listEning 2 "EnvironmEntAl sCiEnCEClAss" {$mEDiAurl} why DoEs thE proFEssor sAy this: A、hE is DisAgrEEing with thE FigurEs. B、hE is ExprEssing surprisE At thE stAtistiCs, C、hE is CorrECting A prEvious stAtEmEnt. D、hE is trying to mAintAin thE stuDEnts’ intErEst.