OG15 第119题求助

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4,500-year-oold stone agricultural implements were unearthed at colha. These implements resemble Mayan stone implements of a much later period, also found at Colha. Moreover, the implements’ designs are strikingly different from the designs of stone implements produced by other cultures known to have inhabited the area in prehistoric times. Therefore, there were surely Mayan settlements in Colha 4,500 years ago.

Which of the following, if true, most seriously weakens the argument/

(A) Ceramic ware is not known to have been used by the Maya to make agricultural implements.

(C) Archaeological evidence indicates that some of the oldest stone implements found at Colha were used to cut away vegetation after controlled burning of trees to open areas of swampland for cultivation.

(E) Many religious and social institutions of the Mayan people who inhabited Colha 3,000 years ago relied on a highly developed system of agricultural symbols.

正确答案D

请教NN

19931101

逻辑链不推了。简单的说就是三个premise都在解释这些工具的风格特征，想证明新出土的工具风格特点和后来的玛雅人一致，结论却是在推论”玛雅人生活“的年代（而不是”工具的年代“），中间漏了一个premise：“工具的年代＝玛雅人生活的年代”。所以答案d讲后面的人通常采用前面的人使用的工具特点，所以尽管俩个年代的工具特点相同也可能只是玛雅人借鉴了其他文化的工具特点而已，从而weaken the argument。