单项选择题:
Inflectional affixes are those affixes that are attached to the end of words to indicate ______.
A. lexical relationships
B. grammatical relationships
C. functional relationships
D. syntax structure
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答案：B
解析：词缀按照其功能可以分成两类：屈折词缀和派生词缀。屈折词缀是加在词的结尾表示语法关系的词缀，而派生词缀是和其他词素连接，生成新词的词缀。