单项选择题


A．intentional
B．deadly
C．dangerous
D．harmful
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单项选择题
A．personalB．privateC．secretD．state
A．personal
B．private
C．secret
D．state
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
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