题目

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 答案：B 解析: 本题考查非限定性定语从句。根据句子意思，用which来替代前面所叙述的事情。 （以下为潍坊2007届二轮模拟试题五）

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