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.超重的人新代慢，少吃减肥后，新代速度不变。所以比减肥后同重的新代快的人消耗的卡络里少，所以会更容易增肥到适应他们的慢代谢速度。
The conclusion of the argument above depends on which of the following assumptions? 要排除他因，也就是weaken的反向。
(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.通过结食瘦下来的人里很少有人会接着结食-即接着比正常人少吃。 (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. 我选的是E，现在看E其实是能加强新陈代谢速度作为胖瘦变化的直接原因，但是题里说新代速度是个恒量，所以E是无意义的。这样理解对吗？ 作者: gracezz 时间: 2010-4-26 18:21
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. 真不知道我为啥选了E，E说的话要想成立，前提是本来很瘦的人不多吃。。。。其实都是和consume的卡落里的量有关。。。。思路在哪有问题呢？作者: catherine66 时间: 2010-5-5 22:18
我选的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. 目前体重比吃东西的多少更决定燃烧的热量的多少 貌似无关...作者: gracezz 时间: 2010-5-6 07:53
顶一下~~NN们来看一下吧~~作者: Queeny11 时间: 2010-5-6 08:07
A 原文大概说了几件事情： 重的人。。新陈代谢低。。即使节食瘦下来。。因为代谢低消耗的能量就少。。然后说这些人比正常人更容易肥。。。假设是什么呢？ 这些人和正常人吃的一样多。。。消耗的少。。就肥了呗。。。 A说的是 这些节食的人没有继续节食下去。。也就是恢复饮食了。。吃的一样多了。。作者: gracezz 时间: 2010-5-6 11:24
A 原文大概说了几件事情： 重的人。。新陈代谢低。。即使节食瘦下来。。因为代谢低消耗的能量就少。。然后说这些人比正常人更容易肥。。。假设是什么呢？ 这些人和正常人吃的一样多。。。消耗的少。。就肥了呗。。。 A说的是 这些节食的人没有继续节食下去。。也就是恢复饮食了。。吃的一样多了。。
