单项选择题

The results of the experiments were ______and they will have to be done again.

A．comprehensive
B．alternative
C．deliberate
D．ambiguous
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单项选择题
Debates within the social sciences have______ an intellectual space which has.
A．constrained
B．occupied
C．dominated
D．restricted
单项选择题
We must express our views clearly to prevent media______ and public confusion.
A．disturbance
B．setback
C．controversy
D．distortion
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