单项选择题
A historical study of language is a （）study of language.
A.synchronic B.diachronic C.prescriptive D.comparative
单项选择题 In modern linguistics, speech is regarded as more basic than writing, because （）
单项选择题 Modern linguistics regards the written language as （）
单项选择题 Which of the following is not a design feature of human language?（）
