Question

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

A. Known B. Having known

C. Knowing D. Being known

Answer 1

【答案】C

【解析】

试题分析：考查非谓语动词的用法。动名词在本句中作主语，此处表示一般情况，用一般式；having known 是完成式，表示动作已经完成或先于谓语动词发生。句意为：懂得一些基本的急救技巧将有助于你对紧急情况作出快速应对。