Intoday'sworld,almosteveryoneknowsthatairpollutionandwa...
問題詳情：Intoday'sworld,almosteveryoneknowsthatairpollutionandwaterpollutionareharmfultopeople'shealth.However,notallthepersonsknowthatnoiseisalsoakindofpollution,andthatisharmfultohumanhealth,too. ...