ShanghaiNo.8MiddleSchoolbegantousethenewbellthisterm...
問題詳情： ShanghaiNo.8MiddleSchoolbegantousethenewbellthisterm.Ithelpsteachersrememberitisbreaktime.Thenewbellhasthreefirstpartlasts15ismadeupoflovelyfolkmusic.Next,thereare20secondsoffinal25-seco...