Question

By serving others,a person focuses on someone other than himself or herself,_______can be very eye-opening and rewarding.

A.who                                                             B.which

C.what                                                            D.that

Answer 1

B

解析:

which引导非限制性定语从句,指代整个句子。在非限制性定语从句中,必须用which引导,而不用that引导。who引导定语从句时,其先行词是表示人的名词。what不用于引导定语从句,而用于引导名词性从句。