Mr.Smithgradually_____aknowledgeof

发布时间：2020-07-25 12:57:02

Mr. Smith gradually _____ a knowledge of the subjectA.attainedB.achievedC.requiredD.acquired

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D解析考查动词。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。句意：史密斯先生渐渐学到这门学科的知识。
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