He ______ a good knowledge of English by careful study.A、gainedB、obtainedC、ear

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问题 He ______ a good knowledge of English by careful study.

选项 A、gained
B、obtained
C、earned
D、acquired

答案 D

解析 这四个词都有“获得”的意思。gain通常指获得对自己有利、有用的事物,如: to gain fame(获得名声),to gain victory(获胜),to gain experience(获得经验);obtain指有强烈的愿望,并通过努力而获得所需之物,如:to obtain what one wants(得到他想要的东西),to obtain permission(获得允许);earn指以工作挣得(钱),或因有某种品德或行为而博得,如:to earn a lot of money (挣许多钱),to
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