单项选择题

Many scientists have been probing psychological problems,

A．solving
B．exploring
C．settling
D．handling
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单项选择题
He will consolidate his power.
A．strengthen
B．win
C．abandon
D．unite
单项选择题
In Britain and many other countries appraisal is now a tool of management.
A．evaluation
B．production
C．efficiency
D．publicity
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