listEning 3 "gEologyClAss" {$mEDiAurl} whAt DoEs thE proFEssor wAnt thE stuDEnts to Do in this ClAss sEssion A、listEn CArEFully AnD tAkE notEs B、Bring in AltErnAtivE iDEAs to prEsEnt C、Ask quEstions AnD DrAw ConClusions D、prEpArE For A quiz At thE EnD