单选题With immense relief I stopped running.

单选题Her behaviour is extremely childish. A. simple B. immature C. beautiful D. pretty

单选题Medical Journals Medical journals are publications that report medical information to physicians and other health professionals. In the past, these journals were available only in print. With the development of electronic publishing, many medical journals now have Web sites on the Internet, and some journals publish only online. A few medical journals, like the Journal of the American Medical Association, are considered general medical journals because they cover many fields of medicine. Most medical journals are specialty journals that focus on a particular area of medicine. Medical journals publish many types of articles. Research articles report the results of research studies on a range of topics varying from the basic mechanisms of diseases to clinical trials that compare outcomes of different treatments. Review articles summarize and analyze the information available on a specific topic based on a careful search of the medical literature. Because the results of individual research studies can be affected by many factors, combining results from different studies on the same topic can be helpful in reaching conclusions about the scientific evidence for preventing, diagnosing or treating a particular disease. Case conferences and case reports may be published in medical journals to educate physicians about particular illnesses and how to treat at them. Editorials in medical journals are short essays that express the views of the authors, often regarding a research or review article published in the same issue. Editorials provide perspective on how the current article fits with other information on the same topic. Letters to the editor provide a way for readers of the medical journal to express comments, questions or criticisms about articles published in that journal.

单选题The gar is a fish with a long, {{U}}slender{{/U}} body and scales as hard as flint.

单选题They agreed to settle the dispute by peaceful means. A. complete B. determine C. untie D. solve

单选题He endured agonies before he finally expired. A. fired B. resigned C. died D. retreated

单选题Ants always {{U}}put{{/U}} food away in autumn. A. store B. steal C. eat D. carry

单选题The number of the United States citizens who are eligible to vote continues to increase.

单选题Star Quality A new anti-cheating system for counting the judges' scores in ice skating is flawed, according to leading sports specialists. Ice skating's governing body announced the new rules last week after concerns that a judge at the Winter Olympics may have been unfairly influenced. Initially the judges in the pairs figure-skating event at the Winter Olympics in Salt Lake City voted 5 to 4 to give the gold medal to a Russian pair, even though they had a fall during their routine. But the International Skating Union suspended the French judge for failing to reveal that she had been put under pressure to vote for the Russians. The International Olympics Committee then decided to give a second gold to the Canadian runners-up (亚军) . The ISU, skating's governing body, now says it intends to change the rules. In future 14 judges will judge each event, but only 7 of their scores-selected at random-will count. The ISU won't finally approve the new system until it meets in June but already UK Sport, the British Government's sports body, has expressed reservations. "I remain to be convinced that the random selection system would offer the guarantees that everyone concerned with ethical sport is looking for", says Jerry Bingham, UK Sport's head of ethics (伦理) . A random system can still be manipulated, says Mark Dixon, a specialist on sports statistics from the Royal Statistical Society in London. "The score of one or two judges who have been hobbled (受到贿赂) may still be in the seven selected." Many other sports that have judges, including diving, gymnastics, and synchronized swimming, have a system that discards the highest and lowest scores. If a judge was under pressure to favour a particular team, they would tend to give it very high scores and mark down the opposition team, so their scores wouldn't count. It works for diving, says Jeff Cook, a member of the international government body's technical committee. "If you remove those at the top and bottom you're left with those in the middle, so you're getting a reasonable average." Since the 2000 Olympics in Sydney, diving has tightened up in its system still further. Two separate panels of judges score different rounds of diving during top competitions. Neither panel knows the scores given by the other. "We have done this to head off any suggestion of bias," says Cook. Bingham urged the ISU to consider other options. "This should involve examining the way in which other sports deal with the problem of adjudicating (裁定) on matter of style and presentation," he says.

单选题Medicine Award Kicks off Nobel Prize Announcements Two scientists who have won praise for research into the growth of cancer cells could be candidates for the Nobel Prize in medicine when the 2008 winners are presented on Monday, kicking off six days of Nobel announcements. Australian-born US citizen Elizabeth Blackburn and American Carol Greider have already won a series of medical honors for their enzyme (酶) research and experts say they could be among the front-runners for a Nobel. Among the pair"s possible rivals are Frenchman Pierre Chambon and Americans Ronald Evans and Elwood Jensen, who opened up the field of studying proteins called nuclear hormone receptors (受体). As usual, the tight-lipped award committee is giving no hints about who is in the running before presenting its decision in a news conference at Stockholm"s Karolinska Institute. Alfred Nobel, the Swede who invented dynamite (炸), established the prizes in his will in the categories of medicine, physics, chemistry, literature and peace. The economics prize is technically not a Nobel but a 1968 creation of Sweden"s central bank. Nobel left few instructions on how to select winners, but medicine winners are typically awarded for a specific breakthrough rather than a body of research. Hans Jornvall, secretary of the medicine prize committee, said the 10 million kronor (瑞典克朗) (US $1.3 million) prize encourages groundbreaking research but he did not think winning it was the primary, goal for scientists. "Individual researchers probably don"t look at themselves as potential Nobel Prize winners when they"re at work," Jornvall told The Associated Press. "They get their kicks from their research and their interest in how life functions." In 2006, Blackburn, of the University of California, San Francisco, and Greider, of Johns Hopkins University in Baltimore, shared the Lasker prize for basic medical research with Jack Szostak of Harvard Medical School. Their work set the stage for research suggesting that cancer cells use telomerase (端粒酶) to sustain (维持) their uncontrolled growth.

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个最佳答案填在题前的括号内。{{B}}第一篇{{/B}} {{B}}The Street Violinist{{/B}} I got up and dressed, stuck my violin under my jacket, and went out into the streets to try my luck. I wandered about for an hour, looking for a likely spot, feeling as though I were about to commit a crime. Then I stopped at last under a bridge near the station and decided to have a try. I felt tense and nervous. It was the first time, after all. I drew the violin from under my coat like a gun. It was here, in Southampton, with trains rattling overhead, that I was about to declare myself. One morning I was part of the hurrying crowds, the next I stood apart, my back to the wall, my hat on the pavement before me, the violin under my chin. The fist notes I played were loud and raw, like a declaration of protest. Then they settled down and began to run more smoothly and to stay more or less in turn. To my surprise I was neither arrested nor told to shut up. Indeed, nobody took any notice at all. Then an old man, without stopping, surreptitiously tossed a penny into my hat as though getting out of some guilty evidence. I worked the streets of Southampton for several days, gradually acquiring the truths of the trade by trial and error. It was not a good thing, for instance, to let the hat fill up with money—the sightcould discourage the patron. Nor was it wise to empty it completely, which could also confuse him, giving him no hint as to where to drop his money. Placing a couple of pennies in the hat to start the thing going soon became a regular ritual, making sure between tunes, to hide most of the earnings, but always leaving two pennies behind. Old ladies were most generous, and so were women with children, shopgirls, typists and barmaids. As for the man, heavy drinkers were always willing listeners and so were big guys with muscles. But never a man with a gentleman's hat, briefcase or dog. Respectable types were the meanest of all. Except for retired army officers, who Would yell "Why aren't you working, young man?" and then toss some money into the hat to hide their confusion.

单选题Fear clutched at her heart.

单选题At midnight, we were aroused by a knock at the door.

单选题It is useless to argue with him once he has {{U}}made up his mind{{/U}}.

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 honour, 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 5. 3 million ticket-paying 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The story was published with the sole purpose of selling newspapers.

单选题They have {{U}}given up{{/U}} the hope to save their friend from drowning. A. ended B. abandoned C. built D. strengthened

单选题The council meeting Uterminated/U at 2 o'clock.

单选题The major {{U}}portion{{/U}} of writer Benjamin Brawley's work was in social criticism.

单选题The river widens considerably as it begins to turn east.