Insomesciencefictionmoviesevilrobotsrefusetodienomatterhowhardpeoplefightback.Nowsciencefictionhasbecomesciencefact.Forthefirsttimescientistshavemadearobotthatcantakeabeatingandkeepongo

　　Insomesciencefictionmoviesevilrobotsrefusetodienomatterhowhardpeoplefightback.

　　Nowsciencefictionhasbecomesciencefact.Forthefirsttimescientistshavemadearobotthatcantakeabeatingandkeepongoing.ScientistsfromCornellUniversitymadetherobotwhichlookslikeaspiderwithfourlegs.

　　Untilnoweventhemostadvanced(先进的)robotwasalmostcertaintobreakdownwhenitwasdamaged(毁坏).Thatisbecauseitscomputerinsidesimplydoesn’tknowhowtomakethemachineworkafteritsshapehaschanged.

　　Todealwiththisproblemthescientistsputeightmotors(发动机)andtwosensors(传感器)thatreadhowthemachineisworking.Theyallgivesignalstothemachine’ssoftware.Usingthisinformationthecomputercanthenfigureoutthemachine’sshapeatanymoment.

　　Thenewtechnologyisabigadvanceinrobot-makingscientistssayandit’sfarfromscary.Itmaysomedayhelpscientistscreatebetterartificial(假的)armsandlegsandgivenewfreedomtopeoplewholosethem.Itmightalsohelpscientistsunderstandhowpeopleandanimalsfigureouttheirownsenseofplaceinspace.

　　“Ithasbeendifficulttodesignrobotsthatcanworkwellwhentheenvironmentchangesorwhenit’sdamaged”saysOlafSpornsofIndianaUniversityinUS.“Withthisworkwearenearertosolvingthisproblem.”

　　1.Whydorobotseasilybreakdownwhentheyaredamaged?

　　A．Theycannotrepairthemselves.

　　B．Thecomputerhaschangedalot.

　　C．Theyhavenocomputersinside.

　　D．Thecomputercannotworkiftherobotchanges.

　　2.Thenewtechnology(技术)allowstherobotto .

　　A．keepworkingafterbeingdamaged

　　B．tellpeoplewhereitis

　　C．dohouseworkforhumans

　　D．rememberalotofinformation

　　3.Theunderlinedword“them”inParagraph5refersto .

　　A．sensors B．robots C．scientists D．armsandlegs

　　4.Howdothesensorsintherobotwork?

　　A．Theycanreplacethecomputerwhenit’sbroken.

　　B．Theyhelpthecomputerlearntherobot’scondition.

　　C．Theycanfindoutwherethedamagecomesfrom.

　　D．Theycansendsignalstothepersonwhousestherobot.