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  3. Who had the greatest influence on people who became obese? In what way is obesity contagious and epidemic?

Who had the greatest influence on people who became obese? In what way is obesity contagious and epidemic?

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问题 Who had the greatest influence on people who became obese?
In what way is obesity contagious and epidemic?
选项 A、Social networks let the obesity spread rapidly.
B、Individuals have genetically determined ranges of weights.
C、Obesity can easily spread from one to another without any physical contact.
D、Obesity can spread rapidly and extensively by infection and affecting many individuals in an area or a population at the same time.
答案A
解析 本题问的是为什么说肥胖具有传染性。A选项说的是因为社会关系网的原因，肥胖传播的很快，这是文章的本意。而另外C、D两个选项都是平常意义上的“传染”，指疾病可以通过接触而传染或能够在一个地区或人群中迅速广泛地蔓延。B选项与题意无关。
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