单项选择题

All experts agree that the most important consideration with diet drugs is carefully______ the risks and benefits.

A．weighing
B．valuing
C．evaluating
D．distinguishing
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单项选择题
A．mainstreamB．majorC．minorD．main
A．mainstream
B．major
C．minor
D．main
单项选择题
A．amongB．inC．byD．between
A．among
B．in
C．by
D．between
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