【題目】________ basic first－aid techniques will help you respond quickly to emergencies.

A. Known B. Having known

C. Knowing D. Being known

【答案】C

【解析】

試題分析：考查非謂語(yǔ)動(dòng)詞的用法。動(dòng)名詞在本句中作主語(yǔ)，此處表示一般情況，用一般式；having known 是完成式，表示動(dòng)作已經(jīng)完成或先于謂語(yǔ)動(dòng)詞發(fā)生。句意為：懂得一些基本的急救技巧將有助于你對(duì)緊急情況作出快速應(yīng)對(duì)。

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