GMAT申友逻辑CR题库-A sudden increase in the production of elephant ivory artifacts on the Mediterranean coast of North Africa occurred in the-OG16-真题答案解析

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A sudden increase in the production of elephant ivory artifacts on the Mediterranean coast of North Africa occurred in the tenth century. Historians explain this increase as the result of an area opening up as a new source of ivory and argue on this basis that the important medieval trade between North Africa and East Africa began at this period.Each of the following, if true, provides some support for the historians' account described above EXCEPT:

(A) In East Africa gold coins from Mediterranean North Africa have been found at a tenth-century site but at no earlier sites.

(B) The many surviving letters of pre-tenth-century North African merchants include no mention of business transactions involving East Africa.

(D) Documents from Mediterranean Europe and North Africa that date back earlier than the tenth century show knowledge of East African animals.

(E) East African carvings in a style characteristic of the tenth century depict seagoing vessels very different from those used by local sailors but of a type common in the Mediterranean.

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答案：

北非地中海

沿岸的象牙贸易突然增长发生在十世纪。历史学家解释增长来自新象牙来源，基于那时期北非和东非之间的中世纪贸易。 Except题，去除北非与东非十世纪相关选项 A 东非，来自北非的金币在十世纪地点，而非更早地点；相关，排 B 北非商人十世纪前的信没提及东非贸易；相关，排 C 东非的发掘表明建筑的改变，反映了北非模式；相关，排 D 十世纪前的地中海欧洲和北非的文件显示东非动物知识；东非北非十世纪前开始相关，非十世纪，正确 E 东非十世纪海船雕刻不同于本地航海者，而在地中海很普遍，相关，排