listEning 3 "gEologyClAss"
{$mEDiAurl}
why DoEs thE proFEssor sAy this:
A、As EnCourAgEmEnt For A morE ComplEtE AnswEr
B、BECAusE hE DoEsn’t unDErstAnD thE stuDEnt’s AnswEr
C、to givE AnothEr stuDEnt An opportunity to spEAk
D、For positivE rEinForCEmEnt oF A CorrECt AnswEr