Could your best friend make you fat?
Researchers who have studied“networks”of obesity(肥胖) think so：they found that if someone's friend becomes obese, that person's chances of becoming obese increase by more than half.
Brothers or sisters and a husband or a wife also have an influence, although reduced_people whose brothers or sisters became obese were 40 percent more likely to grow obese, while people whose husband or wife became obese were 37 percent more likely to.
“This is the first study to show how obesity spreads through the social network from person to person，”James Fowler of the University of California, San Diego, who worked on the study, told in a telephone interviewing.
The researchers said their findings show that obesity is contagious—not like a virus which is contagious, but in a social sense.
It may help explain why obesity is worsening across the United States, with twothirds of Americans overweight and almost a third technically obese.
“It has become very popular to speak of the obesity epidemic.We began to wonder if it is truly an epidemic，”Dr.Nicholas Christakis, a professor of medical sociology at Harvard Medical School in Boston, told the briefing.
“We think that these findings reinforce(加强) the idea that obesity is not just an individual problem but a collective problem，”Christakis said.
“People look around them and see people gaining weight and it might change their attitude about what constitutes an acceptable body size，”he added.“You might say it's OK to be heavier.”
1．The underlined phrase“reduced people”refers to______.
A．the influence of people is smaller and smaller
B．fat persons are having less and less friends
C．the number of fat persons is decreasing largely
D．persons are becoming thinner and thinner
2．What's the new finding of researchers in the passage?
A．Obesity is popular with Americans.
B．Obesity spreads from person to person.
C．Obesity can be spread like a virus.
D．Obesity is becoming an epidemic.
3．In what aspect do your fat friends have an impact on you?
A．They may influence you how to choose a lover.
B．They may assist you in forming a life value.
C．They may change your attitudes towards obesity.
D．They may help you understand what obesity is.
4．From the passage，we can infer that________.
A．it's better not to make friends with fat persons
B．obesity is a kind of disease that can spread
C．most Americans think obesity is a kind of beauty
D．it needs a collective effort to deal with obesity
近朱者赤，近墨者黑，近肥胖者会发胖？如果你的朋友和家人发胖，你也很可能会发胖。在最近的一项研究中，研究者们有惊人的发现：肥胖会“社会传染”，它很容易从一个人传染给另一个人。
1．解析：细节理解题。从前面的have an influence知道，reduced people指的是影响性减少，因此A符合题意。
答案：A
2．解析：细节判断题。从第四段的obesity spreads through the social network from person to person可知，研究的结果为B。
答案：B
3．解析：细节判断题。结合最后一段的change their attitude about what constitutes an acceptable body size知道，答案为C。
答案：C
4．解析：推理判断题。从倒数第二段作者认为肥胖不是一个人的问题，而是一个集体性的问题，可知答案为D。
答案：D
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