Fornearlytenyears,theUnifiedModelingLanguage(UML)hasbeentheindus

Fornearlytenyears,theUnifiedModelingLanguage(UML)hasbeentheindustrystandardforvisualizing,specifying,constructing,anddocumentingthe(1)ofasoftware-intensivesystem.Asthe(2)standardmodelinglanguage,theUMLfacilitatescommunicationandreducesconfusionamongproject(3).TherecentstandardizationofUML2.0hasfurtherextendedthelanguage'sscopeandviability.Itsinherentexpressivenessallowsusersto(4)everythingfromenterpriseinformationsystemsanddistributedWeb-basedapplicationstoreal-timeembeddedsystems.TheUMLisnotlimitedtomodelingsoftware.Infact,itisexpressiveenoughtomodel(5)systems,suchasworkflowinthelegalsystem,thestructureandbehaviorofapatienthealthcaresystem,softwareengineeringinaircraftcombatsystems,andthedesignofhardware.TounderstandtheUML,youneedtoformaconceptualmodelofthelanguage,andthisrequireslearningthreemajorelements:theUML'sbasicbuildingblocks,therulesthatdictatehowthosebuildingblocksmaybeputtogether,andsomecommonmechanismsthatapplythroughouttheUML. (2)____

A.real

B.legal

C.de facto

D.illegal

正确答案是C