The chief function of （）is not to change the word class of the stem, but to change its meaning.
The chief function of （）is not to change the word class of the stem, but to change its meaning.
A、prefixes
B、suffixes
C、morphemes
D、​varieties
【正确答案】：A
【题目解析】：前缀的主要功能不是改变词干的词类，而是改变它的意义。
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