问题

In traffic lights, red can only mean stop. But in human languages, limited phonemes can fo

In traffic lights, red can only mean stop. But in human languages, limited phonemes can form. numerous words which can form. unlimited sentences. This is a good illustration of the______feature of language.

A．duality

B．displacement

C．arbitrariness

D．productivity

请帮忙给出正确答案和分析，谢谢！

参考答案

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