文章大意：研究发现肥胖青少年更有可能结交肥胖朋友，肥胖和社交圈子有着密切联系。

　　1．What surprised the researchers in the study?

　　A．Obese young people have thin friends.

　　B．The link between obesity and social networks is so strong.

　　C．The conclusion they drew had been already found by others.

　　D．The study has used more sophisticated methods.

　　答案：B　细节理解题。文章第二段提到，研究人员吃惊地发现肥胖和社交圈子有紧密的联系，故选B。

　　2．What was another finding of the study?

　　A．Obese young people don't have any worry about themselves.

　　B．Obese girls think of others but seldom be remembered.

　　C．Obese girls don't have as normal a body shape as others.

　　D．Obesity is normal among American young students.

　　答案：B　细节判断题。由第四段可知，另一个发现是与正常体形的女孩相比，肥胖的女孩子说出更多朋友的名字，但是却很少被当做朋友而叫出名字。

　　3．What suggestion did the researcher make to the educators?

　　A．Pay more attention to health problems relating to obesity.

　　B．Take the social outcomes of obesity into consideration.

　　C．Understand and focus on the social cost for the overweight.

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