精选优质文档-倾情为你奉上2019高考英语二轮阅读理解归类练习医学常识（详解）First aid is the action of limited care for an illness or injury in the beginning.It is usually performed by a lay person to a sick or injured patient until definitive medical treatment can be accessed.Certain selflimiting illnesses or minor injuries may not require further medical care.It generally consists of series of simple lifesaving techniques that an individual can be trained to perform with minimal equipment.While first aid can also b
