Bound morphemes include roots and affixes.
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The most important component of a word structure is the affix.
A. 对
B. 错
Inflectional morphemes manifest various grammatical concepts or grammatical categories such as number, tense, degree, and case.
A. 对
B. 错
Open class words can accept new words regularly.
A. 对
B. 错
按临床妇产科计算法,每个孕月按( )天计算。
A. 31
B. 30
C. 28
D. 25