单项选择题

Scientists are claiming a major ______ in the treatment of cancer and AIDS.

A．distinction
B．breakthrough
C．identification
D．interpretation
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单项选择题
The issue of where the peace talks will be held may seem ______, but to the participants it is very important.
A．trivial
B．miniature
C．minimum
D．minimal
单项选择题
In each case the violation alleged by those attacking minimum wage regulation for women is ______ of freedom of contract.
A．deregulation
B．deterioration
C．deprivation
D．deduction
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