选择题:人类语言区别于动物信号系统最根本的特征是( )。

题目内容:

人类语言区别于动物信号系统最根本的特征是( )。

A.超越时空的能力

B.无限灵活性

C.发音经济性

D.巨大能动性和创造性

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答案解析:

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