标题: 请教OG48 [打印本页] 作者: appletutu 时间: 2005-10-26 12:19 标题: 请教OG48 48. The golden crab of the Gulf of Mexico has not been fished commercially in great numbers, primarily on account of living at great depths-- 2,500 to 3,000 feet down.
(A) on account of living
(B) on account of their living
(C) because it lives
(D) because of living
(E) being they live
答案是C没有疑问，但是我不明白D答案为什么不可以选，OG上这么解释：
Choice D, like A, fails to provide a noun or pronoun to perform the action of living, but even with its the phrases would be more awkward and less clear than it lives