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Test4OneeveningRobertwasonhiswayhomefromtherailwaystation.Whenheturnedrounda__1__heheardfootstepsbehindhimandhethought__2__wascomingnear.Hebegantowalk__3__.Thefootstepsbecamefaster,too.Hesloweddown.Thefootstepsalso__4__down.Nowhewas__5__thathewasbeingfollowed.Hetriedtohide.__6__thestepsfollowedhim.Hedidn’tknow__7__tosavehimself，sohejumpedoverafenceandfound__8__inacemetery，throwinghimselfdownononeofthetombs.Theman__9__followed.Robertcouldhearthemanjumpover__10__.Thoughtsofthievesormurderersfilledhis__11__.Robertstoodupand__12__themanwhowas__13__him.“Whatdoyouwant？”heasked.“__14__areyoufollowingme？”“Isay，”askedthestrangers.“Doyou__15__gohomelikethis，__16__areyoutakingsomespecialexercise__17__？IwanttogototheMr.Brown’sanddon’tknow__18__.Thestationmastertoldmetofollowyouasyou__19__nextdoor.__20__meforasking，butistheremuchtogobeforewegetthere？”1．A.cornerB．parkC．streetD．way2．A.nooneB．someoneC．anyoneD．everyone3．A.slowlyB．moreslowlyC．fastD．faster4．A.putB．slowedC．becameD．turned5．A.sorryB．gladC．afraidD．sure6．A.StillB．SometimesC．OftenD．Seldom7．A.whenB．whereC．whyD．how8．A.himB．himselfC．themanD．thethief9．A.aheadB．behindC．nearbyD．beside10．A.abridgeB．awallC．theyardD．thefence11．A.headB．heartC．mindD．brains12．A.facedB．beatC．hitD．told13．A.stealingB．robbingC．followingD．meeting14．A.WhatB．WhyC．HowD．When15．A.neverB．alwaysC．hardlyD．seldom16．A.andB．orC．soD．but17．A.everynightB．atnightC．atthenightD．tonight18．A.himB．thehouseC．thewayD．thepartner19．A.workB．playC．studyD．live20．A.AnswerB．ShowC．TellD．ExcuseImagineyou’reatapartyfullofstrangers.You’renervous.Whoarethesepeople？Howdoyoustartaconversation？Fortunately,you’vegotathingthatsendsoutenergyattinychipsineveryone’snametag(标签)．Thechipssendbackname，job，hobbies，andthetimeavailableformeeting—whatever.Makingnewfriendsbecomessimple.Thishasn’tquitehappenedinreallife.ButtheworldisalreadyexperiencingarevolutionusingRFIDtechnology.ARFIDtagwithatinychipcanbefixedinaproduct，underyourpet’sskin，evenunderyourownskin.PassiveRFIDtagshavenoenergysourcebatteriesbecausetheydonotneedit.Theenergycomesfromthereader，ascanningdevice，thatsendsoutenergy(forexample，radiowaves)thatstartsupthetagimmediately.Suchatagcarriesinformationspecifictothatobject,andthedatacanbeupdated.Already，RFIDtechnologyisusedforrecognizingeachcarortruckontheroadanditmightappearinyourpassport.Doctorscanputatinychipundertheskinthatwillhelplocateandobtainapatient’smedicalrecords.AtanightclubinParisorinNewYorkthesamechipgetsyouintotheVIP(veryimportantperson)sectionandpaysforthebillwiththewaveofanarm.Takeastepback：10or12yearsago,youwouldhaveheardaboutthecomingageofcomputing.Oneexamplealwaysseemedtosurface：Yourrefrigeratorwouldknowwhenyouneededtobuymoremilk.Theconceptwasthatcomputerchipscouldbeputeverywhereandsendinformationinasmartnetworkthatwouldmakeordinarylifesimpler.RFIDtagsareasmallpartofthisphenomenon.“Theworldisgoingtobealooselycoupledsetofindividualsmalldevices，connectedwirelessly，”predictsDr.J.Reich.Humanrightsupportersarenervousaboutthepossibilitiesofsuchtechnology.ItgoestoofartrackingschoolkidsthroughRFIDtags,theysay.Weimagineaworldinwhichabeercompanycouldfindoutnotonlywhenyouboughtabeerbutalsowhenyoudrankit.Andhowmanybeers.Accompaniedbyhowmanybiscuits.WhenMarconiinvente...