ExtremeProgramming(XP)isadisciplineofsoftwaredevelopmentwith___1___ofsimplicity,communication,feedbackandcourage.Successfulsoftwaredevelopmentisateameffort-notjustthedevelopmentteam,butthelargerteamconsistingofcustomer,managementanddevelopers.XPisasimpleprocessthatbringsthesepeopletogetherandhelpsthemtosucceedtogether.XPisaimedprimarilyatobject-orientedprojectsusingteamsofadozenorfewerprogrammersinonelocation.TheprinciplesofXPapplytoany__2____projectthatneedstodeliverqualitysoftwarerapidlyandflexibly.AnXPprojectneedsa(an)___3__customertoprovideguidance.Customers,programmers,managers,areallworking___4__tobuildthesystemthat'sneede D．Customers-thosewhohavesoftwarethatneedstobedeveloped-willlearnsimple,effectivewaysto___5___whattheyneed,tobesurethattheyaregettingwhattheyneed,andtosteertheprojecttosuccess. 1、____
A.importance
B.keys
C.roles
D.values
正确答案是D