all other colors, leaves the one desired. In the additive method, separate colored lights combine to produce various other colors. The three additive primary colors are green, red and blue (each providing about one-third of the wavelengths in the total spectrum). Mixed in varying proportions, they can produce all colors. Green and red light mix to produce yellow; red and blue light mix to produce magenta; green and blue mix to produce cyan. When equal parts of all three of these primary-colored beams of light overlap, the mixture appears white to the eye. In the subtractive process, colors are produced when dye (as in paint or color photographic materials) absorbs some wavelengths and so passes on only part of the spectrum. The subtractive primaries are cyan (a bluish green), magents (a purplish pink), and yellow; these are the pigments or dyes that absorb red, green and blue wavelengths, respectively, thus subtracting them form white light. These dye colors are the complementary colors to the three additive primaries of red, green and blue. Properly combined the subtractive primaries and absorb all colors of light, producing black. But, mixed in varying proportions, they too can produce any color in the spectrum. Whether a particular color is obtained by adding colored lights together or by subtracting some light from the total spectrum, the result looks the same to the eye. The additive process was employed for early color photography. But the subtractive method, while requiring complex chemical techniques, has turned out to be more practical and is the basis of all modern color films.