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填空題

D（）is one of the design features of human language which refers to the phenomenon that language consists of two levels: a lower level of meaningless individual sounds and a higher level of meaningful units.

答案： Duality

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Langue refers to the a（）linguistic system shared by all the members of a speech community while the parole is the concrete use of the conventions and application of the rules.

答案： abstract

Chomsky defines “competence” as the ideal user’s k（）of the rules of his language.

答案： knowledge

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