单选题In ancient Greek, the term euthanatos meant "easy death". Today euthanasia (安乐死) generally refers to mercy killing, the voluntary (自愿) ending of the life of someone who is terminally ill. Like abortion, euthanasia has become a legal, medical, and moral issue over which opinion is divided. Euthanasia can be either active or passive. Active euthanasia means that a physician or other medical personnel takes an action that will result in death, such as giving an overdose of deadly medicine. Passive euthanasia means letting a patient die for lack of treatment, or stopping the treatment that has begun. Examples of passive euthanasia include taking patients off a breathing machine or removing other life-support systems. Stopping the food supply is also considered passive. A good deal of the debate about mercy killing originates from the decision-making process. Who decides whether a patient is to die? This issue has not been solved legally in the United States. The matter is left to state law, which usually allows the physician in charge to suggest the option of death to a patient's relatives, especially if the patient is brain dead. In an attempt to make decisions about when their own lives should end, several terminally ill patients in the early 1990s used a controversial suicide device, developed by Dr. Jack Kevorkian, to end their lives. In parts of Europe, the decision-making process has become very flexible. Even in cases where the patients are not brain dead, patients have been put to death without their approval at the request of relatives or at the suggestion of physicians. Many cases of passive euthanasia involve old people or newborn infants. The principle justifying this practice is that such individuals have a "life not worthy of life". In countries where passive euthanasia is not legal, the court systems have proved very tolerant in dealing with medical personnel who practice it. In Japan, for example, if physicians follow certain guidelines they may actively carry out mercy killings on hopelessly ill people. Courts have also been somewhat tolerant of friends or relatives who have assisted terminally ill patients to die.

单选题The comparison between humans and other animals is made to show that ______.

单选题The propeller began to______, and the small plane started down the runway.

单选题All the afternoon he worked in his room with the door ______.

单选题______dog was the first animal to be domesticated is generally agreed upon by authorities in the field.

单选题Betty was ______ all sorts of terrible things that might happen to her if she were left alone in the mountain. [A] imagining [B] guessing [C] supposing

单选题The results of the experiments performed by Elizabeth Hazen and Rachel Brown were ______ not only because these results challenged old assumptions but also because they called the ______ methodology into question.

单选题Brazilian music is thoroughly imbued with African themes, and illustrious composers have long found inspiration in the black musical heritage. A. imaginative B. sensitive C. distinguished D. persistent

单选题With the introduction of the computer, libraries today are quite different from ______ they were in the past. A) that B) what C) which D) those

单选题The author implies that many employee health insurance plans

单选题An estimated 20 percent of the U.S. population has no bank account. More than half of this group don't have credit card ______ can not get bank loans.

单选题The underlined word "which" refers to ______.

单选题The World Exposition Center ______ by the end of 2010, will attract over 70 million people.

单选题It has long been the subject of speculation among the police and criminologists: what would happen if all the officers who now spend so much of their time taking statements, profiling criminals and moving pieces of paper around were suddenly put on the streets? Crime figures released by London's Metropolitan Police this week provide the best answer yet. Following the bombings of July 7th and 21st, thousands of police officers materialised on London's pavements, many of them sporting brightly coloured jackets. Drawn from all over the city, they were assigned to guard potential targets such as railway stations. The police presence was especially heavy in the bombed boroughs: Camden (which was struck three times), Hammersmith and Fulham, Lambeth, Tower Hamlets, Westminster and the City of London. The show of force did not just scare off terrorists. There was less crime in July than in May or June, which is unusual: the warmer month tends to bring out criminal tendencies, as windows are left open and alcohol is imbibed alfresco. But the chilling effect was much stronger in the six boroughs that were targeted by terrorists. There, overall crime was down by 12% compared with July 2004.In inner London as a whole, crime fell by 6%. But in outer London, where the blue line was thinner, it went up slightly. Simon Foy, who tracks such trends at the Metropolitan Police, says that crime fell particularly steeply on the days of the attacks, partly because of the overwhelming police presence and partly because "even criminals were watching their televisions". What is significant is that crime barely rose thereafter. That was a change from the aftermath of September 11th 2001, when crime quickly soared just about everywhere—possibly because officers were deployed only in the very centre of London. "The received wisdom among criminologists is that marginal changes invisible patrolling have little or no effect on crime," says Mike Hough, a criminologist at King's College London. July's experiment should put that argument to rest. Even if offenders do not make rational calculations about the odds of being caught—which was low both before and after the bombings—they will be moved by a display of overwhelming force.

单选题A young pair of pandas is expected to settle in their new home in the Atlanta's Zoo to- morrow, tile Beijing Youth Daily reported yesterday. Born in the Chengdu Panda Breeding Base, the two, named Jiu Jiu and Hua Hua, will .spend the next 10 years in the United States. At a cost of $ 4 million, their new home is an exact copy of the natural environment where they lived in Chengdu, Sichuan Province in Southwest China. The panda house is also equipped with advanced facilities to study pandas in an all-around way, said the report. Visitors can view pandas in a separate room inside the panda house, which is open to public every day. As part of an international co operative plan to protect and study panda, the co-operation between Chengdu and Atlanta has finally come to an agreement after three years of discussion. And the research fund of $ 5 million raised by Atlanta's zoo has also contributed to the co-operation. After a flight in a huge and comfortable case, Jiu Jiu and Hua Hua will be put under quarantine(隔离) for two weeks upon their arrival. And a welcome ceremony will be held for them in Atlanta on November 20, with ambassador(大使) Li, former U. S. President Carter and his wife, the Georgia governor and mayor of Atlanta.

单选题______on a clear day, far from the city crowds, the mountains give him a sense of infinite peace.

单选题According to the author, in order to stay young and attractive, women should ______. A. follow the fashion B. dress up in beautiful clothes C. do more exercises D. enrich their mind

单选题The doctor informed his patient that the drug was very ______ and can have unpleasant sideeffects. A.potent B.efficient C.intricate D.fragile