2021年6月英语六级考试真题试卷附答案(完整版-第3套).docx

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2021年6月英语六级考试真题试卷附答案(完整版第3套)

PartIWriting(30minutes)Directions:Forthispart,youareallowed30minutestowriteanessayontheimportanceofmotivationandmethodsinlearning.Youshouldwriteatleast150wordsbutnomorethan200words.____________________________________________________________________________________________________________PartIIListeningComprehension(30minutes)说明：由于2021年6月六级考试全国共考了两套听力，本套真题听力与前2套内容相同，只是选项顺序不同，因此在本套真题中不再重复出现。PartIIIReadingComprehension(40minutes)SectionADirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.Steelisvaluedforitsreliability,butnotwhenitgetscold.Mostformsofsteel__26__becomebrittle（脆的）attemperaturesbelowabout-25℃unlesstheyaremixedwithothermetals.Now,though,anoveltypeofsteelhasbeendevelopedthatresists__27__atmuchlowertemperatures,whileretainingitsstrengthandtoughness—withouttheneedforexpensive__28__.Steel'sfragilityatlowtemperaturesfirstbecameamajorconcernduringtheSecondWorldWar.AfterGermanU-boatstorpedoed（用鱼雷攻击）numerousBritishships,a2,700-strongfleetofcheap-and-cheerful"Libertyships"wasintroducedtoreplacethelostvessels,providingalifelineforthe__29__British.Butthesteelshellsofhundredsoftheships__30__intheicynorthAtlantic,and12brokeinhalfandsank.Brittlenessremainsaproblemwhenbuildingsteelstructuresincoldconditions,suchasoilrigsintheArctic.Soscientistshave__31__tofindasolutionbymixingitwithexpensivemetalssuchasnickel.YuujiKimuraandcolleaguesinJapantriedamorephysical__32__.Ratherthanaddingothermetals,theydevelopedacomplexmechanicalprocessinvolvingrepeatedheatingandveryseveremechanicaldeformation,knownastempforming.Theresultingsteelappearstoachieveacombinationofstrengthandto