单项选择题


A．prevents
B．produces
C．provides
D．predicts
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单项选择题
A．dominantlyB．increasinglyC．heavilyD．seriously
A．dominantly
B．increasingly
C．heavily
D．seriously
单项选择题
A．recallB．recommendC．reckonD．recognize
A．recall
B．recommend
C．reckon
D．recognize
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