listEning 2 "gEologyClAss" {$mEDiAurl} whAt DoEs thE proFEssor imply whEn hE sAys this: A、thE tEst quEstions will BE vEry DiFFiCult. B、thE stuDEnts shoulD rEAD thEir tExtBooks BEForE thE tEst. C、thE BAsiC pAttErns From thE notEs will BE on thE tEst. D、thE tEst will inFluEnCE thE FinAl grADE.