问题补充：
The person at the meeting is famous an actor.
A. referred ; for
B. referred to ; as
C. referred to ; for
D. referring ; as
答案：
A. referred ; for
(答案→)B. referred to ; as
C. referred to ; for
D. referring ; as
解析：第一空考查过去分词短语作定语，refer to 谈到，涉及，与The person之间是被动关系，所以用过去分词，第二空为固定短语：be famous as 作为什么而出名。句意：在会议上被谈到的这个人作为一名演员而出名。所以选B。
