单项选择题

Success in diving requires not only skill and balance but also ______ alterness and concentration.

A．mental
B．manual
C．nervous
D．masculine
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单项选择题
The doctors came to the conclusion that the patient's blindness was ______.
A．contemporary
B．temperate
C．consistent
D．temporary
单项选择题
Tom's left hand was seriously injured, and he would be ______ for work for several weeks at least.
A．unhealthy
B．fierce
C．unfit
D．qualified
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