Before I talked with scientist, I had never met knowledgeable person like him.A. a; a B.

Before I talked with scientist, I had never met knowledgeable person like him.
A. a; a
B. the; the
C. the; a
D. a; the

A. a; a B. the; the C. the; aD. a; the解析：句意：在我与这位科学家交谈前，我从未见过像他这样知识丰富的人。前面的scientist是特指的，该用定冠词；后面的person是泛指的，该用不定冠词。所以选C。

对的，就是这个意思