题目内容

_______ basic first-aid techniques will help you respond quickly to emergencies.

A. Known B. Having known

C. Knowing D. Being known

C

【解析】

试题分析:句意:了解基本的急救技术将帮助你对紧急情况作出迅速反应。Knowing basic first-aid techniques是动名词短语做主语。A. Known过去分词表被动完成;B. Having known做状语,表动作在先;C. Knowing 和后面的basic first-aid techniques一起构成短语做主语;D. Being known是现在分词的被动形式。由句意可知选C。

考点:考查动名词做主语的用法。

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