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
原文意思：一些宇宙的现象生成的原因是两个挨的比较近的行星之间的交互导致的
题目分析：A读到where那里觉得意思不对，不是两个行星处在interaction那个地方而是两个行星之间的interaction，干掉。
B的each后面用orbit，不一致啊，干掉。
C和B犯了相同错误，杀。
D又用where，杀。
E前面四个选项的的毛病没有，至于这个选项有没有其他毛病，无所谓，反正就剩一个了，选！
