单项选择题
A.neurons B.nerve system C.nerves D.cerebral cortex
（）refers to a word or expression that is prohibited by ...
单项选择题（）refers to a word or expression that is prohibited by the “polite” society from general use.
A.Linguistic taboo B.Euphemism C.Address term D.Slang
The smallest meaningful unit of language is（）.A.rootB.a...
单项选择题The smallest meaningful unit of language is（）.
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
