wE CAn lEArn From thE pAssAgE thAt thosE At thE ComputEr CEntEr in thE miDDlE oF thE night ArE ______.
A．stuDEnts working on A progrAm thEy hAvE to ComplEtE BEForE DAwn
B．stuDEnts using ComputErs to AmusE thEmsElvEs
C．hArD-working ComputEr sCiEnCE mAjors
D．stuDEnts DEEply FAsCinAtED By thE ComputEr