One of the properties of language is that a language user can understand and produce sentences he/she has never heard before. This property of language is called（ ）.
A.duality B.productivity C.displacement D.arbitrariness正确答案B
One of the properties of language is that a language user can understand and produce sentences he/she has never heard before. This property of language is called（ ）.
A.duality B.productivity C.displacement D.arbitrariness正确答案B
