【单选题】
·you will hEAr jAnEt willis, A mAnAgEmEnt ConsultAnt, ADvisingDAviD smith, A mAnAging DirECtor, ABout using A mArkEting sErviCEs AgEnCy.
·For EACh quEstion (23-30), mArk onE lEttErA,B、orC、For thE CorrECt AnswEr.
·AFtEr you hAvE listEnED onCE, rEplAy thE rECorDing.
whEn nEgotiAting thE ContrACt, shE rECommEnDsA、hAving limitED oBjECtivEs.B、BEing ABlE to ChoosE thE AgEnCy stAFF.C、insisting on pAymEnt By rEsults.