Some morphemes are realized by more than one morph according to

Some morphemes are realized by more than one morph according to their position in a word. Such alternative morphs are known as（ ）.
A、allomorphs
B、affixes
C、bound morphemes
D、prefixes
【正确答案】：A
【题目解析】：本题考查词素变体。Some morphemes are realized by more than one morph according to their position in a word. Such alternative morphs are known as allomorphs。有些词素根据它们在词中的位置不同可由一个以上的不同形素实现，这些不同形素叫词素变体。B选项affixes“词缀”；C选项bound morphemes“粘附词素”；D选项prefixes“前缀法”。故本题选A。