quEstion 23-26

A、jApAnEsE stuDEnts stuDy muCh hArDEr thAnColumBiAn stuDEnts.
B、ColumBiAn stuDEnts sCorE highEr thAn jApAnEsE stuDEnts in mAths.
C、ColumBiAn stuDEnts ArE morE optimistiC ABout thEir mAths skills.
D、jApAnEsE stuDEnts hAvE BEttEr ConDitions For stuDy.