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  3. My Space and other Web sites have unleashed a potent new phenomenon of social networking in cyberspace,【1】at the same time, a gr

My Space and other Web sites have unleashed a potent new phenomenon of social networking in cyberspace,【1】at the same time, a gr

admin2011-03-11  68
问题     My Space and other Web sites have unleashed a potent new phenomenon of social networking in cyberspace,【1】at the same time, a growing body of evidence is suggesting that traditional social【2】play a surprisingly powerful and under-recognized role in influencing how people behave.
    The latest research comes from Dr. Nicholas A. Christakis, at the Harvard Medical School, and Dr. James H. Fowler, at the University of California at San Diego. The【3】reported last summer that obesity appeared to【4】from one person to another【5】social networks, almost like a virus or a fad. In a follow-up to that provocative research, the team has produced【6】findings about another major health【7】: smoking. In a study published last week in the New England Journal of Medicine, the team found that a person’s decision to【8】the habit is strongly affected by【9】other people in their social network quit—even people they do not know. And, surprisingly, entire networks of smokers appear to quit virtually【10】.
    For【11】of their studies, they【12】of detailed records kept between 1971 and 2003 about 5,124 people who participated in the landmark Framingham Heart Study.  Because many of the subjects had ties to the Boston suburb of Framingham, Mass. , many of the participants were【13】somehow—through spouses, neighbors, friends, co-workers—enabling the researchers to study a network that【14】12,067 people.
    Taken together, these studies are【15】a growing recognition that many behaviors are【16】by social networks in【17】that have not been fully understood. And【18】may be possible, the researchers say, to harness the power of these networks for many【19】, such as encouraging safe sex, getting more people to exercise or even【20】crime.
选项 A、range
B、differ
C、vary
D、spread
答案D
解析 本题要求考生判断空格处应填入的动词使所在句子意义完整。从本句可以看出，两位研究者报告说肥胖症像病毒(或时尚)一样从一个人向另一个人……。我们可以得知空格内所需内容与“传染”或“传播”相关，因此D选项spread符合要求，是“传播”的意思。单纯从搭配来看，四个选项都可以和from...to...搭配，但意义均不同。A选项range from...to...表示在某个范围内浮动；B选项differ from...to...表示前后两者不同；C选项vary form...to...表示前后两者有差异。
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