Jimcouldn’tunderstandhowthemachineworkeduntilhisfriends____howtouseitA

发布时间:2020-08-13 21:06:07

Jim couldn’t understand how the machine worked until his friends____ how to use itA.promisedB.explainedC.thoughtD.heard

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B解析考查词义辨析。promised 答应,允诺,explained解释,thought认为,heard听到,句意:吉姆不明白这台机器如何工作直到它的朋友们解释了如何使用。所以选B。
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