Question

【题目】 basic first-aid skills, according to the expert, will help people respond effectively to emergencies.

A. Known B. Having known

C. Knowing D. Being known

Answer 1

【答案】C

【解析】考查非谓语动词。句意：按着专家说的，了解基本急救技能将帮助人们有效地应对突发事件。根据句意可知此处是动名词做主语，故选C。