◎ 题干
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
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“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…”主要考查了你对  【关系代词】【非限制性定语从句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。