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(二) sound pull can feel eat Doctor: What’s wrong with you Emma: Oh, I have a toothache now....

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The power of music  The harms of noises  The magic of sound  The discovery of infrasonic waves  
it is too small to have a gravitational pull of its own  its pull is so small that we tend to ignore it  its pull disappears in the presence of the earth’s gravitation  it tends to melt and loses its gravitational pull  
It may be harmful to people’s health  It always cheers people up  It is very often difficult to understand  It sounds better when it is loud enough  
of nature is the most beautiful  over 80 decibels is harmful to people  of high intensity benefits animals  in movies is pleasing to the ear  
taste    smells    feel    sound  
as a strong pull as    a pull as strong as    as strong a pull as    as strong pull as  
is very loud  does harm to people’s health  cannot be heard by people  is produced by the hero in movies  
as a strong pull as    a strong pull as    as strong a pull as    strong as a pull as  
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are harmless to people’s health  exist in people’s internal organs  can be used as deadly weapons  can improve eyesight  

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