恒星昂立版：2008年12月英语六级阅读理解答案

1.C)New explanations for the obesity epidemic

2. A)gained the least weight

3. B)it causes sleep loss

4. D)it contributes to our weight gain

5. C)it suppresses their appetite

6. D)those who quit smoking

7. B)the rising proportion of minorities in its population

8.not entirely clear
9.family size
10 party genetiz