“But every extra unhappy friend increases the likelihood that you’ll be unhappy by 7 percent，” Fowler said.

　　The finding is interesting and it is useful, too, Fowler said.

　　“Among other benefits, happiness has been shown to have an important effect on reduced mortality (死亡率), pain reduction, and improved cardiac (心脏的) function. So better understanding of how happiness spreads can help us learn how to promote a healthier society，” he said.

　　The study also fits in with other data suggested in 1984 that having $ 5,000 extra increased a person’s chances of becoming happier by about 2 percent.

　　“A happy friend is worth about $ 20,000，” Christakis said.

　　[语篇解读]　美国科学家的一项最新研究成果表明，快乐感可以互相传递。这项研究成果为我们构建更为健康、和谐的社会提供了依据和方法。

　　1．According to the research, your happiness ________.

　　A. has nothing to do with your workmates or schoolmates

　　B. has something to do with anyone who has a close relationship with you

　　C. depends on those who are in favour of you or are against you

　　D. has little to do with what social connections you have

　　[解析]　推理判断题。根据第二段、第三段内容可知，快乐感会不断传递和扩散，你的配偶、朋友、邻居、亲戚等的快乐指数会直接影响你的快乐程度，故选B。

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