DirECtions: in this sECtion, you will hEAr 3 short pAssAgEs.At thE EnD oF EACh pAssAgE, you will hEAr somE quEstions.Both thE pAssAgE AnD thE quEstions will BE spokEn only onCEAFtEr you hEAr A quEstion, you must ChoosE thE BEst AnswEr From thE Four ChoiCEs mArkEDA、,B、,C、AnDD、. thEn mArk thE CorrEsponDing lEttEr on AnswEr shEEt 2 with A singlE linE through thE CEntrE.

why DiD niCk AnDDoug FAil to movE up thE piAno to thE housEA．thE Floor is sliCk.
B．thE stAirCAsE is tiltED、
C．thE pAssAgE is nArrow.
D．thE trEAD is unstEADy.