2. 外语
  3. ______ is a design feature of human language that enables speakers to talk about a wide range of things, free from barriers caus

______ is a design feature of human language that enables speakers to talk about a wide range of things, free from barriers caus

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问题 ______ is a design feature of human language that enables speakers to talk about a wide range of things, free from barriers caused by separation in time and space.
选项 A、Displacement
B、Arbitrariness
C、Duality
D、Productivity
答案D
解析 语言的普遍特征(Design features)包括以下几个：语言是任意的(arbitrariness)，语言具有双层结构 (duality)，语言是多产的(productivity)，语言是移位的(displacement)，语言不是天生的、是靠文化传播的(cultural transmission)。其中，语言的多产性(Productivity)是指语言的使用者可以理解并创造无限数量的新句子，这是人类语言双层结构的特点所造成的结果。
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