单项选择题

According to the first paragraph, noise is______.

A．inseparable from leisure
B．inseparable from by-product
C．inseparable from working hours
D．inseparable from the advance of our life
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单项选择题
The best way to solve the noise problem is to______.
A．stop using machines
B．make vehicles soundless
C．put something~ in your ears
D．prevent it from reaching human ears
单项选择题
Domestic noises may perhaps be controlled by______.
A．good planning and technical improvement
B．preventing fast motorcycles and heavy lorries from passing through residential districts
C．being considerate and polite
D．signing international agreements on the noise control measures
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