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。

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