单选题 Everybody loves a fat pay rise. Yet pleasure at your own can vanish if you learn that a colleague has been given a bigger one. Indeed, if he has a reputation for slacking, you might even be outraged. Such behaviors is regarded as "all too human", with the underlying assumption that other animals would not be capable of this finely developed sense of grievance. But a study by Sarah Bronson and Franks de Wail of Emory University in Atlanta, Georgia, which has just been published in Nature, suggests that it is all too monkey, as well. The researchers studied the behaviors of female brown capuchin monkeys. They look cute. They are good-natured, co-operative creatures, and they share their food readily. Above all, like their female human counterparts, they tend to pay much closer attention to the value of "goodsand services" than males. Such characteristics make them perfect candidates for Dr. Bronson’s and Dr. de Waal's study. The researchers spent two years teaching their monkeys to exchange tokens for food. Normally, the monkeys were happy enough to exchange pieces of rock for slices of cucumber. However, when two monkeys were placed in separate but adjoining chambers, so that each could observe what the other was getting in return for its rock, their behaviour became markedly different. In the world of capuchins grapes are luxury goods (and much preferable to cucumbers). So when one monkey was handed a grape in exchange for her token, the second was reluctant to hand hers over for a mere piece of cucumber. And if one received a grape without having to provide her token in exchange at all, the other either tossed her own token at the researcher or out of the chamber, or refused to accept the slice of cucumber. Indeed, the mere presence of a grape in the other chamber ( without an actual monkey to eat it) was enough to induce resentment in a female capuchin. The researchers suggest that capuchin monkeys, tike humans, are guided by social emotions. In the wild, they are a co-operative, group-living species. Such co-operation is likely to be stable only when each animal feels it is not being cheated. Feelings of righteous indignation, it seems, are not the preserve of people alone. Refusing a lesser reward completely makes these feelings abundantly clear to other members of the group. However, whether such a sense of fairness evolved independently in capuchins and humans, or whether it stems from the common ancestor that the species had 35 million years ago, is, as yet, an unanswered question.

单选题European conservatives, until the end of the 19th century, rejected democratic principles and institutions. Instead they Uopted for/U monarchies or for authoritarian government.

单选题Eighty percent of mothers cradle their ______ in their left arms, holding them against the left side of their bodies.

单选题It______ on Fred that he would fail the course if he did not study harder.

单选题That wax dummy(假人)of a man is so ______ that people speak to it.

单选题We can infer from Paragraph 3 that ______.

单选题I decided to go to the cinema as soon as I ______.

单选题Each and every difference ______ contradiction.

单选题One hundred and thirteen million Americans have at least one bank-issued credit card. They give their owners automatic credit in stores, restaurants, and hotels, at home, across the country, and even abroad, and they make many banking services available as well. More and more of these credit cards can be read automatically, making it possible to withdraw or deposit money in scattered locations, whether or not the local branch bank is open. For many of us the "cashless society" is not on the horizon—it's already here. While computers offer these conveniences to consumers, they have many advantages for sellers too. Electronic cash registers can do much more than simply ring up sales. They can keep a wide range of records, including who sold what, when, and to whom. This information allows businessmen to keep track of their list of goods by showing which items are being sold and how fast they are moving. Decisions to reorder or return goods to suppliers can then be made. At the same time these computers record which hours are busiest and which employees are the most efficient, allowing personnel and staffing assignments to be made accordingly. And they also identify preferred customers for promotional campaigns. Computers are relied on by manufacturers for similar reasons. Computer-analyzed marketing reports can help to decide which products to emphasize now, which to develop for the future, and which to drop. Computers keep track of goods in stock, of raw materials on hand, and even of the production process itself. Numerous other commercial enterprises, from theaters to magazine publishers, from gas and electric utilities to milk processors , bring better and more efficient services to consumers through the use of computers.

单选题What we consider a luxury at one time frequently becomes a ______, many families find that ownership of two cars is indispensable.

单选题______through the attic and see if you can find anything for the jumble sale.

单选题 On September 7, 2001, a 68-year-old woman in Strasbourg, France, had her gall bladder (胆囊) removed by surgeons' operating, via computer from New York. It was the first complete telesurgery procedure performed by surgeons nearly 4, 000 miles away from their patient. In New York, Marescaux teamed up with surgeon Michel Gagner to perform the historic long-distance operation. A high-speed fiber-optic service provided by France Telecom made the connection between New York and Strasbourg. The two surgeons controlled the instruments using an advanced robotic surgical system, designed by Computer Motion Inc that enabled the procedure to be minimally invasive. The patient was released from the hospital after about 48 hours and regained normal activity the following week. The high-speed fiber-optic connection between New York and France made it possible to overcome a key obstacle to telesurgery time delay. It was crucial that a continuous time delay of less than 200 milliseconds be maintained throughout the operation, between the surgeon's movements in New York and the return video (from Strasbourg) on his screen. The delay problem includes video coding, decoding and signal transmission time. France Telecom's engineers achieved an average time delay of 150 milliseconds. "I felt as comfortable operating on my patient as if I had been in the room," says Marescaux. The successful collaboration (合作) among medicine, advanced technology, and telecomm unications is likely to have enormous implications for patient care and doctor training. Highly-skilled surgeons may soon regularly perform especially difficult operations through long-distance procedures. The computer systems used to control surgical movement can also lead to a breakthrough in teaching surgical techniques to a new generation of physicians. More surgeons-in-training will have the opportunity to observe their teachers in action in telesurgery operating rooms around the world. Marescaux describes the success of the remotely performed surgical procedure as the beginning of a "third revolution" in surgery within the last decade. The first was the arrival of minimally invasive surgery, enabling procedures to be performed with guidance by a camera, meaning that the abdomen (腹部) and thorax (胸腔) do not have to be opened. The second was the introduction of computer-assisted surgery, where complicated software algorithms (计算法) enhance the safety of the surgeon's movements during a procedure, making them more accurate, while introducing the concept of distance between the surgeon and the patient. It was thus natural to imagine that this distance--currently several meters in the operating room--could potentially be up to several thousand kilometers.

单选题For office innovators, the unrealized dream of the "paperless" office is a classic example of high-tech hubris(傲慢). Today's office drone is drowning in more paper than ever before.But after decades of hype, American offices may finally be losing their paper obsession. The demand for paper used to outstrip the growth of the US economy, but the past two or three years have seen a marked slowdown in sales — despite a healthy economic scene. Analysts attribute the decline to such factors as advances in digital databases and communication systems. Escaping our craving for paper, however, will be anything but an easy affair. " Old habits are hard to break," says Merilyn Dunn, a communications supplies director. " There are some functions that paper serves where a screen display doesn't work. Those functions are both its strength and its weakness. " In the early to mid-1990s, a booming economy and improved desktop printers helped boost paper sales by 6 to 7 percent each year. The convenience of desktop printing allowed office workers to indulge in printing anything and everything at very little effort or cost. But now, the growth rate of paper sales in the United States is flattening by about half a percent each year. Between 2004 and 2005, Ms. Dunn says, plain white office paper will see less than a 4 percent growth rate, despite the strong overall economy. A primary reason for the change, says Dunn, is that for the first time ever, some 47 percent of the workforce entered the job market after computers had already been introduced to offices. "We're finally seeing a reduction in the amount of paper being used per worker in the workplace," says John Maine, vice president of a pulp and paper economic consulting firm. " More information is being transmitted electronically, and more and more people are comfortable with the information residing only in electronic form without printing multiple backups. " In addition, Mr. Maine points to the lackluster employment market for white-collar workers — the primary driver of office paper consumption for the shift in paper usage. The real paradigm shift may be in the way paper is used. Since the advent of advanced and reliable office-network systems, data storage has moved away from paper archives. The secretarial art of "filing" is disappearing from job descriptions. Much of today's data may never leave its original digital format. The changing attitudes toward paper have finally caught the attention of paper companies, says Richard Harper, a researcher at Microsoft. " All of a sudden, the paper industry has started thinking, 'We need to learn more about the behavioural aspects of paper use, '" he says. "They had never asked, they'd just assumed that 70 million sheets would be bought per year as a literal function of economic growth. " To reduce paper use, some companies are working to combine digital and paper capabilities. For example, Xerox Corp. is developing electronic paper: thin digital displays that respond to a stylus, like a pen on paper. Notations can be erased or saved digitally. Another idea, intelligent paper, comes from Anoto Group. It would allow notations made with a stylus on a page printed with a special magnetic ink to simultaneously appear on a computer screen. Even with such technological advances, the improved capabilities of digital storage continue to act against " paperlessness," argues Paul Saffo, a technology forecaster. In his prophetic and metaphorical 1989 essay, " The Electronic Pinata(彩罐)," he suggests that the increasing amounts of electronic data necessarily require more paper. The information industry today is like a huge electronic pinata, composed of a thin paper crust surrounding an electronic core, " Mr. Saffo wrote. The growing paper crust "is most noticeable, but the hidden electronic core that produces the crust is far larger — and growing more rapidly. The result is that we are becoming paperless, but we hardly notice at all. " In the same way that digital innovations have increased paper consumption, Saffo says, so has video conferencing — with its promise of fewer in-person meetings — boosting business travel. "That's one of the great ironies of the information age," Saffo says. "It's just common sense that the more you talk to someone by phone or computer, it inevitably leads to a face-to-face meeting. The best thing for the aviation industry was the Internet. "

单选题Terrorists murder and kidnap people, ______ bombs, hijack airplanes, set fires, and commit other serious crimes.

单选题Jim Ayers had investigated all manner of felonies in his fourteen-year career with the Oregon State Police. Like most officers who had hired on as troopers, he was tall and well-muscled. He had thick, wavy hair, and a rumbling deep voice. He had worked the road for eight years, investigating accidents. He had seen much tragedy, but he had also learned what was "normal" tragedy—if there could be such a thing—and what was "abnormal" tragedy. Ayers had become an expert in both arson investigation and psychosexual crimes, and he had investigated innumerable homicides. Jerry Finch had a few years on him, both in age and experience. Together the two men drove to the scene at 79th and the Sunset, not knowing what to expect. The best detectives are not tough. If they were, they would not have the special intuitive sense that enables them to see what laymen cannot. But Jim Ayers, like his peers, usually managed to hide his own pain over what one human being can do to another behind a veneer of black humor and professional distance. After arriving at the scene, Finch and Ayers gazed down at the slender woman who lay on the freeway shoulder, her face and head disfigured by some tremendous force. They walked around the Toyota van and saw the scratch—like dents in its right front end and where a mm signal lens was broken out. Randy Blighton was still on the scene and he told Finch and Ayers how he had found the van butting against the median barrier of the freeway. That would have broken the signal light. They found the signal lens itself lying on the freeway in the fast lane. They also saw the beige purse that had been forcing the accelerator down before Bhghton kicked it away. It would have been enough to keep her engine running while the car was in gear. With flashlights Finch and Ayers looked into the van, playing light over the child's carseat, the blood splatter on the interior roof, the splash of blood on the interior hump over the transmission, and the pools of blood on the floor behind the front seats. A white plastic produce bag fluttered on the passenger-side floor. It too bore bloodstains. Jim Ayers had come to a bleak conclusion. The purpose of sending the van onto the highway was to cause it to be hit by other vehicles. Had that happened, had vehicles approaching at fifty-five to sixty-five miles an hour rounded the curve, they would have ineluctably smashed into the driver's side of the van, and even though a fire might not have resulted, the evidence of the woman's body and from the vehicle itself would have been obliterated. Further, in all likelihood, a chain reaction of accidents would have ensued, vehicle after vehicle piling up on this foggy night. Clearly, all whoever had perpetrated this crime cared about was that the crime he covered by a grinding collision of jagged steel, flying glass shards, and a proliferation of bodies.

单选题The {{U}}dispute{{/U}} between the faculty and the administration was not resolved until the faculty members got better working conditions.

单选题Ms. Rice, with customary class, simply expressed hope that this episode wouldn't ______ the charity in spite of the previous scandals. A. taint B. enhance C. sprain D. sponsor

单选题Unfortunately, the rate of his expenditures______his income.