单项选择题

According to the conversation, what is one problem with arm exericse

A．They don’t get rid of flabby arms.
B．They can damage arm muscles.
C．They aren’t acceptable to most people.
D．They can raise one’s blood pressure.
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单项选择题
It is clear from the passage that the cotton industry __
A．is not taking any action
B．is imposing safety standards
C．is looking for sources of dust
D．does not believe that the dust constitutes a hazard
单项选择题
The passage focuses on _______.
A．promotions
B．job motivation
C．"promote from within" policy
D．organizational strategy
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