173. 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.
A
(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.
谁能帮忙把答案A选项帮忙翻译一下, A选项里的FEW 应该为较少表示否定的意思,后面的FEWER也有表示否定的意思, 那么翻译过来好象是说很少的胖子减肥后能够继续消耗相对常人来说更少的热量. 也就是说很多的胖子减肥成功后, 能够消耗更多能量,继续保持身材.
谁能解释一下?
173.
If compared with people who have not been overweight, newly thin people burned fewer calories but also generally consumed fewer calories, one would not reliably conclude that the newly thin people would regain weight. Therefore, the conclusion assumes that the newly thin do not generally consume few calories, making choice A the best answer.
The conclusion does not rely on differences in the variability of the metabolism (choice B), just on differences in the rate of metabolism, nor does it rely on the relative significance of different factors in determining how many calories a person burns in a day (choice C). Neither does the conclusion assume anything about whether accelerators for the metabolism have been discovered (choice D), or about why some people have difficulty gaining weight (choice E).
who can help me?
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