______ moves on a scale of the national language, dialects, and individual ways of communication.
A、LanguagechangeC
言語的變異總是以國語、方言以及不同的個體交際語言等形式來進行。從社會語言學的角度來看，一種言語變體無非是一種語言的方言變體而已。
Thereisagrowingbodyofevidencetosupportthefactthatmostpeoplesufferfromalackofdaydreaming_______anexcessofit.
Thisisanimportantproblem_______toofewsocialscientistshaveresearched.
Fromthesociolinguisticperspective,aspeechvarietyisnomorethanadialectalvarietyofalanguage.
The engineer ______ my father works is about 50 years old.
Itwasasmallplacethencomparedto_______itisnow.
