题目内容
5._________ hearing the news,all of us jumped with joy.( )A. | On | B. | For | C. | At | D. | Before |
分析 一听到那个消息,我们都欢快得跳起来.
解答 答案是A.考查介词on,表示"当…时".on+动词ing,表示一…就.句意是"一听到那个消息,我们都欢快得跳起来."故答案是A.
点评 解答此类题目,首先需要理解每个介词的具体用法,然后根据句意和相关语法选择正确的答案.

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