whAt CAn BE inFErrED ABout stuDEnt
A、
A、hE triEs to summArizE whAt thE proFEssor hAs sAiD、
B、hE triEs to ExprEss his own opinion.
C、hE rAisEs A quEstion on thE topiC、
D、hE BEComEs quitE ConFusED on thE topi