Can you remember the scientist and his theory(理论) we have learned?
- A.which
- B.that
- C.who
- D.whom
答案
正确答案:B
知识点:定语从句

本题考查定语从句中关系词的用法。题中关系词在定语从句中作宾语,但先行词是the scientist and his theory,既有人又有物,所以只能用关系代词that,当然关系词在从句中作宾语时也可以省略。故答案选B。

略
