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请在第____处填上正确答案。A. High sound of 150 decibels can kill a healthy rat.B. The vibr
请在第____处填上正确答案。
A. High sound of 150 decibels can kill a healthy rat.
B. The vibration of air can produce infrasonic waves.
C. We cannot play high—pitched music with ordinary musical instruments.
D. If the intensity of infrasonic wave exceeds 160 decibels,it is extremely harmful.
E. Dolphins,whales and bats can make such high—frequency sound.
F. Therefore,the sound of Ordinary music alinstruments cannot harm your health.
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