It seems likely that a number of astronomical phenomena, such as the formation of planetary nebulas, may be caused by the interaction where two stars orbit each other at close range.
It seems likely that a number of astronomical phenomena, such as the formation of planetary nebulas, may be caused by the interaction where two stars orbit each other at close range.
(A) may be caused by the interaction where two stars orbit each other
(B) may be caused by the interaction between two stars that each orbit the other
(C) are because of the interaction between two stars that orbit each other
(D) are caused by the interaction of two stars where each is orbiting the other
(E) are caused by the interaction of two stars orbiting each other
答案是E，我的问题是D中的where怎么错了？笔记上说是没有明确表示地点，stars能算地点吗？
还有each和the other搭配错误，这句话怎么理解啊？？
谢谢大家了~~
-- by 会员 ozymendias (2010/6/7 14:01:56)