whEn ApplE showED thE worlD siri, i BEliEvE thEy showED us thE nExt mAjor【C1】______usEr 【C2】______ thE iDEA oF tAlking to ComputErs is nothing nEw. it hAs, oF CoursE, BEEn【C3】______in sCiFi novEls, moviEs AnD tv shows For yEArs now.【C4】______soFtwArE itsElF hAs shown shADEs oF voiCE input【C5】______thE nExt usEr input For ovEr 10 yEArs. thE ChAllEngE hAD AlwAys BEEn Bringing it to thE【C6】______mArkEt. this is whAt ApplE plAns to Do with siri on thE iphonE 4s. this tEChnology hAs BEEn in DEvElopmEnt For quitE A whilE AnD is gEtting【C7】______BEttEr.【C8】______Bringing it to thE mAss mArkEt, AnothEr ChAllEngE hAs BEEn mAking it usEFul By【C9】______simplE DiCtAtion. onE oF thE most【C10】______ElEmEnts oF siri is not just thE ABility to Do voiCE-to-tExt DiCtAtion, But its ABility to turn nAturAl-lAnguAgE【C11】______into ACtion. whAt i mEAn By thAt is thAt i CAn usE my voiCE to sAy, '【C12】______mE to FEED my goAts whEn i gEt homE.' BECAusE siri is trAinED to know whErE my housE is AnD thE iphonE 4s hAs gps, thE【C13】______i DrivE into my DrivEwAy, i gEt A rEminDEr thAt tElls mE to FEED thE goAts. i livE on A FArm AnD this is quitE【C14】______For mE. its A vAluABlE【C15】______to BE ABlE to usE voiCE CommAnDs to CrEAtE CAlEnDAr itEms, sEArCh thE wEB, gEt【C16】______inFormAtion likE how mAny FEEt ArE in A milE, sEArCh loCAl inFormAtion, sEt AlArms, 【C17】______thE wEAthEr, AnD muCh morE. this CAn BE DonE【C18】______siri is tiED to somE vEry powErFul DAtABAsEs AnD, through its Ai AnD voiCE ComprEhEnsion tEChnology, CAn【C19】______somE AmAzingly ACCurAtE inFormAtion thAt hAs AlrEADy provEn hElpFul to mE AnD mAny【C20】______hAvE usED this tEChnology.
【C1】
A．mAn-to-mAn
B．mAn-to-mAChinE
C．mAChinE-to-mAChinE
D．mAChinE-to-mAn