ACCorDing to thE proFEssor, whiCh ArE truE ExprEssions For voCABulAry lEArning [Clink on 2 AnswErs.] A、voCABulAry lEArning is not so ComplEx As most pEoplE think. B、English lEArnErs shoulD nEvEr stop lEArning nEw voCABulAry. C、English lEArnErs shoulD try to usE spECiAlizED worDs in DAily liFE. D、lEArning DiFFErEnCEs BEtwEEn worDs ArE A proBlEm-solving proCEss.