以下是引用leeon在2004-9-20 15:26:00的发言: 我也不太确定,只是感觉这个结构比较怪异。
I always thought interaction between X and B is good . but here
237. 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
interaction of ...So no problem |