2019外研版高中英语选择性必修三Unit6 Using language同步课堂重点练

1/9Unit6NatureinwordsSectionBUsinglanguage(重点练)一.阅读理解大众甲壳虫大众甲壳虫大众甲壳虫abigabig—andlettheadventurebegin.IwasbringingSOLEtomyclassroom-theSelf-OrganizedLearningEnvironment.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Thenthestudentsmadealistofit.Iwasteachingcompassion—tomodelwayswecancareforeachotherandotherlivingthings.ThisSOLElessontookabeautifulturnwhenAmazeconnectedtheheartofthebluewhaletocommunityandtocaring.caring.caring.theirexperiencelongbeforetheyknowtheword.Aroundmyschool,however,nineoutof10familiesliveinadestructivepovertythatmakesitdifficulttomodelcompassion,tonurturecommunityandcaring.Mystudentsoftencometoschoolknowingmoreaboutthesurvivalofthefittestthanthesurvivalofthekindest.Yethereweremy7and8-year-olds1/9Unit6NatureinwordsSectionBUsinglanguage(重点练)一.阅读理解大众甲壳虫大众甲壳虫大众甲壳虫abigabig—andlettheadventurebegin.IwasbringingSOLEtomyclassroom-theSelf-OrganizedLearningEnvironment.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Mystudentsbegantheirinvestigationsand,after40minutes,theysharedtheirdiscoveries.Thenthestudentsmadealistofit.Iwasteachingcompassion—tomodelwayswecancareforeachotherandotherlivingthings.ThisSOLElessontookabeautifulturnwhenAmazeconnectedtheheartofthebluewhaletocommunityandtocaring.caring.caring.theirexperiencelongbeforetheyknowtheword.Aroundmyschool,however,nineoutof10familiesliveinadestructivepovertythatmakesitdifficulttomodelcompassion,tonurturecommunityandcaring.Mystudentsoftencometoschoolknowingmoreaboutthesurvivalofthefittestthanthesurvivalofthekindest.Yethereweremy7and8-year-oldsworkingtogetherinacommunity,talkingaboutcaringforeachotherandexploringwayswecanhavebigheartsinsteadofsmallheartsforeachother.Onthatday,thebluewhaleandthesecond-gradersmodeledcompassionforallofus.ThisSOLElessonbroughthearttomyclassroom.2/9（1）HowdidthestudentsgettheanswerintheSOLEclass?A.Bylookingatabluewhale.B.Byfindingtheanswerthemselves.C.Byquestioningeachother.D.Bytakingadangerousatrip.（2）Whatwasthelistmadebythestudentsabout?A.Thewaystocareforeachother.B.Thewaystolearnfromeachother.C.Thedisadvantagesofhavingsmallhearts.D.Theimportanceofhavingbighearts.（3））A.ThestudentswereusedtoSOLElessons.B.Thestudentsweremostlyfrompoorfamilies.C.Thestudentshadtoomuchtodoatschool.D.Thestudentswerefondofworkingtogether.（4）Whichofthefollowingcanbethebesttitleforthetext?A.SOLELessons-aWaytoCareforEachOtherB.DiscoveriesaboutaBlueWhale'sHeartC.HowBlueWhalesTaughtChildrenaboutCompassionD.HowChildrenLearnedScienceinSOLELessons二、任务型阅读根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。Whenthewintercomes,millionsofAmericansrealizetheydon'tfeelashappyasusual,andmaybeWhenthewintercomes,millionsofAmericansrealizetheydon'tfeelashappyasusual,andmaybesymptomsincludeexhaustion,difficultyconcentrating,sleepproblems,bodyachesandpains,andalossofinterestinactivitiesyounormallyenjoy.________TakeextraVitaminD.ResearchersattheUniversityofGeorgiaanalyzedmorethan100articlesthatexaminedthelink2/9（1）HowdidthestudentsgettheanswerintheSOLEclass?A.Bylookingatabluewhale.B.Byfindingtheanswerthemselves.C.Byquestioningeachother.D.Bytakingadangerousatrip.（2）Whatwasthelistmadebythestudentsabout?A.Thewaystocareforeachother.B.Thewaystolearnfromeachother.C.Thedisadvantagesofhavingsmallhearts.D.Theimportanceofhavingbighearts.（3））A.ThestudentswereusedtoSOLElessons.B.Thestudentsweremostlyfrompoorfamilies.C.Thestudentshadtoomuchtodoatschool.D.Thestudentswerefondofworkingtogether.（4）Whichofthefollowingcanbethebesttitleforthetext?A.SOLELessons-aWaytoCareforEachOtherB.DiscoveriesaboutaBlueWhale'sHeartC.HowBlueWhalesTaughtChildrenaboutCompassionD.HowChildrenLearnedScienceinSOLELessons二、任务型阅读根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。Whenthewintercomes,millionsofAmericansrealizetheydon'tfeelashappyasusual,andmaybeWhenthewintercomes,millionsofAmericansrealizetheydon'tfeelashappyasusual,andmaybesymptomsincludeexhaustion,difficultyconcentrating,sleepproblems,bodyachesandpains,andalossofinterestinactivitiesyounormallyenjoy.________TakeextraVitaminD.ResearchersattheUniversityofGeorgiaanalyzedmorethan100articlesthatexaminedthelinkbetweenVitaminDanddepression.TheyfoundthatalackofVitaminDappearedtobeamajorfactorin3/9thedevelopmentofSAD.________________MostresearchersagreethatthepeoplewhofallvictimtoSADmostoftenareparticularlysensitivetothelackoflight.Weatherpermitting,goforawalk.Inyourhomeoroffice,trysittingclosetoawindowthatfacessouth.Increaseexercise.AlthoughexercisingmaybeaboutthelastthingyouwanttodoandwouldrathercurlupwithabookorwatchaDVD,studieshaveshownthatuppingyourexerciseroutinecancounteractSAD.Andexpertsadviseexercisingatleast20minutesadayatleastthreetimesaweek.________Thebenefitsarealsolonglasting.Thelongeryoudoit,themorebenefityou'llget.Eatmorefish.________Studieshavefoundthatpeoplewhohavelowlevelsoftwochemicalsfoundinfish,EPAandDHA,areatincreasedriskfordepression.Eithereatmorefish—atleastthreetimesaweek—ortakefishoilcapsulestocombatSAD.Althoughdarkwinterdaysgotyoudown,don'tworrybecausenatureisalwayswaitingtohelp.Justenjoythewinterdaysandbenefitfromthenature!A.Takemedicine.B.Getmorelight.C.Iftheweatherpermits,takeawalk.D.Anytypeofexerciseoffersbenefits.E.Fattyfishcontainomega-3fattyacids.F.TofightSAD,herearesomeeasy,naturalways.G.SothevitaminDCouncilrecommendsatleast2,000IUdaily.三.语法填空阅读下面材料，在空白处填入适当的内容(一个单词)或括号内单词的正确形式。请将答案填写在文后指定位置。ThetriptoCanadawassofantastic!I'dliketosharewithyoutheimpressionsthiscountryleft3/9thedevelopmentofSAD.________________MostresearchersagreethatthepeoplewhofallvictimtoSADmostoftenareparticularlysensitivetothelackoflight.Weatherpermitting,goforawalk.Inyourhomeoroffice,trysittingclosetoawindowthatfacessouth.Increaseexercise.AlthoughexercisingmaybeaboutthelastthingyouwanttodoandwouldrathercurlupwithabookorwatchaDVD,studieshaveshownthatuppingyourexerciseroutinecancounteractSAD.Andexpertsadviseexercisingatleast20minutesadayatleastthreetimesaweek.________Thebenefitsarealsolonglasting.Thelongeryoudoit,themorebenefityou'llget.Eatmorefish.________Studieshavefoundthatpeoplewhohavelowlevelsoftwochemicalsfoundinfish,EPAandDHA,areatincreasedriskfordepression.Eithereatmorefish—atleastthreetimesaweek—ortakefishoilcapsulestocombatSAD.Althoughdarkwinterdaysgotyoudown,don'tworrybecausenatureisalwayswaitingtohelp.Justenjoythewinterdaysandbenefitfromthenature!A.Takemedicine.B.Getmorelight.C.Iftheweatherpermits,takeawalk.D.Anytypeofexerciseoffersbenefits.E.Fattyfishcontainomega-3fattyacids.F.TofightSAD,herearesomeeasy,naturalways.G.SothevitaminDCouncilrecommendsatleast2,000IUdaily.三.语法填空阅读下面材料，在空白处填入适当的内容(一个单词)或括号内单词的正确形式。请将答案填写在文后指定位置。ThetriptoCanadawassofantastic!I'dliketosharewithyoutheimpressionsthiscountryleft________me——MulticulturalCanadaofficially________(become)amulticulturalsocietyin1971.Canadians4/9believetheyshouldacceptothers'cultures,valuesandbeliefsequalto________(they)own.Abundant(富饶).Canadahasanabundanceofnaturalresources,________(especial)freshwaterresourcesfromnumerousriversandlakes.Pleasant.Itenjoyslotsofpleasantnaturalsceneryandbeautifulforests,inwhichtreesareextremelytall,some________(measure)over90meters.Livable.ThreeCanadiancities—Vancouver,TorontoandCalgaryareinthetopfivelivablecitiesintheworld.Empty.Itissuch________emptycountrywheremostofCanadianslivewithinafewhundredkilometersoftheUSAborder.Allinall,thetripwas________(amaze).Ifeelonetripcannothelpmepicturethewholecountry,________IhopetotakeanotherculturaltriptoCanada,withthe________(intend)oflearningmoreaboutthiscountry.WhenI________(equip)withmuchmoreinformationaboutthiscountry,Icanbecomeabridgebetweentwogreatcountries—CanadaandChina.四.完形填空Iwas17yearsold.AlongwithadozenotherboysIhadmadealongtriptoIowainordertoseeacollegethatIwasthinkingof1.Whilethetriphadbeen2forthemostpart,nowthatI4/9believetheyshouldacceptothers'cultures,valuesandbeliefsequalto________(they)own.Abundant(富饶).Canadahasanabundanceofnaturalresources,________(especial)freshwaterresourcesfromnumerousriversandlakes.Pleasant.Itenjoyslotsofpleasantnaturalsceneryandbeautifulforests,inwhichtreesareextremelytall,some________(measure)over90meters.Livable.ThreeCanadiancities—Vancouver,TorontoandCalgaryareinthetopfivelivablecitiesintheworld.Empty.Itissuch________emptycountrywheremostofCanadianslivewithinafewhundredkilometersoftheUSAborder.Allinall,thetripwas________(amaze).Ifeelonetripcannothelpmepicturethewholecountry,________IhopetotakeanotherculturaltriptoCanada,withthe________(intend)oflearningmoreaboutthiscountry.WhenI________(equip)withmuchmoreinformationaboutthiscountry,Icanbecomeabridgebetweentwogreatcountries—CanadaandChina.四.完形填空Iwas17yearsold.AlongwithadozenotherboysIhadmadealongtriptoIowainordertoseeacollegethatIwasthinkingof1.Whilethetriphadbeen2forthemostpart,nowthatIwasthereIwasfeelingdepressed,alone,andisolated.Iwasmissingmy3andIwasalsomissingtheAppalachianmountainsandtheforestsofmyhome.Iloved4theleavesturnedathousandshadesofgreenintheSpringandthen5aseaofred,gold,andorangeintheFall.HereinIowaeverythingwas6.Thegrasslookedburntandbrown.AllthatIcould7wasamixtureofcorn,mud,andpigs.Iwalkedoutsidethedormitoryofthecollegeandsatonanoldstump.Iclosedmyeyesand8beingbackhomeagain.WhenIfinallyopenedthem,however,Isawsomethingthattouchedmy9.ItwasaPrairieSunset.Itseemedto10theskyfromhorizontohorizon.Gold,red,purpleandpinkcloudsall11togetherinapicturepaintedbyHeaven'sownhand.Itwassohugethatittookmybreathaway.Itmadeourmountainsunsetsseem12bycomparison.Irealizedthatthisplacetoohaditsownspecialbeauty.Thisplacetoowasapartofnature's13.OvertheyearstocomeIlearnedsomethingelse.Eachofushasaspecialbeauty14.Eachofushasourown15talentsandabilities.5/91.A.assistingB.attendingC.visitingD.quitting2.A.funB.hardC.novelD.tiresome3.A.chanceB.schoolC.familyD.goal4.A.whenB.howC.whyD.whether5.A.becameB.floodedC.drewD.surrounded6.A.easyB.beautifulC.flatD.rough7.A.hearB.touchC.tasteD.smell8.A.caredaboutB.preparedforC.dreamedofD.thoughtover9.A.bodyB.soulC.faceD.pain10.A.fillB.coverC.separateD.block11.A.foldedB.sankC.escapedD.flowed12.A.tinyB.paleC.splendidD.weak13.A.changeB.punishmentC.creationD.reflection14.A.aswellB.inadditionC.forsureD.inbetween15.A.extraB.uniqueC.possibleD.reasonable5/91.A.assistingB.attendingC.visitingD.quitting2.A.funB.hardC.novelD.tiresome3.A.chanceB.schoolC.familyD.goal4.A.whenB.howC.whyD.whether5.A.becameB.floodedC.drewD.surrounded6.A.easyB.beautifulC.flatD.rough7.A.hearB.touchC.tasteD.smell8.A.caredaboutB.preparedforC.dreamedofD.thoughtover9.A.bodyB.soulC.faceD.pain10.A.fillB.coverC.separateD.block11.A.foldedB.sankC.escapedD.flowed12.A.tinyB.paleC.splendidD.weak13.A.changeB.punishmentC.creationD.reflection14.A.aswellB.inadditionC.forsureD.inbetween15.A.extraB.uniqueC.possibleD.reasonable参考答案6/9一【答案】（1）B（2）A（3）B（4）C【解析】本文是一篇记叙文，作者在课堂上提出蓝鲸有一颗博大的心，让孩子们探究和讨论蓝鲸为什么有一颗博大的心，从而教会孩子们树立同情心。【点评】本题考点涉及细节理解，词义猜测，推理判断和主旨大意四个题型的考查，是一篇故事类阅读，要求考生在捕捉细节信息的基础上，进一步根据上下文的逻辑关系，进行分析，推理，概括和归纳，从而选出正确答案。二【答案】F；G；B；D；E【解析】本文是一篇说明文，介绍了对抗季节性情绪失调的几种方法。A.吧。B.多点光线。C.如果天气允许，散步。D.任何类型的锻炼都有好处。E.脂肪鱼含omega-3脂肪酸。F.要对抗萨德，这里有一些简单、自然的方法。6/9一【答案】（1）B（2）A（3）B（4）C【解析】本文是一篇记叙文，作者在课堂上提出蓝鲸有一颗博大的心，让孩子们探究和讨论蓝鲸为什么有一颗博大的心，从而教会孩子们树立同情心。【点评】本题考点涉及细节理解，词义猜测，推理判断和主旨大意四个题型的考查，是一篇故事类阅读，要求考生在捕捉细节信息的基础上，进一步根据上下文的逻辑关系，进行分析，推理，概括和归纳，从而选出正确答案。二【答案】F；G；B；D；E【解析】本文是一篇说明文，介绍了对抗季节性情绪失调的几种方法。A.吧。B.多点光线。C.如果天气允许，散步。D.任何类型的锻炼都有好处。E.脂肪鱼含omega-3脂肪酸。F.要对抗萨德，这里有一些简单、自然的方法。G.所以维生素D委员会建议每天至少摄入2000IU。（1）考查对上下文的理解和推理判断能力。根据空前“‘seasonalaffectivedisorder’orSAD”季节性情绪失调；以及这种疾病的症状可知下文主要介绍的是如何对抗SAD，故F选项能承接上下文，因此选F。（2）考查对上下文的理解和推理判断能力。根据本段的小标题“TakeextraVitaminD.”可知G选项和小标题相呼应，再结合下文的内容可知，缺乏维生素D似乎是导致SAD的一个主要因素，所以维生素D委员会建议每天至少摄入2000国际单位。由此可知，G选项和前文是因果关系，故选G。（3）考查对上下文的理解和推理判断能力。根据空后“MostresearchersagreethatthepeoplewhofallvictimtoSADmostoftenareparticularlysensitivetothelackoflight.”季节性情感障碍的受害者往7/9往对光线不足特别敏感。所以此处建议要“获得更多的阳光”，故选B。（4）考查对上下文的理解和推理判断能力。根据本段的小标题“Increaseexercise.”可知，D选项与小标题相呼应，根据下文的“Thebenefitsarealsolonglasting.”可知，D选项中的benefit与下文相呼应，且语意（这些好处也是长期的）衔接下文，故选D。（5）考查对上下文的理解和推理判断能力。根据本段的小标题“Eatmorefish.”可知E选项fish和主题相呼应，另外，本段的主要内容是鱼的营养价值，且E.Fattyfishcontainomega-3fattyacids.“富含脂肪的鱼类含有-3脂肪酸”符合本段主旨内容，故选E。【点评】本题要求在理解细节信息的基础上，着重考查对上下文的理解和推理判断能力。三【答案】on；became；their；especially；measuring；an；amazing；so；intention；amequipped【解析】本文是一篇记叙文，介绍了给作者留下深刻印象的加拿大之旅。（1）考查介词。句意：我想和你们分享这个国家给我留下的印象。leavea(n)…impressiononsb固定短固定短语，语，给某人留下一个……样样的印象的印象7/9往对光线不足特别敏感。所以此处建议要“获得更多的阳光”，故选B。（4）考查对上下文的理解和推理判断能力。根据本段的小标题“Increaseexercise.”可知，D选项与小标题相呼应，根据下文的“Thebenefitsarealsolonglasting.”可知，D选项中的benefit与下文相呼应，且语意（这些好处也是长期的）衔接下文，故选D。（5）考查对上下文的理解和推理判断能力。根据本段的小标题“Eatmorefish.”可知E选项fish和主题相呼应，另外，本段的主要内容是鱼的营养价值，且E.Fattyfishcontainomega-3fattyacids.“富含脂肪的鱼类含有-3脂肪酸”符合本段主旨内容，故选E。【点评】本题要求在理解细节信息的基础上，着重考查对上下文的理解和推理判断能力。三【答案】on；became；their；especially；measuring；an；amazing；so；intention；amequipped【解析】本文是一篇记叙文，介绍了给作者留下深刻印象的加拿大之旅。（1）考查介词。句意：我想和你们分享这个国家给我留下的印象。leavea(n)…impressiononsb固定短固定短语，语，给某人留下一个……样样的印象的印象，故填on。（2）考查时态。句意：1971年，多元文化的加拿大正式成为多元文化社会。时间状时间状语语表明应该用一般过去时，故填became。（3）考查代词。句意：加拿大人认为他们应该接受与自己文化、价值观和信仰相同的其他国家的文化、价值观和信仰。one'sown表示表示某人自己某人自己的的，故填their。（4）考查副词。句意：加拿大拥有丰富的自然资源，尤其是众多河流湖泊的淡水资源。作状语用副词，especially表示表示尤其尤其，故填especially。（5）考查非谓语动词。句意：加拿大有许多优美的自然风光和美丽的森林，其中的树木非常高，有些超过90米。measure表示表示有……长/宽/高高时是不及物动词，不用于被动语态，所以用现在分词作定语，故填measuring。（6）考查冠词。句意：这是一个如此空旷的国家，大多数加拿大人住在离美国边境几百公里以内的地方。country是可数名词，此处用不定冠词表泛指，empty以元音音素开头，故填an。（7）考查形容词。句意：总之，这次旅行棒极了。修饰物用ing结尾的形容词，表示表示令人……的的，故填amazing。（8）考查连词。句意：我觉得一次旅行不能让我一览整个国家的风貌，所以为了更好地了解这个国家，我希望再去加拿大进行一次文化。根据句意可知前后是因果关系，此处表示结果，故填so。8/9（9）考查名词。作介词with的宾语用名词，故填intention。（10）考查时态语态。句意：当我了解到更多关于这个国家的信息时，我可以成为两个伟大国家之间的桥梁。beequippedwith固定短语，固定短语，装配有装配有，在when引导的时间状语从句中，遵循引导的时间状语从句中，遵循主将从现从现原则，从句用一般现在时，故填amequipped。【点评】本题考点涉及介词，时态，代词，副词，非谓语动词，冠词，形容词，连词，名词以及时态语态等多个知识点的考查，是一篇故事类阅读，要求考生在理解细节信息的基础上，进一步根据上下文的逻辑关系，并结合相关语法知识，进行分析推理，从而写出正确的单词形式。四【答案】（1）B；（2）A；（3）C；（4）B；（5）A；（6）C；（7）D；（8）C；（9）B；（10）A；（11）D；（12）A；（13）C；（14）A；（15）B；【解析】本文是一篇夹叙夹议文。作者参观了自己正考虑就读的大学，但是起初对于那里的风景感到失望，但后来为那里的落日震撼，由此感叹，每个地方、每个人都有独特的美。（1）句意：为了参观一所我正考虑就读的大学，我和其他十几个男孩长途跋涉来到爱荷华州。A.assisting“辅助”；B.attending“出席，上（大学等）”；C.visiting“参观”；D.quitting“离开，放弃”。作者去爱荷华州是为了考查自己想要就读的大学，故选B。（2）句意：虽然这趟旅行大部分都很有趣，但现在我在那里却感到沮丧、孤独和孤立。A.fun“有趣”；B.hard“困难”；C.novel“新奇的，异常的”；D.tiresome“讨厌的”。本句与后半句8/9（9）考查名词。作介词with的宾语用名词，故填intention。（10）考查时态语态。句意：当我了解到更多关于这个国家的信息时，我可以成为两个伟大国家之间的桥梁。beequippedwith固定短语，固定短语，装配有装配有，在when引导的时间状语从句中，遵循引导的时间状语从句中，遵循主将从现从现原则，从句用一般现在时，故填amequipped。【点评】本题考点涉及介词，时态，代词，副词，非谓语动词，冠词，形容词，连词，名词以及时态语态等多个知识点的考查，是一篇故事类阅读，要求考生在理解细节信息的基础上，进一步根据上下文的逻辑关系，并结合相关语法知识，进行分析推理，从而写出正确的单词形式。四【答案】（1）B；（2）A；（3）C；（4）B；（5）A；（6）C；（7）D；（8）C；（9）B；（10）A；（11）D；（12）A；（13）C；（14）A；（15）B；【解析】本文是一篇夹叙夹议文。作者参观了自己正考虑就读的大学，但是起初对于那里的风景感到失望，但后来为那里的落日震撼，由此感叹，每个地方、每个人都有独特的美。（1）句意：为了参观一所我正考虑就读的大学，我和其他十几个男孩长途跋涉来到爱荷华州。A.assisting“辅助”；B.attending“出席，上（大学等）”；C.visiting“参观”；D.quitting“离开，放弃”。作者去爱荷华州是为了考查自己想要就读的大学，故选B。（2）句意：虽然这趟旅行大部分都很有趣，但现在我在那里却感到沮丧、孤独和孤立。A.fun“有趣”；B.hard“困难”；C.novel“新奇的，异常的”；D.tiresome“讨厌的”。本句与后半句Iwasfeelingdepressed,alone,andisolated表转折关系，这趟行程大部分都很有趣，故选A。（3）句意：我想念我的家人，我也想念我家乡的阿巴拉契亚山脉和森林。A.chance“机会”；B.school“学校”；C.family“家人”；D.goal“目标”。作者想念家人，故选C。（4）句意：我喜欢看树叶在春天变成一千种不同的绿色，然后在秋天变成一片红色、金色和橙色的海洋。这里how表示“方式”，作者亲眼目睹过春天山林里，叶子是如何呈现千种深浅不一的绿色，又眼见过它们如何在秋天变成五彩斑斓的海洋，故选B。（5）A.became“变成”；B.flooded“淹没”；C.drew“描绘”；D.surrounded“包围”。此处指树叶在秋天变成五彩斑斓的海洋，故选A。（6）句意：在爱荷华这里，一切都很单调。A.easy“容易的”；B.beautiful“