These materials are the most important records we keep those men's places,time a
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These materials are the most important records we keep ________ those men's places,time and means of gambling．
[]A．for
B．on
C．up
D．of
试题答案
答案：D
解析：考查介词。此题只要看出短语结构keep record of，便可选出答案。 |