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

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

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

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.

Morphology studies how words can be formed to produce meaningful sentences.

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.

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

Phonetics is different from phonology in that the latter studies the combinations of the sounds to convey meaning in communication.

Sociolinguistics is the study of language in relation to society.

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