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.
例如: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 学了og知道要选c,可是是不是becasue就是优于because of的?特别是后面的结构比较长的时候。on account of在什么时候可以用?用法和becasue of 一样吗?