单项选择题

The world's governments have done ______ nothing to combat the threat of nuclear accidents.

A．inherently
B．vitally
C．virtually
D．identically
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单项选择题
The old building is in a good state of ______ except for the wooden floors.
A．observation
B．preservation
C．conservation
D．compensation
单项选择题
Parents often faced the ______ between doing what they felt was good for the development of the child and what they could stand by way of undisciplined noise and destructiveness.
A．junction
B．premise
C．paradox
D．dilemma
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