求助prep187

yaoyaoer

187.    (27622-!-item-!-188;#058&002521)

United States Senator Daniel Inouye was appointed to several posts within the Democratic party during his first term, that included assistant majority whip and vice-chair of the Democratic Senatorial Committee.
A. that included
B. which includes
C. including
D. some of which were
E. among them being
我选的D，但是正确答案选的C，请帮忙解答一下！

yaoyaoer

谢谢啊。。

Bourne_NY

D里的定语从句引道词which离posts太远，中间好几个名词，所以用which修饰posts不合适。
C的including n.结构修饰之前的posts就没有这个问题。