Duality and cultural transmission are two most important design features of human la

A. This indicates the design feature of().

B.cultural transmission

C.productivity

D.displacement

E.duality

A displacement

B cultural transmission

C duality

D productivity

A.arbitrariness

B.duality

C.creativity

D.replacement

Duality is a concretisation of arbitrariness and non-arbitrariness of language. ()

Duality is one of the features of language. ()

The followings are all features of language except __________.

A、duality

B、productivity

C、changeability

D、displacement

Duality makes it possible for second/foreign language learning()

A.creative

B.changeable

C.arbitrary

D.duality