Fromthesociolinguisticperspective,aspeechvarietyisnomorethanadialectalvarietyofalanguage.
1、正確正確
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Thisisanimportantproblem_______toofewsocialscientistshaveresearched.
Thesyntacticrulesofanylanguageare______innumber.
Alinguistictheoryisconstructedaboutwhat______isandhowitworks.
Youngerchildrenarecurious________howthingswork，andmanyofthemwanttotakeaparteverythingwithintheirreach.
Theengineer______myfatherworksisabout50yearsold.
