[简答]  完形填空：选择正确答案，补全文章（每题10分）。　　Customerserviceistheserviceorcarethataconsumerreceivesbefore,duringandafterapurchase.It'soneofthefactorsthatcomeintoplaywhenaconsumerisdeterminingbuyingvalue,theotheristhequalityoftheproductorservicethatisbeing .　　Consumersoftenmustencounteranexperiencetonotonlybeasatisfiedcustomer,butaloyalcustomer.Customerserviceisapartofthatexperience.　　Topnotchservicewillcreate andareturningcustomer,whichiswhatweallmuststrivefor.　　Excellentcustomerserviceis tobusinessestoday.It'sacomponentthatisoftenmissing,unfortunately.Howdoyouprovidegreatcustomerservice?Alwaysmakeyourcustomera .Greettheminafriendlymanner,whetherthatbeviatelephone,emailorinperson.Letthemknowyouaretheretohelpandthatyouwilltakecareofthem,notonlybeforethesalebutafteraswell.Afterall,inathrivingbusinesscustomersarenot ;it'sarequirementforbusinessestosurvive.　　选自：http://marketing.about.com/od/plantutorialsandsamples/a/What-Is-Customer-Service.htm