Although the development of a communicative system is not unique to human beings, the natural acquisition of l______as a system of highly abstract rules and regulations for creative communication is what distinguishes humans from all other animal species.
【正确答案】：language(P241)解析:语言习得是一种所有人都有的经遗传而来的能力,尽管交际系统的发展并非人类所独有,但是能够自然地习得一种由高度抽象的规则所组成的能够进行创造性交际活动的语言系统是人类区别于其他动物的主要特征。从这个意义上来讲,可以说人类天生就具备了习得至少一种语言的生物基础。
