What determines your weight? What did scientists think was true?

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问题 What determines your weight?
What did scientists think was true?

选项 A、Each person has a fixed weight range
B、Each person has a weight range of 9kg.
C、Each person wants to control his or her weight.
D、Each person wants to eat to his or her heart’s content.

答案A

解析 答案在文章的最后—段,科学家们的研究发现证明了他们认为是正确的想法:每个人都有一个固定的体重幅度(each person has a comfortable weight range)。这个幅度可能高达9公斤,但并非每个人的幅度都是同样的9公斤,从而否定了干扰比较强的B项。
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