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标题: 请教一道OG 12th的逻辑题13 [打印本页]

作者: 我是小苞 时间: 2009-9-14 15:36
标题: 请教一道OG 12th的逻辑题13
In Swartkans territory, archaeologists discovered charred bone fragments dating back on million years. Analysis of the fragments, which came from a variety of animals, showed that they had been heated to temperatures no higher than those produced in experimental campfires made from braches of white stinkwood, the most common tree around Swartkans.

Which of the following, if true, would, together with the information above, provide the best basisi for the claim that the charred bone fragments are evidence of the use of fire by early hominids?

A. The white stinkwood tree is used for building material by the present-day inhabitants of Swartkans

B. Forest fires can heat wood to a range of temperatures that occur in campfires.

C. The bone fragments were fitted together by the archaeologists to form the complete skeletons of several animals

D. Apart from the Swartkans discovery, there si reliable evidence that early hominids used fire as many as 500000 years ago.

E. The bone fragments were found in several distinct layers of limestone that contained primitive cutting tools known to have been used by early hominids

答案是E，我当时选了B，我到现在还不知道B 为什么错。
我的理解是，由于那些骨骼碎片的燃烧温度比实验室里造出来的火种温度要低（原文）
问题是：原文和下列选项中的那一项合起来，这些骨头碎片是早期人类生火用的（问题）

原文+选项=问题，所以选B了
请高人指导

作者: melodyflying 时间: 2009-9-14 16:19

B明明就是削弱了啊

题干让我们证明那些fragment是早期人类留下的我们就要找出一个选项可以把人和fragment联系起来得

B选项Forest fires 可以达到这个温度不就在侧面说明那些charred bone fragments 是Forest fires 产生留下的吗？

作者: GMAT_onjob 时间: 2009-9-15 13:56

给你提供一个我自己琢磨的山寨版架桥法：

题目给出的是fire<-->bone 的关系

题目文的是 fire <--> early hominids的关系

要填补这个gap，那就必须找bone和hominds都有的选项，only E。。。

作者: 我是小苞 时间: 2009-9-15 19:19
这个好！太感谢你了！！

作者: suomiting 时间: 2009-9-24 02:14
Thanks for asking this question!

作者: 璐璐Grace 时间: 2011-3-12 22:33
请问为什么问题问的是fire-early hominid 的关系，而不是bone -fire 的关系？

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