单项选择题


A．to try
B．trying
C．to be tried
D．to be trying
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单项选择题
A．butB．henceC．howeverD．whereas
A．but
B．hence
C．however
D．whereas
单项选择题
A．discreditedB．disputedC．disagreedD．disapproved
A．discredited
B．disputed
C．disagreed
D．disapproved
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