The duality of a dual problem is not necessarily the primal problem. ( ）

By Duality is meant the property of having two levels of structures.

________ is NOT a design feature of language. A: Arbitrariness B: reativity C: Communicability D: Duality

1. what's the design feature that ... A: arbitrary B: duality C: creativity D: displacement

Which is not the design feature of language? A: Cultural transmission B: Duality C: Creativity D: Replacement

Which of the following is not a design feature of human language?（） A: Arbitrariness B: Displacement C: Duality D: Meaningfulne

Which of the following is not a design feature of human language？ （ ）。 A: Meaningfulness B: Duality C: Displacement D: Arbitrariness

Which one of the following is not a design feature of language? A: arbitrariness B: displacement C: system D: duality

Which of the following is NOT a frequently discussed design feature? A: Arbitrariness B: Convention C: Duality D: Displacement

Which of the following are design features of human language? （ ） A: arbitrariness B: duality C: diachronicity D: displacement