Everyone should keep on getting himself educated so as to be ________ modern technology．
A.good at
B.successful in
C.up to date with
D.interested in
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C解析此题考查的是词组辨析。be good at对……擅长；be successful in在……方面成功；be up to date跟上时代，不落后于；be interested in对……感兴趣。根据句子意思“我们每个人都应该不断接受教育，以使自己能跟上时代的步伐，故应该选择