单项选择题
A.root B.affix C.stem D.morpheme
（）morphemes are those that cannot be used independently...
单项选择题（）morphemes are those that cannot be used independently but have to be combined with other morphemes, either free or bound, to form a word.
A.Free B.Bound C.Root D.Affix
Language is arbitrary in that there is no logical conne...
单项选择题Language is arbitrary in that there is no logical connection between meanings and（）.
A.words B.sounds C.objects D.ideas
According to F. de Saussure,（）refers to the abstract li...
单项选择题According to F. de Saussure,（）refers to the abstract linguistic system shared by all the members of a speech community.
A.parole B.performance C.langue D.language
