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
单项选择题 The smallest meaningful unit of language is（）.
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.
单项选择题 Language is arbitrary in that there is no logical connection between meanings and（）.
