问题
选择题
________ as the “first lady of speech”,Dr, Lillian Glass is recognized as one of the world's leading experts on communication skills.
A.Knowing
B.Having known
C.Known
D.To be known
答案
答案:C
根据句意及句子结构可知,句子的主语Dr,Lillian Glass实际上就是选项动词的主语,相当于As he is known as...引导的原因状语从句,为被动结构,故选过去分词known。