prep 07-42 虽然选对了，但是还是不太明白。。。。多谢啦～

sophialj

42.    (32943-!-item-!-188;#058&007554)

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.

答案选a,我通过排除做对了，但是还是有点晕乎，大家帮忙看看，多谢啦～～～！

zafteria

A选项的FEW相当于一个否定句，假设题的最优选项。意思是：没有超重的人通过节食减肥成功却继续摄取比正常体重的人还少的热量，也就是继续节食。
回答yes，支持观点。因为吃的比正常人多，代谢却少，最后还是会反弹。
回答no，削弱观点。因为继续节食还能继续减肥下去啊。

sophialj

我想明白了，谢谢这位热心童鞋～～～！