Feifei 52

Outsider1988 · 发表于 2010-6-19 22:47:07

52. Birds need so much food energy to maintain their body temperatures that some of them spend most of their time eating. But a comparison of a bird of a seed-eating species to a bird of a nectar-eating species that has the same overall energy requirement would surely show that the seed-eating bird spends more time eating than does the nectar-eating bird, since a given amount of nectar provides more energy than does the same amount of seeds

　　The argument relies on which one of the following questionable assumptions

　　(A) Birds of different species do not generally have the same overall energy requirements as each other

　　(B) The nectar-eating bird does not sometimes also eat seeds

　　(C) The time it takes for the nectar-eating bird to eat a given amount of nectar is not longer than the time it takes the seed-eating bird to eat the same amount of seeds

　　(D) The seed-eating bird does not have a lower body temperature than that of the nectar-eating bird

　　(E) The overall energy requirements of a given bird do not depend on factors such as the size of the bird, its nest-building habits; and the climate of the region in which it lives

连问题都读不懂
什么叫questionable assumptions啊

谁给解释一下
答案是C

sweety9 · 发表于 2010-6-26 11:40:00

应该是‘有质疑的假设’吧。
我说一下我的解题思路吧，不过不知道是不是正确的。
首先，问题中提出的ARGUMENT应该是同等量的N比同等量的S会产生更多的能量。
其次，这个ARGUMENT的EVIDENCE是：鸟吃S的时间比N长。
再次，问题中说的是QUESTIONABL ASSUMPTION，那么这个问题暗指的应该是ARGUMENT其实是不成立的，那你就要从选项中找到反击ARGUMENT的那一个
最后，因为EVIDENCE提出比较的是时间，对应选项是时间的只有C.
(我自己推理的是：C选项中说的N的时间不比S长，至少有可能是时间相同的，那么也就驳斥了同等N比S产生的能量要多的ARGUMENT)

Feifei 52

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