问问OG11-122(OG10-182)讨论里没找到,谢谢了

122. The earliest Mayan pottery found at Colha, in Belize, is about 3,000 years old. Recently, however, 4,500-year-old 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 Mayan people to make agricultural implements.
(B) Carbon dating of corn pollen in Colha indicates that agriculture began there around 4,500 years ago.
(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.
(D) Successor cultures at a given site often adopt the style of agricultural implements used by earlier inhabitants of the same site.
(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

选项D中说到MAYAN是采用了早期居民的IMPLEMENTS,但是原文中又说到这种IMPLEMENTS与其他史前居民的IMPLEMENTS有明显差异,这样的话D选项还解释得通吗?有点点SELF-DEFEATED的感觉啊.

会不会是在4500年那里有点东西遗漏了,比如说原文中说到最近发现的IMPLEMENTS是4500年的,而这种4500年的IMPLEMENTS与史前居民的IMPLEMTNS有明显差别,而没提到4500年-3000年之间里是否存在的居民,而这种居民就正是MAYAN采用IMPLEMENTS的那种居民呢?? 希望大家指点指点

如果导致重复发贴,先道歉了

D选项： Mayan 是学习于或沿袭于4500年前的某一原始部落风格，而这一部落未必是 Mayan 的祖先，故而削弱了其原文的结论即Mayan 与这一部落为同一部落进而Mayan在4500年前在 Colha 定居的结论。

原文所说的其他部落 other cultures known to have inhabited the area in prehistoric times只是为了论述出土文物风格的不同且为了对比Mayan与4500年前原始部落风格相同而引出其所暗示结论，这些没有LZ所分析的隐含含义，望注意。