单选题The reference to "Naiman and his colleagues (1978)" in paragraph 4 is made ______.

单选题Although Ms. Brown found some of her duties to be ______, her supervision of forty workers was a considerable responsibility.

单选题In the new shark {{U}}repellent{{/U}} method, an insulated cable is buried on the bottom of the sea around a beach from which people swim.

单选题In a bold promotional ______ for the movie, he smashed his car into a passing truck.

单选题 (21) summary of the physical and chemical (22) of life must begin, not on the Earth, but (23) the Sun; in fact, (24) the Sun's very center. (25) is here that is to be found the (26) of the energy that the Sun constantly (27) space (28) light and heat. This energy is liberated at the center of the Sun as billions upon billions of nuclei hydrogen atoms (29) each other and (30) to form nuclei of helium, and, (31) doing so, (32) some of the energy that is stored in the nuclei of atoms. The output of light and heat of the Sun (33) that some 600 million tons of hydrogen (34) helium in the Sun every second. This the Sun (35) for several thousands of millions of years.

单选题Opponents of legalization often argue that inside the breast of all doctors, both sides of the argument agree, beats the heart of a Mengele ______. A. for whom patients must be protected B. against whom patients must be protected C. against whom patients must protect themselves D. for whom patients must be being protected

单选题{{B}}Passage 1{{/B}} Community cancer clusters are viewed quite differently by citizen activists than by epidemiologists. Environmentalists and concerned local residents, for instance, might immediately suspect environmental radiation as the culprit when a high incidence of cancer cases occurs near a nuclear facility. Epidemiologists, in contrast, would be more likely to say that the incidences were "inconclusive" or the result of pure chance. And when a breast cancer survivor, Lorraine Pace, mapped 20 breast cancer cases occurring in her West Islip, Long Island, community, her rudimentary research efforts were guided more by hope--that a specific environmental agent could be correlated with the cancers than by scientific method. When epidemiologists study clusters of cancer cases and other noncontagious conditions such as birth defects or miscarriage, they take several variables into account, such as background rate (the number of people affected in the general population), cluster size, and specificity (any notable characteristics of the individual affected in each case). If a cluster is both large and specific, it is easier for epidemiologists to assign blame. Not only must each variable he considered on its own, but it must also be combined with others. Lung cancer is very common in the general population. Yet when a huge number of cases turned up among World War Ⅱ shipbuilders who had all worked with asbestos, the size of the duster and the fact that the men had had similar occupational asbestos exposures enabled epidemiologists to assign blame to the fibrous mineral. Although several known carcinogens have been discovered through these kinds of occupational or medical clusters, only one community cancer cluster has ever been traced to an environmental cause. Health officials often discount a community’s suspicion of a common environmental cause because citizens tend to include cases that were diagnosed before the afflicted individuals moved into the neighborhood. Add to this the problem of cancer's latency. Unlike an infectious disease such as cholera, which is caused by a recent exposure to food or water contaminated with the cholera bacterium, cancer may have its roots in an exposure that occurred 10 to 20 years earlier. Do all these caveats mean that the hard work of Lorraine Pace and other community activists is for nothing? Not necessarily. Together with many other reports of breast cancer clusters on Long Island, the West Islip situation highlighted by Pace has helped epidemiologists lay the groundwork for a well designed scientific study.

单选题 The witness was ______ by the judge for failing to answer the question.

单选题The bags used to hold water are likely to be damaged by ______.

单选题I was twenty-five years old, and I'd just been (laid down) from my job as (division) manager (at) a (mortgage banking) firm.

单选题What is the passage mainly about?

单选题Without Bob's testimony, evidence of bribery is lacking and ______ in the case will be impossible. A. verdict B. sentence C. conviction D. acquittal

单选题As skies are filled with millions of migrating birds, European scientists say the seasonal miracle appears to depend on a seeming______: The fatter the bird, the more efficiently it flies.

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, 61 Paul Hogan, made Australia the popular 62 it is today. In the three years after Crocodile Dundee was 63 , visitor numbers doubled. 64 what makes people want to visit the place where a movie was filmed? In many cases the reason is 65 the film makes audiences 66 of the existence of a place. 67 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 di Caprio's film The Beach has 68 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 69 a tourist boom in the film's 70 ,Koh Phi Phi. Some people are influenced by a movie's 71 as much as its location, especially if it is a romance. Four Weddings and a Funeral has 72 that" The Crown" hotel in Amersham has been busy ever 73 the movie was first shown. In fact the bedroom where the 74 played by Hugh Grant and Andie McDowell spend their first night together is 75 for years ahead. "We've 76 the number of marriage proposals that have been made there," say the hotel 77 . It is not just the tourist boards who are happy 78 the influence of films on a destination. Residents of a rather run down area of London have seen house prices almost double 79 Julia Robert's 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 80 there. Perhaps they hope to revive their romances.

单选题A friendship may be deep, lasting, or ______, casual and situational.

单选题Despite all the reports of physicians and health authorities, some individuals find that cigarette smoking is ______.

单选题He ______ himself bitterly for his miserable behavior that evening.(2007年中国人民大学考博试题)

单选题Professor Hawking is ______ as one of the world's greatest living physicists. A. dignified B. clarified C. acknowledged D. illustrated