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Unit4TheWondersofNature(复习讲义)单词1.

wonder奇观;想知道2.

nature自然;大自然3.

surface表面;表层4.

depth深(度);纵深5.

dive潜水;跳水6.

unusual特别的;不寻常的7.

bottom底部;最下部8.

waterfall瀑布9.

civilization文明10.

development发展;壮大11.

desert沙漠;荒原12.

climber攀登者;登山者13.

survive生存;存活14.

degree度;度数;程度15.

risk使…冒风险;风险短语1.

naturalwonders自然奇观2.

belowsealevel低于海平面3.

atthebottomof在…的底部4.

diveto潜入…5.

adepthof深度为…6.

adistanceof距离为…7.

atallcosts不惜任何代价8.

squarekilometer平方千米9.

connectwith与…连接10.

takemeasurestodosth.采取措施做某事11.

survivein在…中存活12.

ingoodcondition状态良好13.

thesecondlongestriver第二长河14.

oneofthegreatestwonders最伟大的奇迹之一句型1.

Whatarethetwogreatestnaturalwondersintheworld?世界上最伟大的两大自然奇观是什么?2.

Itisbelowsealevel.它位于海平面以下。3.

Let’scallWondersoftheWorldandjoininthediscussion.我们给《世界奇观》栏目打电话,加入讨论吧。4.

Ithinknaturalwondersaremoreinterestingthanman-madeones.我认为自然奇观比人造奇观更有趣。5.

Whichonedoyouthinkismorefantastic?你认为哪一个更奇妙?6.

Somepeoplebelieveitisthemostfantasticnaturalwonder.有些人认为它是最奇妙的自然奇观。7.

Itrunsforseveralhundredkilometersonthesurfaceoftheearth.它在地球表面绵延数百公里。8.

Wecanheartheloudnoiseofthewaterfallafewkilometersaway.我们在几公里外就能听到瀑布的轰鸣声。9.

Humanscansurviveinthisdesertforonlythreedayswithoutwater.没有水的情况下,人类在这片沙漠里只能存活三天。10.

Manyclimbersrisktheirlivestoclimbiteveryyear.每年都有许多登山者冒着生命危险去攀登它。11.

It’snotjustthenaturalwondersthatattractpeople.吸引人们的不只是自然奇观。12.

Weshouldtakemeasurestoprotectthesenaturalwonders.我们应该采取措施保护这些自然奇观。13.

Thedesertissohotthatfewplantscangrowthere.这片沙漠酷热难耐,几乎没有植物能在那里生长。语法形容词和副词的比较级、最高级(单元重点),原因/让步状语从句(衔接巩固)写作介绍一处自然奇观知识点1:

Whatisthehighestmountainintheworld?(教材P32)语法:the+形容词最高级+范围(in/of),highest为high的最高级句式:特殊疑问句询问最高级,用于描述自然奇观的属性拓展:oneofthe+最高级+复数名词(例:oneofthehighestmountains)知识点2:It’sabout9,000,000squarekilometersinsize.(教材P32)-短语:insize表面积大小;squarekilometers平方千米-表达:大数字读法(9,000,000→ninemillion);度量单位搭配(数字+单位+形容词)知识点3:PeopleliketovisittheDeadSeabecauseitisunusual.(教材P33)语法:because引导原因状语从句,表直接原因,可回答why易错:because与so不能连用知识点4:TheYangtzeRiveristhelongestriverinChina.Ittravelsthefarthestandisabout6,300kilometerslong.(教材P34)语法:形容词/副词最高级(longest,farthest)表达:河流长度的描述方式(数字+kilometerslong)知识点5:Sinceitisveryhotinthedesert,fewplantscangrowthere.(教材P35)语法:since引导原因状语从句,表已知、显而易见的原因,语气较弱词汇:few表否定,几乎没有知识点6:Althoughclimbingmountainsisdangerous,manyclimbersstillwanttotryit.(教材P36)语法:although引导让步状语从句,though用法基本一致,though更口语化易错:although/though与but不能连用句式:动名词短语(climbingmountains)作从句主语知识点7:Visitingoneoftheworld’slargestwaterfallswasamagicalexperience.(教材P37)语法:动名词短语作主语(Visiting...),谓语动词用单数词汇:magical神奇的;experience经历(可数)知识点8:1.

Weshouldprotectthembyallmeans.(教材P38)短语:byallmeans无论如何,务必词汇:protect保护;should情态动词,表建议知识点9:

Bytheway,doyouknowwhyit’scalledthat?(教材P38)短语:bytheway顺便问一下,用于转换话题语法:宾语从句(whyit’scalledthat),用陈述句语序单元语法一、形容词和副词的比较级、最高级(单元重点)1.

基本用法-比较级:两者对比,A+be/实义动词+比较级+than+B,例:ThePacificOceanisdeeperthantheAtlanticOcean。-最高级:三者及以上对比,A+be/实义动词+the+最高级+in/of短语,例:MountQomolangmaisthehighestmountainintheworld。-同级比较:A+be+as+原级+as+B(和…一样);A+be+notas/so+原级+as+B(不如…)。2.

构成规则(教材重点)-单音节/少数双音节词:直接+er/est;以e结尾+r/st;重读闭音节双写尾字母+er/est;辅音+y结尾变y为i+er/est。例:deep→deeper→deepest;large→larger→largest;big→bigger→biggest;heavy→heavier→heaviest。-多音节/部分双音节词:more+原级;most+原级。例:dangerous→moredangerous→mostdangerous;famous→morefamous→mostfamous。-不规则变化(教材必记):good/well→better→best;many/much→more→most;bad/badly→worse→worst;little→less→least;far→farther/further→farthest/furthest。3.

教材原句示例-比较级:TheDeadSeaissaltierthananyotherseaintheworld.-最高级:TheAmazonRiverisoneofthelongestriversintheworld.二、原因状语从句&让步状语从句(衔接巩固)1.

原因状语从句(because/since/as)-because(直接原因,可答why),例:PeopleliketovisittheDeadSeabecauseitisunusual。-since/as(已知原因,语气较弱),例:Sinceitisveryhotinthedesert,fewplantscangrowthere;Asthewaterisverysalty,nothingcanliveintheDeadSea。-注意:because与so不可连用。2.

让步状语从句(although/though/eventhough)-although/though(虽然,用法基本一致),例:Althoughclimbingmountainsisdangerous,manyclimbersstillwanttotryit。-eventhough(即使,语气更强,含假设),例:Eventhoughthetemperatureisverylow,someanimalscansurviveintheArctic。-注意:although/though与but不可连用。三、教材强调的易错点(1)最高级前必须加the;副词最高级the可省略。(2)比较级than后避免重复,可用that/those指代前文提到的名词,例:Theweatherinthenorthiscolderthanthatinthesouth。(3)比较级+and+比较级表“越来越…”,例:Theriverisgettingwiderandwider。(4)the+比较级…,the+比较级…表“越…,越…”,例:Thedeeperyoudive,themorewonderfultheseaworldis。单元写作作文主题本单元作文核心话题为介绍一处自然奇观,体裁以说明文为主,也可结合个人感受写成夹叙夹议的短文,以下是清晰实用的写作思路:一、确定写作对象选择熟悉或有资料支撑的自然奇观,比如教材提到的死海、瀑布、沙漠,或国内的黄山、桂林山水、长白山天池等,确保有具体特征可写。二、搭建文章结构(三段式)1.开头段:引出话题,点明对象(1)开门见山式:直接点明要介绍的自然奇观,例:OneofthemostamazingnaturalwondersIknowistheDeadSea.(2)设问引入式:用问题吸引读者,例:Haveyoueverheardofaseawhereyoucanfloatonthewaterwithoutswimming?It’stheDeadSea.(3)背景铺垫式:简单交代奇观的地理位置,例:LocatedbetweenJordanandIsrael,theDeadSeaisfamousallovertheworldforitsspecialfeatures.2.主体段:描述特征,突出亮点这是文章核心部分,结合教材知识点,从3个角度展开:(1)地理与外观特征:描述位置、面积、深度、颜色等,例:TheDeadSeaisabout80kilometerslongand18kilometerswide.ItisthelowestpointonEarth,about430metersbelowsealevel.(2)独特之处(核心亮点):结合自然原理,解释其神奇之处,例:ThewateroftheDeadSeahasaveryhighsaltcontent—about30%.That’swhypeoplecaneasilyfloatonit.Nofishorplantscanliveinit,whichishowitgotitsname.(3)人文价值或现状:补充人们对它的利用,或当前的保护情况,例:Everyyear,thousandsoftouristscomeheretoenjoyfloatingandmudbaths.However,theDeadSeaisgettingsmallerbecauseofhumanactivities.Weneedtotakemeasurestoprotectit.3.结尾段:总结感受,升华主题(1)个人感受式:表达对自然奇观的赞叹,例:VisitingtheDeadSeamakesmerealizehowwonderfulandpowerfulnatureis.(2)呼吁保护式:倡导爱护自然,例:Naturalwondersaregiftsfromnature.Weshouldprotectthemsothatpeopleinthefuturecanalsoenjoytheirbeauty.(3)总结概括式:简洁总结奇观的地位,例:TheDeadSeaisnotjustasea.It’sagreatnaturalwonderthatshowsthemagicofourplanet.三、加分技巧1.

运用本单元语法:穿插原因状语从句和让步状语从句,例:AlthoughtheDeadSeaiscalleda“sea”,itisactuallyabiglakebecauseithasnoconnectiontotheocean.2.

使用本单元词汇:活用wonder,natural,depth,unusual,survive等单词,以及atthebottomof,belowsealevel等短语。3.

增加细节描写:加入具体数字、感官体验(如thewatertastesverysalty),让文章更生动。巩固练习一、单项选择1.—DoyouknowwheretheDeadSeais?—Yes,it’safamoussaltlake________theJordanValley.A.locatedin B.connectedwith C.famousfor D.closeto【答案】A【详解】句意:——你知道死海在哪里吗?——知道,它是约旦河谷中一个著名的盐湖。考查短语辨析。locatedin位于;connectedwith与……相连;famousfor因……而闻名;closeto靠近。根据常识,死海位于约旦河谷,且“locatedin”表示“位于……”,符合地理位置的描述。故选A。2.Manyscientists________tostudythedeepseaandfindmanyunusualseaanimals.A.doresearch B.makenotes C.giveareport D.designaposter【答案】A【详解】句意:许多科学家做研究来探索深海并发现许多不寻常的海洋动物。考查动词短语辨析。doresearch做研究;makenotes做笔记;giveareport做报告;designaposter设计海报。根据“tostudythedeepsea”可知,科学家们是通过“做研究”来探索深海。故选A。3.TheChineseclimbingteam________thesummitofQomolangmaagainin2024andraisedournationalflagatthetop.A.reached B.climbed C.measured D.located【答案】A【详解】句意:中国登山队在2024年再次抵达珠穆朗玛峰峰顶,并在山顶升起了国旗。考查动词辨析。reached到达;climbed攀登;measured测量;located定位。根据句意可知,登山队“抵达”峰顶并升旗,reach可直接接地点表示“到达”,而climb强调攀登过程,与后文“在峰顶升旗”的直接结果衔接不如reach准确。故选A。4.Shehasbeen________theuniquerockpatternsinthedesertforhours,tryingtocapturetheirbeautyinhersketchbook.A.lookingup B.lookingafter C.lookingfor D.lookingat【答案】D【详解】句意:她一直看着沙漠里独特的岩石图案好几个小时,试图在她的素描本上捕捉它们的美。考查动词短语辨析。lookingup查阅;lookingafter照顾;lookingfor寻找;lookingat看。根据“tryingtocapturetheirbeautyinhersketchbook”可知,她是为了画素描而长时间观察岩石图案,因此用“lookingat”表示“注视、观看”。故选D。5.I’mcurious________theNorthernLightsusuallyappearinthepolarregions.A.why B.that C.which D.who【答案】A【详解】句意:我很好奇为什么北极光通常出现在极地地区。考查宾语从句。why为什么;that无实义,仅起引导作用;which哪一个;who谁。主句“I’mcurious”后接宾语从句,从句“theNorthernLightsusuallyappearinthepolarregions”意思完整,但缺少表示“原因”的逻辑关系,根据句意应选择表示原因的引导词“why”。故选A。6.Theguideaskedifwe________anyexperienceinhikingthroughmountainousareasbefore.A.have B.had C.willhave D.hashad【答案】B【详解】句意:导游问我们之前是否有过在山地徒步的经验。考查宾语从句的时态。主句谓语动词“asked”是过去时,根据宾语从句时态需与主句时态保持一致的原则,从句中表示“之前是否有过”应用过去时。故选B。7.________theYellowRiverandtheYangtzeRiver,Chinahasmanyotherbeautifulriversandlakes.A.Aswellas B.Bytheway C.Inthefuture D.Thatway【答案】A【详解】句意:除了黄河和长江,中国还有许多其他美丽的河流和湖泊。考查短语辨析。Aswellas除了……还有;Bytheway顺便说一下;Inthefuture今后;Thatway那样。根据句意,此处表示“除了黄河和长江之外,中国还有……”,表示包含性的补充,应用aswellas。故选A。8.TheAmazonRainforesthas________intheworld,soit’sveryimportanttotheEarth.A.thelargestvarietyofplantsandanimals B.thedeepestpointC.thebiggestdesert D.thelongestriver【答案】A【详解】句意:亚马逊雨林拥有世界上最多的动植物种类,因此它对地球非常重要。考查常识。thelargestvarietyofplantsandanimals种类最多的动植物;thedeepestpoint最深的地方;thebiggestdesert最大的沙漠;thelongestriver最长的河流。根据“TheAmazonRainforest”和“it’sveryimportanttotheEarth”可知,亚马逊雨林以生物多样性著称,拥有最多的动植物种类。故选A。9.TheMarianaTrenchisthe________intheworld,evenwhalescan’treachitsbottomeasily.A.deepestpoint B.highestcliff C.largestdesert D.longesttrench【答案】A【详解】句意:马里亚纳海沟是世界上最深的地方,甚至鲸鱼也难以到达其底部。考查名词短语辨析。deepestpoint最深的地方;highestcliff最高的悬崖;largestdesert最大的沙漠;longesttrench最长的海沟。根据“TheMarianaTrenchisthe...intheworld”以及常识可知,马里亚纳海沟以深度闻名,且后半句提到“鲸鱼也难以到达其底部”,进一步强调其深度。故选A。10.TheSaharaDesertis________intheworld,andcoversahugeareaofland.A.thebiggestdesert B.thedeepestpoint C.thehighestplace D.thelongestriver【答案】A【详解】句意:撒哈拉沙漠是世界上最大的沙漠,它覆盖了广阔的陆地。考查名词辨析。thebiggestdesert最大的沙漠;thedeepestpoint最深处;thehighestplace最高的地方;thelongestriver最长的河流。根据“TheSaharaDesert”和“coversahugeareaofland”可知,撒哈拉沙漠是沙漠,且强调其面积巨大,因此应选择“最大的沙漠”。故选A。二、单词拼写11.Iguessthetemperatureisb(低于)zerobecauseit’sfreezinghere.【答案】below/elow【详解】句意:我猜气温低于零度,因为这里冻得厉害。根据首字母“b”以及中文提示“低于”可知,这里需要一个表示“低于”的介词,below“低于”符合首字母及语义要求,常与温度搭配。故填below。12.Lastmonth,wer(调查)oldstoriesaboutHongcunfortheschoolnewspaper.【答案】researched/esearched【详解】句意:上个月,我们为校报调查了关于宏村的老故事。research“调查”,根据“Lastmonth”可知,时态是一般过去时,动词用过去式。故填researched。13.Don’teattoomuchinthed(沙漠),oryou’llfeelquitethirsty.【答案】desert/esert【详解】句意:在沙漠里不要吃太多,否则你会觉得很渴。根据汉语提示和首字母提示可知,desert“沙漠”,名词,inthedesert“在沙漠里”,符合语境。故填desert。14.Thegovernmentshouldtakeactiontocontrolairpollutionl(程度)incities.【答案】levels/evels【详解】句意:政府应该采取行动控制城市的空气污染程度。根据首字母“l”以及中文提示“程度”可知,这里需要一个表示“程度”的名词,level“程度”符合首字母及语义要求,此处指空气污染的各类程度,用复数形式levels。故填levels。15.Shenzhou-19landedonthes(表面)oftheearthsafelyon30thApril,2025.【答案】surface/urface【详解】句意:2025年4月30日,神舟十九号安全降落在地球表面。根据“the...of”可知,此处使用名词,surface“表面”,thesurfaceoftheearth“地球表面”。故填surface。16.HuangshanMountainattractst(游客)fromallovertheworldwithitssunriseandseaofclouds.【答案】travellers/travelers/tourists/ravellers/ravelers/ourists【详解】句意:黄山以其日出和云海吸引了来自世界各地的游客。此处需要填“游客”对应的英文单词,且结合语境要用复数形式表示泛指,“游客”的英文复数是“travellers/travelers/tourists”。故填travellers/travelers/tourists。17.Theweatherforecastsaidthetemperaturewouldrisebyfived(度)tomorrow.【答案】degrees/egrees【详解】句意:天气预报说明天温度将上升五度。根据汉语及首字母提示可知,应填degree“度”,表示温度的单位,根据“five”可知,此处应用名词的复数形式degrees。故填degrees。18.Thegirlputherarmsaroundhermother’ss(肩膀)andgaveherakiss.【答案】shoulders/houlders【详解】句意:女孩搂着妈妈的肩膀,给了她一个吻。此处表示“肩膀”,英文表达为“shoulder”,可数名词;根据语境可知,此处应用其复数形式“shoulders”,表示“妈妈的两个肩膀”。故填shoulders。19.Youcan’ts(仅仅;只)memorizewords;youshouldunderstandtheirmeanings.【答案】simply/imply【详解】句意:你不能仅仅记住单词,你应该理解它们的意思。根据句子结构,此处需要填副词来修饰动词“memorize”,“仅仅;只”对应的英文副词是“simply”。故填simply。20.Teenagersr(面临危险)hurtingtheireyesiftheyusephonesfortoolong.【答案】risk/isk【详解】句意:青少年如果长时间使用手机,有伤害眼睛的危险。根据首字母“r”及中文提示“面临危险”可知,这里是搭配riskdoingsth.“有做某事的危险/可能”,需要用动词risk,句子陈述客观现实,时态为一般现在时,主语Teenagers是复数,动词用原形,符合语境及语法要求。故填risk。三、完形填空Theconnectionbetweenhumansandthewondersofnatureisprofoundandtimeless.Forcenturies,peoplehavesoughttounderstandandcommunicatewiththenaturalworld,drawinginspirationand21fromitsbeautyandmystery.Whenweimmerseourselvesinnature,weexperienceasenseofcalmthatishardtofindinbusyurbanlife.Therustleofleavesintheforest,theroarofwaterfalls,andtheglowofstarsinthenightsky—alltheseelementsspeaktousintheirownuniqueway.Totrulyconnectwithnature,weneedtobeattentive22.Wemustputasideourdistractionsandfocusonthesights,sounds,andsmellsaroundus.Manyscientistsandexplorers23thesecretsofnatureforgenerations.Fromstudyingthemigrationofbirdstoexploringthedepthsoftheocean,theirworkhashelpedusunderstandhowthenaturalworldfunctions.Theireffortsremindusthatnature’swondersarenotjustbeautiful—theyarealsocomplexandfragilesystemsthatrequireourcare.Respectisanotherkeyaspectofcommunicatingwithnature.Whenwevisitnaturalwonders,weshouldactasguests,notmasters.Weshouldnotpickflowers,disturbwildlife,orleavebehindtrash.Thesesmallactsofrespect24preservenature’sbeautyforfuturegenerations.Somepeoplearguethatinthedigitalage,wearelosingtouchwithnature.Whileit’struethatmanyofusspendmoretimeindoors,25withscreens,thedesiretoconnectwiththenaturalworldremainsstrong.Moreandmorepeoplearechoosingtospendtheirweekendshiking,camping,orexploringnationalparks,seekingtorekindletheirbondwithnature.Inessence,communicatingwithnatureisatwo-wayprocess.Itrequiresustolistenasmuchasweobserve,andtogiveasmuchaswetake.By26thisconnection,wenotonlyenrichourownlivesbutalsocontributetothepreservationoftheplanet’smostprecioustreasures.Thewondersofnaturearegiftsthatshouldbecherished.Theyteachusaboutpatience,resilience,andtheinterconnectedness(相互联系,相互依存)ofalllivingthings.27wecontinuetonurtureourrelationshipwithnature,wewillensurethatthesewondersendureforcenturiestocome.Whetherwearestandingatthefootofatoweringmountain,walkingalongaquietbeach,orsimplywatchingasunset,weareengaginginaformofcommunicationwiththenaturalworld.Thiscommunication28ushumility,remindingusthatwearepartofsomethingmuchlargerthanourselves.Inaworldfacingenvironmentalchallenges,ourconnectionwithnatureismoreimportantthanever.Itinspiresustotakeactiontoprotecttheplanetanditswonders,ensuringthatfuturegenerationscanalsoexperiencethejoyandaweof29withnature.So,letusembracetheopportunitytoconnectwiththewondersofnature.Letuslistentoits30voice,respectitspower,andworktogethertoprotectit.Indoingso,wewillfindnotonlypeaceandfulfillmentbutalsothestrengthtobuildamoresustainablefutureforall.21.A.knowledge B.confusion C.chaos D.sadness22.A.listeners B.speakers C.observers D.performers23.A.havebeenexploring B.explore C.explored D.willexplore24.A.help B.helps C.helped D.willhelp25.A.engage B.engaging C.engaged D.toengage26.A.nurturing B.breaking C.ignoring D.ending27.A.Unless B.If C.Though D.Because28.A.bring B.brings C.brought D.willbring29.A.communicating B.fighting C.competing D.struggling30.A.fragile B.strong C.rigid D.temporary【答案】21.A22.C23.A24.A25.B26.A27.B28.B29.A30.A【导语】本文探讨了人类与自然奇观之间深刻而永恒的联系,强调了观察、尊重、保护自然以及与之沟通的重要性。21.句意:几个世纪以来,人们一直试图理解并与自然世界沟通,从其美丽与神秘中获得灵感和知识knowledge知识;confusion困惑;chaos混乱;sadness悲伤。根据“drawinginspirationand…fromitsbeautyandmystery”可知,从自然中汲取“知识”是合理的积极结果。故选A。22.句意:为了真正与自然连接,我们需要成为专注的观察者。listeners听众;speakers说话者;observers观察者;performers表演者。根据后文“focusonthesights,sounds,andsmellsaroundus”可知,这要求我们成为“观察者”。故选C。23.句意:许多科学家和探险家世世代代一直在探索自然的奥秘。havebeenexploring一直在探索,现在完成进行时;explore探索,一般现在时;explored探索,一般过去时;willexplore将要探索,一般将来时。根据“forgenerations”可知,这是从过去持续到现在并可能继续的动作,应用现在完成进行时。故选A。24.句意:这些小小的尊重之举有助于为子孙后代保护自然的美丽。help帮助,原形;helps帮助,三单;helped帮助,过去式;willhelp将要帮助,一般将来时。主语“Thesesmallacts”是复数,且陈述一般事实,应用一般现在时,故谓语动词用原形。故选A。25.句意:虽然我们许多人在室内花费更多时间,沉浸在屏幕中,但与自然世界连接的渴望依然强烈。engage参与;engaging参与,现在分词;engaged参与,过去分词;toengage参与,不定式。根据“spendmoretimeindoors…”可知,这里表示我们许多人在室内花费更多时间,此处是“spendtime+doing”结构,应用动名词“engaging”。故选B。26.句意:通过培养这种联系,我们不仅丰富了自己的生活,也为保护地球最珍贵的财富做出了贡献。nurturing培养;breaking打破;ignoring忽视;ending结束。根据“enrichourownlives”和“contributetothepreservation”可知,这是积极行为,应“培养”这种联系。故选A。27.句意:如果我们继续培育与自然的关系,我们将确保这些奇观在未来几个世纪里持续存在。Unless除非;If如果;Though尽管;Because因为。根据“wewillensurethatthesewondersendure”可知,前后是条件关系,应用“If”。故选B。28.句意:这种沟通带给我们谦卑,提醒我们自己是比自身更宏大的存在的一部分。bring带来,原形;brings带来,三单;brought带来,过去式;willbring将要带来,一般将来时。主语“Thiscommunication”是单数,且陈述一般事实,应用一般现在时,动词用三单形式“brings”。故选B。29.句意:激励我们采取行动保护地球及其奇观,确保后代也能体验到与自然沟通的喜悦和敬畏。communicating沟通;fighting斗争;competing竞争;struggling挣扎。根据“aweof…withnature”可知,这里表示确保后代也能体验到与自然沟通的喜悦和敬畏。故选A。30.句意:让我们倾听它脆弱的声音,尊重它的力量,并共同努力保护它。fragile脆弱的;strong强大的;rigid僵硬的;temporary临时的。根据“theyarealsocomplexandfragilesystemsthatrequireourcare”可知,大自然的声音是脆弱的。故选A。四、阅读理解Naturalwondersarenotonlysourcesofbeautybutalsovitaltothehealthofourplanet.Fromrainforests(热带雨林)thatproduceoxygentooceansthatregulatetheclimate,thesewondersplayacrucialroleinmaintainingtheEarth’secologicalbalance.Communicatingwithandprotectingthemisessentialforoursurvival.Rainforestsareoftencalledthe“lungsoftheEarth”becausetheyabsorbcarbondioxideandreleaseoxygen.Theyarealsohometomillionsofplantandanimalspecies,manyofwhicharefoundnowhereelseonEarth.However,rainforestsarebeingdestroyedatanalarmingrateduetodeforestationforagricultureandlogging.Thisdestructionnotonlythreatensbiodiversitybutalsocontributestoclimatechange.Oceansareanothervitalnaturalwonder.Theycoverover70%oftheEarth’ssurfaceandsupportcountlessmarinespecies.Oceansalsohelpregulatetheplanet’stemperaturebyabsorbingheatfromthesun.Unfortunately,oceanpollution,overfishing,andoceanacidification(海洋酸化)areputtingthesedelicateecosystemsatrisk.Toprotectouroceans,weneedtoreduceplasticwaste,supportsustainablefishingpractices,andaddressclimatechange.Mountainsarealsoimportantnaturalwonders.Theyprovidefreshwaterforbillionsofpeople,supportuniqueecosystems,andofferrecreationalopportunitiesforoutdoorenthusiasts.However,mountainregionsarefacingthreatssuchasdeforestation,soilerosion,andtheeffectsofclimatechange,includingmeltingglaciers.Protectingmountainsmeanspreservingtheirecosystemsandensuringthattheycontinuetoprovideessentialresourcesforfuturegenerations.31.Whyarerainforestscalledthe“lungsoftheEarth”?A.Becausetheyarehometomanyanimals.B.Becausetheyabsorbcarbondioxideandreleaseoxygen.C.Becausetheyarelargeandgreen.D.Becausetheyproducealotofrain.32.Whatisthemainthreattorainforests?A.Climatechange. B.Deforestationforagricultureandlogging.C.Oceanpollution. D.Soilerosion.33.HowdooceanshelpregulatetheEarth’stemperature?A.Byabsorbingheatfromthesun. B.Byproducingoxygen.C.Bysupportingmarinespecies. D.Byreducingplasticwaste.34.Whatdomountainsprovideforbillionsofpeople?A.Food. B.Freshwater. C.Timber. D.Minerals.35.Whatisthemainideaofthepassage?A.Thebeautyofnaturalwonders.B.Theimportanceofnaturalwondersandthethreatstheyface.C.Howtoexplorenaturalwonders.D.Thehistoryofnaturalwonders.【答案】31.B32.B33.A34.B35.B【导语】本文主要介绍了雨林、海洋、山脉等自然奇观对地球生态平衡和人类生存的重要性,同时也说明了这些自然奇观目前面临的威胁。31.细节理解题。根据“Rainforestsareoftencalledthe‘lungsoftheEarth’becausetheyabsorbcarbondioxideandreleaseoxygen.”可知,雨林被称为“地球之肺”是因为它们吸收二氧化碳并释放氧气。故选B。32.细节理解题。根据“However,rainforestsarebeingdestroyedatanalarmingrateduetodeforestationforagricultureandlogging.”可知,雨林面临的主要威胁是农业和伐木导致的森林砍伐。故选B。33.细节理解题。根据“Oceansalsohelpregulatetheplanet’stemperaturebyabsorbingheatfromthesun.”可知,海洋通过吸收太阳的热量来调节地球温度。故选A。34.细节理解题。根据“Mountainsarealsoimportantnaturalwonders.Theyprovidefreshwaterforbillionsofpeople...”可知,山脉为数十亿人提供淡

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