题目内容
Mr. Smith gradually _____ a knowledge of the subject.
A. attained B. achieved C. required D. acquired
D
解析:
acquired (=gain for oneself by skill or ability, by one's own efforts or behavior)(由技术、能力、努力或行为)获得; 得到:He has acquired a good command of English language.(他已精通英语。)
achieve, vt. 取得(胜利、成功等), 实现(目标、目的等)。
attain, vt. 达到(目的等), 取得(成就等):1) I hope you will attain your object.(我希望你会达到你的目的。)2)He attained success through hard work.
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