请教大侠~

penguinvino

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
这道题正确答案选C，但是C选项“，”前后是两个完整的句子吧？“，”不是不能连接两个句子么？

lxskyfly

因为because是连词，可以连接两个句子的。这个语法卤煮可以看看中文的语法书。