The smallest meaningful unit of language is（）.

（）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

点击查看答案&解析

Language is arbitrary in that there is no logical connection between meanings and（）.

A.words
B.sounds
C.objects
D.ideas

点击查看答案&解析