Researchers have found that when very overweight people, who tend to have relatively low metabolic rates, lose weight primarily through dieting, their metabolisms generally remain unchanged. They will thus burn significantly fewer calories at the new weight than do people whose weight is normally at that level. Such newly thin persons will, therefore, ultimately regain weight until their body size again matches their metabolic rate.
The conclusion of the argument above depends on which of the following assumptions?
(A) Relatively few very overweight people who have dieted down to a new weight tend to continue to consume substantially fewer calories than do people whose normal weight is at that level.
(B) The metabolisms of people who are usually not overweight are much more able to vary than the metabolisms of people who have been very overweight.
(C) The amount of calories that a person usually burns in a day is determined more by the amount that is consumed that day than by the current weight of the individual.
(D) Researchers have not yet determined whether the metabolic rates of formerly very overweight individuals can be accelerated by means of chemical agents.
(E) Because of the constancy of their metabolic rates, people who are at their usual weight normally have as much difficulty gaining weight as they do losing it.
答案是A，但我第一个就把它排除了，因为它代表了小样本。
大家讨论下，这题很晕
文章的表意是：a. 新陈代谢率相对低的胖人通过节食来减肥，新陈代谢率是不变的
b. 在同样的体重下，这些胖人的新陈代谢率比较低
所以这些人会达到与他们的新陈代谢率相符的体重（就是说会长胖）
结论成立所依赖的assumption应该是这些胖人所消耗的卡路里应该大于等于那些在那个体重的正常人
看选择支，只有a选项表达了这个意思。至于楼主说few代表小样本，可能是词语理解上的偏差，few应该是几乎没有人（反过来说，就是几乎所有人），a选项翻译为几乎没有相关的胖人摄入卡路里的量小于那些在那个体重上的正常人
更正，将消耗改为消费或者是摄入
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