单项选择题
The words that contain only one morpheme are called ______.
A．hound morphemes
B．affixes
C．free morphemes
D．roots
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单项选择题
New Deal was the program of social and economic reforms introduced by President ______.
A．L. B. Johnson
B．Franklin. D. Roosevelt
C．Eisenhower
D．Gerald R. Ford
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off→off。
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