Aboy,whowasnervousonhisfirstdayofschool,climbedontoathi...
问题详情：Aboy,whowasnervousonhisfirstdayofschool,climbedontoathird-floorbalcony(阳台)andputlegsovertheside.Hismotherandteacherstriedtheirbesttobringhimdown,butfailed.However,afirefighter(消防员)whodres...