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  3. Bad eating habits, increased food availability, increasingly sedentary lifestyle and reduced physical activity are the first fou

Bad eating habits, increased food availability, increasingly sedentary lifestyle and reduced physical activity are the first fou

admin2009-08-19  49
问题 Bad eating habits, increased food availability, increasingly sedentary lifestyle and reduced physical activity are the first four causes of the obesity epidemic.
Studies of human’s eating fish with PCBs have found that ______.
选项
答案pollution can gain people weight
解析 本题涉及到对人们食用含有PCBs污染物的鱼的研究，从而将题目出处定位到Pollution部分。该部分第二段末句提到，通过对于吃过北美大湖区的含有PCBs污染物的鱼的人们的研究，研究者得出了类似的关联：毒素吃的越多，体重上升就越多，因此可以得出答案。
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大学英语六级

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