精选优质文档-倾情为你奉上1.What are the main features of human language?A. arbitrariness: It means that there is no logical connection between meanings and soundsB. productivity: Language is productive or creative in that it makes possible the construction and interpretation of new signals by its users.C. duality: Language is a system, which consists of two sets of structures. At the lower level there is a structure of sounds, which are meaningless by themselves. But they ca