第3题: [单项选择]______ is a system of arbitrary vocal symbols used for human communication. A. Linguistics B. Syntax C. Morphology D. language 参考答案:D 答案解析:现代语言学家对语言提出了各种不同的定义,其中被语言学家们所一致公认的定义是:Language is a system of arbitrary vocal symbols used for human