Language is a system of a（）vocal symbols used for human communication.

In the study of linguistics, hypotheses formed should be based on language facts and checked against the observed facts.

The discipline that studies the rules governing the formation of words into permissible sentences in languages is called s（）

Linguistics is generally defined as the s（）study of language.

Human capacity for language has a g（）basis, but the details of language have to be taught and learned.

A diachronic study of language is the description of language at some point in time.

Morphology

General linguistics is generally the study of language as a whole.

Findings in linguistic studies can often be applied to the settlement of some practical problems. The study of such applications is generally known as a（）linguistics.

Modern linguistics is different from traditional grammar.