2017年12月大学英语四级真题试题二(完整版)

第1页共11页2017年12月大学英语四级真题试题二(完整版)PartIWriting(25minutes)(请于正式开考后半小时内完成该部分，之后将进行听力考试)Directions:Forthispart,youareallowed30minutestowriteanashorteasyonhowtobesthandletherelationshipparentsandchildren.Youshouldwriteatleast120wordsbutnomorethan180words.PartIIListeningComprehension(30minutes)说明：2017年12月大学英语四级考试全国共考了两套听力.本套的听力内容与第二套相同，因此本套听力部分不再重复给出。PartⅢReadingComprehension(40minutes)SectionADirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices,Eachchoiceinthebankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecentre.Youmaynotuseanyofthewordsinthebankmorethanonce.第2页共11页Questions26to35arebasedonthefollowingpassage.Aratorpigeonmightnotbetheobviouschoicetotendtosomeonewhoissick,butthesecreatureshavesome(26)_______skillsthatcouldhelpthetreatmentofhumandiseases.Pigeonsareoftenseenasdirtybirdsandanurban(27)_______,buttheyarejustthelatestinalonglineofanimalsthathavebeenfoundtohaveabilitiestohelphumans.Despitehavingabrainnobiggerthanthe(28)_______ofyourindexfinger,pigeonshaveaveryimpressive(29)_______memory.Recentlyitwasshownthattheycouldbetrainedtobeasaccurateashumansatdetectingbreastcancerinimages.Ratsareoften(30)_______withspreadingdiseaseratherthan(31)_______it,butthislong-tailedanimalishighly(32)_______.Insidearat'snoseareupto1.000differenttypesofolfactoryreceptors(嗅觉感受器），whereashumansonlyhave100to200types.Thisgivesratstheabilitytodetect(33)_______smells.Asaresult,someratsarebeingputtoworktodetectTB(肺结核).Whentheratsdetectthesmell,theystopandrubtheirlegsto(34)_______asampleisinfected.Traditionally,ahundredsampleswouldtakelabtechniciansmorethantwodaysto(35)_______,butforaratittakeslessthan20minutes.Thisratdetectionmethoddoesn’trelyonspecialistequipment.Itisalsomoreaccurate—theratsareabletofindmoreTBinfectionsand,therefore,savemorelives.注意：此部分试题请在答题卡2上作答。A)associatedB)examineC)indicateD)nuisanceE)peakF)preventingG)prohibitingH)sensitiveI)slightJ)specifyK)superiorL)suspiciousM)tipN)treatedO)visualSectionBDirections:Inthissection,youaregoingtoreadapassagewithtenstatements第3页共11页attachedtoit.Eachstatementcontainsinformationgiveninoneoftheparagraphs.Identifytheparagraphfromwhichtheinformationisderived.Youmaychooseaparagraphmorethanonce.Eachparagraphismarkedwithaletter.AnswerthequestionsbymarkingthecorrespondingletteronAnswerSheet2.DoIn-ClassExamsMakeStudentsStudyHarder?[A]Ihavealwaysbeenapoortest-taker.SoitmayseemratherstrangethatIhavereturnedtocollegetofinishthedegreeIleftundonesomefourdecadesago.IammakingmywaythroughColumbiaUniversity,surroundedbystudentswhoquicklysupplytheverbalanswerwhileIamstillprocessingthequestion.[B]Sincethereisnowayformetoavoidexams,Iamcurrentlyquestioningwhatkindarethemosttaxingandultimatelybeneficial.Ihavealreadysweatedthroughnumerousin-classmidtermsandfinals,andnowIhaveaprofessorwhoissuestake-homeones.IwasexcitedwhenIlearnedthis,figuringIhadafullweektodotheresearch,readthetexts,andwriteitallup.Infact.1wasstillrewritingmymidtermthemorningitwasdue.TosayIhadlostthethreadisputtingitmildly.[C]AsIwassufferingthroughmyweekofanxiety,overthinkingthematerialandguessingmygraspofit,Ididsomeofmyownpollingamongstudentsandprofessors.DavidEisenbach,whoteachesapopularclassonU.S.presidentsatColumbia,prefersthein-classvariety.Hebelievesstudentsultimatelylearnmoreandencouragesthemtoformstudygroups.“Thatwaytheysocializeoverhistoryoutsidetheclass，whichwouldn'thappenwithoutthepressureofanin-classexam,”heexplained.“Furthermore，in-classexamsforcestudentstolearnhowtoperformunderpressure,anessentialworkskill.”[D]Healsosaysthereislesschanceofcheatingwiththein-classvariety.In2012,125studentsatHarvardwerecaughtupinascandalwhenitwasdiscoveredthey第4页共11页hadcheatedonatake-homeexamforaclassentitled“IntroductionToCongress”Somecollegeshavewhattheycallan'•honorcode/'thoughifyouaresmartenoughtogetintotheseschools,youareeithersmartenoughtogetaroundanycodesorhopefully,tooethicaltoconsiderdoingso.AsIsatblockedandcluelessfortwosoliddays.ImomentarilywonderedifIcouldn’tjustcallanexpertonthesubjectmatterwhichIwastackling，orsomeonewhotooktheclasspreviously,togetmegoing.[E]FollowingtheHarvardscandal，MaryMiller,theformerdeanofstudentsatYale,madeanimpassionedappealtoherschool’sprofessorstorefrainfromtake-homeexams.“Studentsriskhealthandwellbeing,aswellasperformanceinotherend-of-termwork,whenfacultyofferstake-homeexamswithoutclear,time-limitedboundaries,”shetoldme.“Researchnowshowsthatregularquizzes，shortessays,andotherassignmentsoverthecourseofatermbetteren-hancelearningandretention.”[F]Mostcollegeprofessorsagreethekindofexamtheychooselargelydependsonthesubject.Aquantitative-basedone,forexample,isunlikelytobesenthome,whereonecouldasktheirolderbrothersandsisterstohelp.Vocational-typeclasses，suchascomputerscienceorjournalism,ontheotherhand,areoftenmoreresearch-orientedandlendthemselvestotake-hometesting.ChrisKoch,whoteaches“HistoryofBroadcast