单项选择题

A．The heart disease.
B．Cancer.
C．Accidents.
D．Medical Accidents.
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单项选择题
A．Providing a warning light when the sound is too loud.B．Producing more personal stereo systems.C．Restricting the use of personal stereos.D．Setting up a standardized hearing test.
A．Providing a warning light when the sound is too loud.
B．Producing more personal stereo systems.
C．Restricting the use of personal stereos.
D．Setting up a standardized hearing test.
单项选择题
A．Tom is very responsible.B．Tom’s words aren’t reliable.C．What Tom said is true.D．Tom is not humorous at all.
A．Tom is very responsible.
B．Tom’s words aren’t reliable.
C．What Tom said is true.
D．Tom is not humorous at all.
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