----Have you ever heard of Steve Jobs?
----Yes, he was a great man set up Apple Computer with his friend.
A. which
B. who
C. what
D. when
网友回答
A. which
(答案→)B. who
C. what
D. when
解析：which哪一个；who谁；what 什么；when 什么时候。句意：你听说过史蒂夫.乔布斯吗？——是的，他是一个和他的朋友建立了苹果电脑公司的伟大的人。先行词a great man为下文逻辑主语，指人，故引导词用who，选B。