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 ply 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.
10（）
A.surprisingly
B.simultaneously
C.spontaneously
D.ply
参考答案：B
解析：
[考点] 词义辨析
本题要求考生根据上下文选择符合原文含义的副词，修饰不定式to quit。结合本段内容，说明戒烟行为在交际圈里相互影响，整个吸烟群落______戒烟。从前文“人们戒烟的决定受他人是否戒烟的影响”得知在一个吸烟圈落内戒烟也会传播，因此有人戒烟，导致他人亦戒烟，从而entire networks of smokers都在quit，因此，B选项simultaneously能体现出交际圈的影响。
[干扰项分析] A选项surprisingly，C选项spontaneously，D选项strongly都不能准确体现群体成员相互影响、共同戒烟的局面。