牙列缺失是临床的一种常见病、多发病，多见于________。
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“En-” in “enrich” is a(n) ________________.
A. derivational affix
B. inflectional affix
C. free root
D. bound root
The base form of a word that cannot further be analyzed without total loss of identity is called a___________.
A. root
B. stem
C. morpheme
D. affix
Which of the following statement is FALSE?
A. The phrase the love of God is ambiguous.
B. The affix –ness is derivational.
C. A morpheme shape donates one and only one meaning.
D. Roots might be bound or free.
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