Question

In the street I met the scientist ________ gave us a talk last week.

1. A.
   he
2. B.
   which
3. C.
   who
4. D.
   what

Answer 1

C
解析：
分析與
解答：本題考查定語從句連接詞的用法。引導定語從句的關系代詞that，which和who引導定語從句時在句中的職能和意義完全相同，即which用來指物，who用來指人，that既可用來指人也可用來指物。該題應首先排除A、D項；
先行詞是scientist，指人，因此，該題的正確答案是C．who在定語從句中作主語。例如：(1)Was the book which/that you were reading a novel by Lu Xun? 你在讀的那本小說是魯迅寫的嗎?(2)The woman that/who/whom you saw just now is our new English teacher. 剛才你看到的那個婦女是我們的新英語老師。