listEning 3 "philosophyClAss"
{$mEDiAurl}

whAt DoEs thE proFEssor mEAn whEn shE sAys this:
A、shE is ExprEssing strong AgrEEmEnt.
B、shE is introDuCing DouBt.
C、shE is mAintAining A nEutrAl position.
D、shE is Asking thE stuDEnts to AgrEE.