Thebeautyofsoftwareisinitsfunciion,initsinternalsrurcture,andinzhewayinwhichitiscreatedbyateam.Toauser，aprogramwithjusttherightfeaturespresentedthroughanintuitiveand()interfaceisbeautiful.Toasowaredesigner，anintemalsucrethatispartitionedinasimpleandintuitivemanner，andthatminirnízesintemalcouplingisbeautiful.Todevelopersandmanagers，amotivatedtenofdevelopersmakingignificantprogresseveweek，andproducingdefect-freecode，isbeautiful.Thereisbeautyonalltheselevels.Ourworldneedssoftware--10tsofsyearsagosowarewassomethingthatraninafewbigandexpensivemachines.yearsagoitwassomethingthatraninmostcompaniesandindustrialsettings.Nowthereisswarerunninginourcellphones，watches，appliances，automobi1es，toys，andtools.Andneedfornewandbetlersowarenever()Asourcivilizationgrowsandexpands，asdevelopirignationsbuildtheirmasuctures，asdeve10pednationsstriveωachieveevergreaterefficiencies，theneedformoreandmoresoftware()toincrease.Itwouldbeagreatshameif，inallthatsoware，therewasnobeauty.WeknowthatsowarecanbeuglWeknowthatitcanbehardtouse，unreliable，andcarelesslystructured.Weknowthattherearesoftwaresystemswhosetangledandcarelessintemalstructuresmakethemexpensiveanddifficulttochange.Weknowthattherearesowaresystemsthatpresenttheirfeaturesthroughanawkwardandcumbersomeinterface.Weknowthattherearesoftwaresystemsthatcrashandmisbehave.Theseare(请作答此空)systems.Unfortunately，asaprofession，sowaredeveloperstendtocreatemoreuglysystemsthanbeautifulones.Thereisasecretatthebestsofuλraredevelopersknow.Beautyischeaperthanugliness.Beautyisfasterthanugliness.Abeautifulsowaresystemcanbebuiltandmaintainedinlesstime，andforlessmoney，thananuglyone.Novicesowaredevelopersdon'tunderstandis.Theythinkthattheyhavetodoeverythingfastandquick.Theythinkthatbeautyis().No!Bydoingthingsfastandquick，theymakemessesthatmakethesoftwarestiffandhardtounderstand.Beautifulsystemsareflexibleandeasytounderstand.Buildingthemandmaintainingthemisajoy.Itisuglinessthatisimpractical.Uglinesswillslowyoudownandmakeyoursoftwareexpensiveandbrittle.Beautifulsystemscosttheleasttobuildandmaintain，andaredeliveredsoonest.
A.practical B.useful C.beautiful D.Ugly正确答案D
