老prep2-71

zxkingsey

Unlike other Mayan cities, Cancn's commercial power throughout the lowlands seems to be from using its strategic position at the foot of the highlands, which were a source of jade, obsidian, and other valuable commodities.
(A) Cancn's commercial power throughout the lowlands seems to be from using its strategic position at the foot of the highlands, which were a source of jade, obsidian, and other valuable commodities

(B) Cancn's commercial power throughout the lowlands seems to have come from using its strategic position at the foot of the highlands, a source of jade, obsidian, and other valuable commodities
(C) the commercial power of Cancn throughout the lowlands seemed to have come from using its strategic position at the foot of the highlands, a source of jade, obsidian, and other valuable commodities
(D) Cancn seemed to be using its strategic position at the foot of the highlands, which was a source of jade, obsidian, and other valuable commodities, in becoming a commercial power throughout the lowlands

(E) Cancn seems to have used its strategic position at the foot of the highlands, a source of jade, obsidian, and other valuable commodities, to become a commercial power throughout the lowlands

答案E
问一下：B中Canc??n's commercial power throughout the lowlands seems to have come from using ...这里在逻辑上有没有问题？commercial power不可能成为using这个动作的实施者啊！

zxkingsey

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