the critical period hypothesis

the critical period hypothesis
【正确答案】：The critical period hypothesis refers to an early period in one's' life extending from about age two to puberty, during which the human brain is most ready to acquire language naturally and effortlessly, a period that coincides with the period of brain lateralization for language functions.(P220)
【解析】关键期假设指的是人的生命中大约从两岁到青春期的时间段,在此期间最适宜习得某种语言,语言学习可以在没有外界明确指导的情况下得以轻松、迅速地进行。