【Insomesciencefictionmovies,evilrobotsrefusetodie,nomatterhowhardpeoplefightback.Nowsciencefictionhasbecomesciencefact.Forthefirsttime,scientistshavemadearobotthatcantakeabeatingandkeepongoing.Scientists】

　　Insomesciencefictionmovies,evilrobotsrefusetodie,nomatterhowhardpeoplefightback.

　　Nowsciencefictionhasbecomesciencefact.Forthefirsttime,scientistshavemadearobotthatcantakeabeatingandkeepongoing.ScientistsfromCornellUniversitymadetherobot,whichlookslikeaspiderwithfourlegs.

　　Untilnow,eventhemostadvanced(先进的)robotwasalmostcertaintobreakdownwhenitwasdamaged(毁坏).Thatisbecauseitscomputerinsidesimplydoesn’tknowhowtomakethemachineworkafteritsshapehaschanged.

　　Todealwiththisproblem,thescientistsputeightmotors(发动机)andtwosensors(传感器)thatreadhowthemachineisworking.Theyallgivesignalstothemachine’ssoftware.Usingthisinformation,thecomputercanthenfigureoutthemachine’sshapeatanymoment.

　　Thenewtechnologyisabigadvanceinrobot-making,scientistssay,andit’sfarfromscary.Itmaysomedayhelpscientistscreatebetterartificial(假的)armsandlegsandgivenewfreedomtopeoplewholosethem.Itmightalsohelpscientistsunderstandhowpeopleandanimalsfigureouttheirownsenseofplaceinspace.

　　“Ithasbeendifficulttodesignrobotsthatcanworkwellwhentheenvironmentchangesorwhenit’sdamaged,”saysOlafSpornsofIndianaUniversityinUS.“Withthiswork,wearenearertosolvingthisproblem.”

　　小题1:Whydorobotseasilybreakdownwhentheyaredamaged?A．Theycannotrepairthemselves.B．Thecomputerhaschangedalot.C．Theyhavenocomputersinside.D．Thecomputercannotworkiftherobotchanges.小题2:Thenewtechnology(技术)allowstherobotto .A．keepworkingafterbeingdamagedB．tellpeoplewhereitisC．dohouseworkforhumansD．rememberalotofinformation小题3:Theunderlinedword“them”inParagraph5refersto .A．sensorsB．robotsC．scientistsD．armsandlegs小题4:Howdothesensorsintherobotwork?A．Theycanreplacethecomputerwhenit’sbroken.B．Theyhelpthecomputerlearnthe