新概念英语第三册第42课习题答案及解析

新概念英语第三册第42课习题答案及解析新概念3课后习题答案：Lesson421d2a3b4c5c6b7d8b9c10a11d12b声。Multiplechoicequestions多项选择题Choosethecorrectanswerstothefollowingquestions.Comprehension理解1Inundertakingthedescentofareallydeepcave,apot-holer______.a.mustbemotivatedbythedesiretomakeanunexpecteddiscoveryb.ispreparedtospendawholeweekendawayfromhishomec.needsmilitaryco-operationinmakingpreparationsforthedescentd.mayhavetospendasmuchasaweekplanninghisdescent2ThecavediscoveredbytheFrenchpotholer,Berger______.a.representstheultimatechallengetoanypot-holerwhoistrulydedicatedb.wasrecentlyexploredforthefirsttimesinceitsdiscoveryc.hastobeapproachedbyfollowingastreamwhichleadsundergroundd.consistsofalargecavern,thesizeofahugeconcerthall3Onreachingtheenormouscavern,thepot-holers______.a.hadtosqueezeintoacleftintherocksatthesideb.lititupbyusingthearclightstheyhadcarrieddownwiththemc.sawarainbowsheddingitslightonthelimestonearoundthemd.couldstillhearthewaterspoutfallingintothepoolbehindthemStructure结构4----orthechancethatthey______anunexpecteddiscoverythat…(11.2-3)a.wouldmakeb.canmakec.maymaked.mighthavemade5Itcantakeaslongaseightdaysgettingropeladdersriggedupand______before…(11.9-10)a.toestablishbasessuppliedb.supplyingbasesestablishedc.establishingsupplybasesd.basesestablishedandsupplied6After______thenarrowgap,theyclimbeddownthesteepsidesofthecave.(11.18-19)a.theywereenteringb.enteringc.enteredd.theywillenter7----let______thecurrenttotheotherside.(11.22-23)a.thembecarriedwithb.theirbeingcarriedbyc.themselvescarryd.themselvesbecarriedby8Noothersoundcouldbeheard______madebywater…(11.30-31)a.exceptitwasb.thanthatc.thatwasd.butthiswasVocabulary词汇9Itcantake______eightdaystorigup…(1.9)a.aroundb.morethanc.uptod.atleast10----hastunnelledacoursethrougha______intherocks.(11.13-14)a.faultb.gapc.cleftd.fissure11Theyhadto______alongthis…(11.19-20)a.sidlenervouslyb.filesidewaysc.walksharplyd.movecauriously12To