求教：陈向东黄皮逻辑117页46题！！谢谢~~

qumiao11111

in Swartkans territory, archaeologists discovered charred bone fragments dating back 1 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?
正确答案是：(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

为什么这个选项是对的呢？？

cycyang

(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

这些骨头碎片是在多个石灰岩层中发现的，而在这些石灰岩层中同时也有早期原始人类使用的切割工具。

若此项正确，则说明这些烧焦的动物骨头碎片很肯那个和早期原始人类有关，和论据“they had been heated to temperatures no higher than those produced in experimental campfires made from branches of white stinkwood”一起，加强了结论“the charred bone fragments are evidence of the use of fire by early hominids”。

qumiao11111

哦，原来是这样，也就是说不是直接加强，而是增强他的相关性来间接加强了
谢谢~~