逻辑 Critical Reasoning-4700

标记
In Swartkans territory, archaeologists discovered charred bone fragments dating back one 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 branches of white stinkwood, the most common tree around Swartkans.

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

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

选项是否正确?

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  • 错误

正确的用户笔记

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elan0513 2015-09-25 05:22:23

动物骨头被发现——动物骨头被不高于营火的温度加热过——动物骨头是人们用火的证据 加强:骨头不是被大自然的火烧过的,它有跟其他有人类痕迹的工具一起被发掘出来,说明它也是人们的一种工具——曾经被营火烧过~

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christinasysu 2016-06-04 18:47:31

读题啊读题!动物骨头被发现——动物骨头被不高于营火的温度加热过——动物骨头是人们用火的证据 加强:骨头不是被大自然的火烧过的,它有跟其他有人类痕迹的工具一起被发掘出来,说明它也是人们的一种工具——曾经被营火烧过~

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Charlotte0305 2015-07-06 14:16:27

骨头碎片上有人类使用工具的痕迹 说明是人造的,并非自然大火烧成的

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onlyjx 2016-07-04 12:32:07

在那里有人类用的工具,说明人类存在的可能性增加,说明其他原因造成火烧的原因会减小。

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snow199511 2016-06-12 11:41:32

在骨头发现的地方,也同时发现了其他证据:limestone 石灰石(助燃)+切割工具 支持结论:人类在一百万年前会使用火

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kristy16s 2016-05-16 14:07:04

limestone 石灰石 -可助燃 primitive 原始的

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ypheroin 2016-03-07 20:18:27

骨头碎片和人类切割工具在同一时期存在(同一岩层被发现),说明存在可能这些烧焦的骨骼是人类蓄意切开(用工具)并用火烧熟的。

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gloria熊 2015-10-24 15:34:32

The only thing that needs to be proved in the given statement is that the bones were not charred by the forest fire but by humans. And E supports this by proving that these animals were cut by the tools before being burnt.

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gloria熊 2015-10-24 15:32:38

骨头被烤过,温度和篝火的温度相近-->早期人类用火 A WT树被现在的人用来建房-无关 B森林火灾的温度...-无关 C把骨头凑起来了-无关 D有其他证据证明他们用火-无关 E 骨头被发现的岩层有其他早期人类用过的cutting tools

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T100G700 2015-09-16 18:29:22

动物骨头被发现——动物骨头被不高于营火的温度加热过——动物骨头是人们用火的证据 加强:骨头不是被大自然的火烧过的,它有跟其他有人类痕迹的工具一起被发掘出来,说明它也是人们的一种工具——曾经被营火烧过~

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