![Noisepollutionisdoingmuchharmtoourhealthnow．Noiseisa...]( "Noisepollutionisdoingmuchharmtoourhealthnow．Noiseisa...")
- 問題詳情： Noisepollutionisdoingmuchharmtoourhealthnow．Noiseisakindofinvisible(無形的)killer．Moreandmorestudentsenjoylisteningtomusicverymuch．WhentheylistentoMP3players，theyliketoturnupthevolume(音量)．WhilewatchingTV，theykeepthevolumeup．Buttheyhaven’tre...
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