A.synchronic B.diachronic C.prescriptive D.comparative
A.sense B.sounds C.objects D.ideas
A.parole B.performance C.langue D.Language
A.primary B.correct C.secondary D.stable
A.in linguistic evolution, speech is prior to writing B.speech plays a greater role than writing in terms of the amount of information conveyed C.speech is always the way in which every native speaker acquires his mother tongue D.All of the above