单项选择题


A．forms
B．existence
C．contents
D．purpose
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单项选择题
A．detailsB．speechesC．lecturesD．communications
A．details
B．speeches
C．lectures
D．communications
单项选择题
A．measuresB．measuredC．is measuredD．was measured
A．measures
B．measured
C．is measured
D．was measured
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