单项选择题


A．central
B．concentrating
C．focusing
D．centering
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单项选择题
A．promotionalB．promissoryC．promiscuousD．prominent
A．promotional
B．promissory
C．promiscuous
D．prominent
单项选择题
A．markingB．remarkingC．markedD．remarked
A．marking
B．remarking
C．marked
D．remarked
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