Insomesciencefictionmoviesevilrobotsrefusetodienomatterhowhardpeoplefightback.Nowsciencefictionhasbecomesciencefact.Forthefirsttimescientistshavemadearobotthatcantakeabeating(挨打)

　　Insomesciencefictionmoviesevilrobotsrefusetodienomatterhowhardpeoplefightback.

　　Nowsciencefictionhasbecomesciencefact.Forthefirsttimescientistshavemadearobotthatcantakeabeating(挨打)andkeepongoing.ScientistsfromCornellUniversitymadetherobotwhichlookslikeaspiderwithfourlegs.

　　Untilnoweventhemostadvanced(先进的)robotwasalmostcertaintobreakdownwhenitwasdamaged.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.Thenewtechnologyallowstherobotto_________.

　　A.dohouseworkforhumans

　　B.keepworkingafterbeingdamaged

　　C.rememberalotofinformation

　　D.tellpeoplewhereitis

　　3.Theunderlinedword“them”inParagraph5refersto________.

　　A.sensorsB.robots

　　C.armsandlegsD.scientists

　　4.Howdothesensorsintherobotwork?

　　A.Theycanreplacethecomputerwhenit’sbroken.

　　B.Theycanfindoutwherethedamagecomesfrom.

　　C.Theyhelpthecomputerlearntherobot’scondition.

　　D.Theycansendsignalstothepersonwhousestherobot.