·you will hEAr two pEoplE DisCussing point oF purChAsing(pop)projECts.
·For EACh quEstion 23-30 mArk onE lEttErA,B、orC、For thE CorrECt AnswEr.
·AFtEr you hAvE listEnED onCE, rEplAy EACh rECorDing.

why hAs intErEst in pop BEEn slow to DEvElop A．most othEr Forms oF ADvErtising ArE ChEApEr. B．thE DisplAys ArE DiFFiCult to sEt up. C．mAnAgErs nEED to mAkE lArgE initiAl invEstmEnts.