题目内容
【题目】 The old rules have to be________because they only applied to the circumstances that existed when they were made a hundred years ago.
A. developed B. established
C. observed D. revised
【答案】D
【解析】句意:老的规则需要被修改因为它们只适合一百年前的状况。A项表示"培养,发展";B项表示"建立";C项表示"观察"而D项正是"修改"之意,故选D。
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