Generally it isnt harmful to our ears, when sounds are up to______.A．140 decibelsB．100 dec

Generally it isnt harmful to our ears, when sounds are up to______.

A．140 decibels

B．100 decibels

C．80 decibels

D．160 decibels

请帮忙给出正确答案和分析，谢谢！

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