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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  54
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 indicate that obesity is heritable, and the heritability is ______.
选项
答案65%
解析 本题涉及到肥胖遗传问题，从而将题目出处定位到Fat Equals Fecund部分。该部分第四段第二句提到，这是因为肥胖是具有遗传性的，对双胞胎的研究表明肥胖遗传率是65%，这可直接得出答案。
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大学英语六级

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