48.What is the man's occupation?
(A) He works in sales.
(B) He's a newcomer to the conference.
(C) He's an experienced conference attendee.
(D) He's a marketing professional.
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統計: A(318), B(6), C(39), D(10), E(0) #3158560
統計: A(318), B(6), C(39), D(10), E(0) #3158560