What’sreallygreen?Mostofusareawarethatwemusttakecareoftheenvironment,andthemajority1ofustakestepstosaveenergyandreducewasteandpollution.Butrecently,some“greentruths”havebeenshowntobeonlyhalftrue,orevencompletelyfalse2.Herearesomecommonones.Whicharereallygreen?·Papershoppingbagsarebetterthanplasticones.Plasticbagscauselitterandareadangertowildanimals,whichmistakethemforfood.Ittakeshundredsofyearsforplastictobreakdown,butmuchlesstimeforpaper.Becauseofthis,peoplethinkpaperbagsarethebetterenvironmentalchoice.However,makingapaperbagusesfourtimesasmuchenergyasmakingaplasticbaganduptothreetimestheamount3ofwater.Theprocessalsoproducesmoregreenhousegases.Infact,bothkindsofbagsarebadfortheenvironment.So,takeareusablebagwithyouwhenyougoshopping.·Whenyouturnoffadevice4,itstopsusingpower.Whenweturnoffadevice,suchastelevision,itgoesintostand-bymode5.Devicesinthismodestillusepower,andolderdevicesinstand-bymodecanuseevenmore.Thishappensbecauseelectricitycontinuestoleakfromthedevice,evenwhenitisturned“off”.Tomakesureyourappliance6isinfactoff,removetheplugfromitspowersupply.·It’sbettertotakeashowerthanabath.Itdependson7howlongyouspendintheshowerandhowlargeyourbathis.Ifyouspendmorethaneightminutesinashower,you’lluseasmuchwaterasinabath—about50litres8ofwater.Therefore,thekeyistokeepyourshowertimeasshortaspossible.Environmentalawarenessisnowpartofdailylife.Butit’sworthcheckingcommonideasandopinionstoseewhat’sreallygreen.(節(jié)選自外研版新教材必修第二冊(cè)Unit6)詞匯積累1.majority/m?'d??r?ti/n．多數(shù)，大多數(shù)(人或物)2．false/f??ls/adj.不正確的，錯(cuò)誤的3．a(chǎn)mount/?'ma?nt/n．?dāng)?shù)量，數(shù)額4．device/d?'va?s/n．設(shè)備，儀器，裝置5．mode/m??d/n．(機(jī)器、設(shè)備的)運(yùn)行方式，狀態(tài)，模式6．a(chǎn)ppliance/?'pla??ns/n．家用電器，家用器具7．dependon依靠；取決于8．litre/'li?t?/n．升，公升Period2Lesson1RootsandShoots—ReadingComprehensionⅠ.匹配單詞1．firm A．tofireagunorotherweapon;tofiresthfromaweapon2．balance B．toincludesthasanecessarypartofanactivity，event，orsituation3．shoot C．theabilitytokeepsteadywithanequalamountofweightoneachsideofthebody4．involve D．totreatthingsthathavealreadybeenusedsothattheycanbeusedagain5．recycle E．a(chǎn)systemforcarryingpeopleorgoodsfromoneplacetoanotherusingvehicles，roadsetc.6．transport F．fairlyhard，noteasytopressintoadifferentshape答案1.F2.C3.A4.B5.D6.EⅡ.選詞填空makeadifference，inadditionto，takeaction，sufferfrom，can’tbebotheredtodosth1．Myolderbrothercouldn’tbebotheredtoplaywithme，soaflushofdisappointmentsweptoverme.2．Wordcamethatthemasterwassufferingfromastrangediseasethosedays.3．Thecitizensurgedthegovernmenttotakeactiontoprotecttheoldbuilding.4．Inadditiontotheflat，theyoungperformerhasseveralhousesinthatcountry.5．Iwonderwhethermylessonswillmakeadifferencetothechildrenlivingthere.Step1速讀——整體理解文意Ⅰ.明文章大意Whatdoesthepassagemainlytalkabout?A．TheroleofRoots&Shoots.B．ThefutureofRoots&Shoots.C．ThefeaturesofRoots&Shoots.D．ThehistoryofRoots&Shoots.答案AⅡ.悉層次結(jié)構(gòu)Matchthemainideawitheachparagraph.(1)Para.1A．Theappealforyourhelp.(2)Para.2B．Theintroductionto“Just-me-ism”．(3)Para.3C．TheestablishmentofRoots&Shoots.(4)Para.4D．Themeaningofitsname.答案(1)B(2)C(3)D(4)AStep2細(xì)讀——逐段獲取細(xì)節(jié)Ⅰ.Readpara.1anddothefollowingexercises.1．Fillintheformaccordingtoparagraph1.ExamplesLeavingthetap(1)runningwhileyoubrushyourteeth.Leavingalight(2)onwhenyougoout.Droppinglitterandnotbeingbotheredto(3)pickitup.PersonalopinionKnowingthosethingsare(4)wrongbutthinkingitdoesn’t(5)matter.Harm(6)Wastingalotofenergy.2.Whyis“Just-me-ism”aproblem?答案Ifmillionsofpeopleperform“Just-me-ism”，therewillbenobodytocareandlookaftertheenvironment.Ⅱ.Readpara.2anddothefollowingexercises.1．Fillintheformaccordingtoparagraph2.Roots&ShootsThetimeofitsestablishment(1)Intheearly1990sThefounder(2)Dr.JaneGoodallThepurposeTo(3)educateyoungpeople，frompre-schoolersto(4)universitystudents，sotheycanhelptobuildafuturethatis(5)secureandlivetogether(6)inpeacewithnature.2.WhichisNOTtrueaboutJaneGoodall?A．Sheisafamousscientistintheworld.B．Shecaresmoreabouttheanimalsthantheenvironment.C．Shethinksthatpeopleshouldliveinpeacewithnature.D．Shethinksjointeffortsareimportant.答案B3．Paraphrase：whichsentenceinpara.2carriesthesamemeaningwiththefollowingsentence?Apartfromherresearch，shehasbeentotallydevotedtoprotectingtheenvironment.答案Inadditiontoherresearch，shehasbeenwhole-heartedlycommittedtoenvironmentalprotection.Ⅲ.Readpara.3anddothefollowingexercises.1．WhyistheorganisationcalledRoots&Shoots?答案Becauserootsmoveslowlyunderthegroundtomakeafirmfoundation，andshootsseemsmallandweak，buttheycanbreakopenbrickwallstoreachthelight.2．Whatdoes“Hundredsandthousandsofrootsandshoots”refertointhislastsentence?答案Itreferstoyoungpeopleallaroundtheworldincludingyouandyourfriends.Ⅳ.Readpara.4anddothefollowingexercises.1．HowdoestheauthortellthereaderswhatRoots&Shootsisallabout?A．Bymakingcomparisons.B．Bygivingexamples.C．Byanalyzingcauses.D．Bymakingclassifications.答案B2．WhatdoesRoots&Shootsemphasize?A．Theimportanceofeachindividual.B．Theimportanceofwildlifeprotection.C．Theeducationofnextgeneration.D．Theurgencyofenvironmentalprotection.答案A3．What’sthepurposeofthequestionsinparagraph4?答案ToappealmorepeopletojoinRoots&Shoots.Ⅴ.Readthewholepassageagainanddothefollowingexercises.1．Whatisthetexttypeofthepassage?A．Narrativewriting(記敘文)．B．Practicalwriting(應(yīng)用文)．C．Argumentation(議論文)．D．Exposition(說明文)．答案D2．What’sthepurposeofthepassage?A．Tocalloneveryonetotakeactiontoprotectourenvironment.B．Totellreaderswhat“Just-me-ism”is.C．Topersuadeeveryonetoadopt“Just-me-ism”．D．TointroducetheestablishmentofRoots&Shoots.答案A3．Whatcanwelearnfromthetext?A．Everyindividualdoesn’tmatter.B．Everyindividualcanmakeadifferencetotheworld.C．Onlyafewpeoplesufferfrom“Just-me-ism”．D．Peoplecan’tlivetogetherinpeacewithnature.答案BStep3讀后——討論深度理解1．Thetextusesmanyparallelstructureswiththesamepatternofwordsandsentences.Underlinethesestructures.Discusswhythewriterusesthem.(Criticalthinking)2．Asteenagers，whatcanyoudotoprotecttheenvironment？(Creativethinking)Step4總結(jié)——課文語法填空Mostpeoplesufferfrom“Just-me-ism”．Youmayleavethetap1.running(run)whileyoubrushyourteeth，leavealightonwhenyougooutordropapieceoflitter2.butnotpickitup，whichis3.harmful(harm)toourworld.JaneGoodall,4.whoisthebest-knownexpertonwildchimpanzees，setupRoots&Shoots.Itspurposeis5.toeducate(educate)youngpeopletohelptobuildafuturethat6.is(be)secureandlivetogetherinpeacewithnature.Rootsmove7.slowly(slow)underthegroundtomakeafirm8.foundation(found)，andshootsseemsmallandweak，buttheycanbreakopenbrickwallstoreachthelight.Hundredsandthousandsofrootsandshootscansolvetheproblems，changetheworldandmakeita9.better(good)placetolivein.Roots&Shootsisallabout：thevalueandimportanceofeachindividual—human，animalorplant.JaneGoodallbelievesthateveryindividualhasaroletoplayandeveryindividualcanmake10.adifference.Step5解讀——長(zhǎng)句難句分析1．Well，sayyouleavethetaprunningwhileyoubrushyourteeth，leavealightonwhenyougooutoryoudropapieceoflitterandcan’tbebotheredtopickitup.[句式分析]本句是一個(gè)復(fù)合句。say之后為or連接的兩個(gè)賓語從句，其中whileyoubrushyourteeth和whenyougoout分別作兩個(gè)leave的時(shí)間狀語從句；can’tbebotheredtodosth表示“不愿意/懶得做某事”。[自主翻譯]例如，你刷牙的時(shí)候讓水嘩嘩地流，外出的時(shí)候不關(guān)燈，或者掉了一塊垃圾卻懶得撿起來。2．Ofcourse，itwouldn’tmatteriftherewerejustafewpeopleintheworld.[句式分析]本句含有一個(gè)if引導(dǎo)的虛擬條件句，表示與現(xiàn)在事實(shí)相反的假設(shè)，結(jié)構(gòu)為“if＋從句主語＋did/were...，主句主語＋would/could/should/mightdo...”。[自主翻譯]當(dāng)然，如果世界上只有幾個(gè)人這樣，那就無所謂了。3．ThewholepurposeofRoots&Shootsistoeducateyoungpeople，frompre-schoolerstouniversitystudents，sotheycanhelptobuildafuturethatissecureandlivetogetherinpeacewithnature.[句式分析]本句是一個(gè)并列復(fù)合句。第一個(gè)分句中Thewholepurpose是主語，toeducateyoungpeople是表語；so...分句中that引導(dǎo)的是定語從句，that在從句中作主語。[自主翻譯]“根與芽”的目的是教育年輕人，從學(xué)齡前兒童到大學(xué)生，使他們能夠?yàn)閯?chuàng)造一個(gè)安全、與自然和平共處的未來而貢獻(xiàn)力量。4．Doyouthinkyouhelptomaketheworldabetterplacewhenyoumakeasadpersonsmile，whenyoumakeadogwagitstail，andwhenyouwaterathirstyplant?[句式分析]本句是一個(gè)復(fù)合句。youhelptomaketheworldabetterplace是賓語從句；whenyoumakeasadperson...waterathirstyplant是三個(gè)并列的時(shí)間狀語從句。[自主翻譯]當(dāng)你使一個(gè)悲傷的人破涕為笑，讓一只狗搖尾巴，給一株干渴的植物澆水時(shí)，你覺得自己讓世界變得更美好了嗎？5．Dr.JaneGoodallbelievesthatthemostimportantthingisthat：“Everyindividualmatters.Everyindividualhasaroletoplay.Everyindividualmakesadifference.”[句式分析]本句是一個(gè)復(fù)合句。第一個(gè)that引導(dǎo)的是賓語從句，第二個(gè)that引導(dǎo)的是表語從句；表語從句中3個(gè)以“Everyindividual”開頭的句子構(gòu)子排比句。[自主翻譯]珍·古道爾博士認(rèn)為，最重要的是：“每一個(gè)個(gè)體都很重要。每一個(gè)個(gè)體都有自己要扮演的角色。每一個(gè)個(gè)體都能有所作為。Ⅰ.閱讀理解ASamTrullhasworkedwithwildlifeforalmost20years，butshefirstfoundhersoftspotforsloths(樹懶)in2013aftermovingtoCostaRicatoworkforasmallwildliferecoverycentercalledKidsSavingtheRainforest.Onarrivingthere，shetookalikingtoatwo-week-oldorphaned(孤兒的)slothnamedKermie.Slothshugeachotherforbothsafetyandcomfort，soTrullcaredforhimwithtenderlove，meals，andhugs.Soonotherbabyslothswerebroughtin.Itwasthenthatsherealizedthathelpingthecreaturessurvivewashertruecalling.Whentheslothsweregrownandhealthyenoughtodepart，Trullandherteambuilta19-foot-cubedcageneartherecoverycenterandleftthedooropen，sothefour-leggedfriendscouldcomeandgofreely.Theyspentenoughtimeeatingandexploringinthewildsothattheycouldabandonthecageforgood.Trullperformeditsuccessfullywithseveralslothswhoarenowlivinghealthilyinthejungle.Theirmovementsaretrackedthankstothecollarstheywear.Keepingslothswildandfreeisacomplicatedandexpensiveprocess.Tomakeitmoreeffective，Trullco-foundedtheSlothInstitutein2014.Inadditiontotheeducationprogramandtheresearchintosloths，theinstitutealsocooperateswithotherinstitutestobetterlearnhowtoprepareorphanedslothsbroughttotheinstituteforeventualre-entryintotherainforest.Theinstituteisnowgoingsmoothly.TrullpublishedhernewbookcalledSlothlove，whereshedocumentedtheslothsshehadsavedviaphotographs.Sheexplained，“Alotofpeopledon’tknowgettinghitbycarsandgettingcaughtinelectricwiresareparticularlydangeroustosloths.Peoplejustthinkthey’readorableandtakeselfieswiththem，unawarethattheslothisstressedandupset.”語篇解讀本文是一篇記敘文。文章介紹了野生動(dòng)物保護(hù)主義者薩姆·特魯爾來到哥斯達(dá)黎加致力于樹懶保護(hù)工作的感人事跡。1．WhatcanwelearnaboutTrullshortlyaftershegottoCostaRica?A．Shehelpedkidstorecover.B．Shecaredforslothsforcomfort.C．ShewasatalosshowtocureKermie.D．Shedecidedtoworkwithslothsforever.答案D解析細(xì)節(jié)理解題。根據(jù)第一段最后兩句可知，特魯爾來到哥斯達(dá)黎加不久，就意識(shí)到她的使命是幫助樹懶存活下去，即決定要永遠(yuǎn)從事幫助樹懶的工作。故選D。2．WhydidTrullandherteambuildthecageforthesloths?A．Tolimittheirmovements.B．Tomakethemrecoverquickly.C．Totrainthemtoadapttothewild.D．Toreunitethemwiththeirmothers.答案C解析細(xì)節(jié)理解題。根據(jù)第二段前三句可知，當(dāng)樹懶長(zhǎng)大并健康到可以離開時(shí)，他們建造籠子，并且讓門開著，這樣樹懶們就可以來去自由了。它們花了足夠的時(shí)間在野外進(jìn)食和探索，這樣一來它們就可以永遠(yuǎn)不再需要籠子。因此，他們打造這個(gè)籠子是為了訓(xùn)練樹懶適應(yīng)野外生活。故選C。3．WhatcanbeinferredabouttheSlothInstitute?A．Itisnowopentotourists.B．Itwillmainlyeducatethepublic.C．Itwillletgomorehand-raisedsloths.D．Itislargelysponsoredbyotherinstitutes.答案C解析推理判斷題。根據(jù)第三段第三句可知，除了教育計(jì)劃和樹懶研究以外，該研究所還與其他研究所合作，以便更好地了解如何為來到研究所的孤兒樹懶做好準(zhǔn)備，讓它們最終能重返雨林。所以樹懶研究所會(huì)放生更多親手撫養(yǎng)的樹懶。故選C。4．WhydoestheauthormentionTrull’swordsinthelastparagraph?A．Tostresshertalentforphotography.B．Todescribepeople’sloveforsloths.C．Tointroducethepopularityofherbook.D．Totellthereasonforpublishingherbook.答案D解析推理判斷題。文章末尾，特魯爾說：“許多人不知道，對(duì)樹懶來說，被汽車撞到和被電線困住尤為危險(xiǎn)。人們只是覺得它們很可愛，然后和它們自拍，卻沒有意識(shí)到樹懶所承受的壓力和不安。”這與出版《樹懶之愛》構(gòu)成因果關(guān)系，即作者引用特魯爾的話是為了解釋出版這本書的理由。故選D。B(2023·廣東高一期末聯(lián)考)Buildings，pollution，poorsoil，insects，andevencarcrashescanaddtotreeloss.However，between2016and2021，thecityofSeattleinWashingtonstatewasreportedtohavelostabout255hectaresoftreecovering，forwhichclimatechangewasblamed.ThencamethedriestsummeronSeattle’srecordbooksin2022.Thedrierconditionsandhottertemperatureshaveleftmanytreeswithbrownleaves，nakedbranches，andextremeseeding.Theseareallsignsoftreestress.AccordingtoNicholasJohnson，atreeexpertforSeattleCityParks，ifthiswarmingclimatecontinueswearegoingtohavealotoftreesdie.Justlikepeople，undertheheattreesgetweak.ResearchersfromFranceandAustraliastudiedtheeffectofhottertemperaturesandlessrainonmorethan3,100treesandplantsin164citiesacross78countries.Theyfoundabouthalfthetreesinthecitieswereexperiencingclimateconditionsbeyondtheirlimits.Theyalsofoundthatby2050nearlyalltreesplantedinAustraliancitieswillnotsurvive.It’snotthegradualchangebuttheseextremeswingsoftoomuchwater，toolittlewater，toomuchwind，andterriblestormsthataregoingtocausetheserapidchanges.In2005，HurricaneKatrinadestroyedabout10percentofthetreesinNewOrleans，Louisiana.Andin2021，HurricaneIdauprootedmanynewtreeplantings.Tosettletheproblemoftreeloss，non-nativetreeshavebeenbroughttocitiesforsometime.InthecityofBellevue，Washington，expertsaregrowingdifferentkindsoftreesspecificallyforclimatechange.Oncitygrounds，theyareplantingbabygiantsequoias，justafewcentimeterstall.ThegiantsequoiasarenotnativetothePacificNorthwestarea.Butthetreescandealwiththelackofrainandinsects.Oncethesetreesareestablished，theygrowincrediblyfast.Havingmanydifferentkindsandagesoftreesisimportanttokeepingurbanforestsalive.“Lifealwaysfindsaway，”saidNicholasJohnson.“AndinSeattle，peoplearehelpinglifefindaway.”eq\x(語篇解讀本文是一篇說明文，主要講的是樹木損失的原因和解決辦法。)5．Whatisthefirstparagraphmainlyabout?A．Naturalreasonsfortreeloss.B．TheterribleclimateinSeattleinrecentyears.C．ThebadconditionoftreesinSeattle.D．Thesignsoftreestress.答案C解析段落大意題。第一段第一句列出加劇樹木損失的因素，后面則說明了由于氣候變化西雅圖的樹木損失情況越來越嚴(yán)重，由此可知，第一段主要是關(guān)于西雅圖樹木的糟糕狀況，故選C。6．WhatisendangeringthetreesinAustraliacities?A．Buildings. B．Pollution.C．Carcrashes. D．Extremeclimate.答案D解析推理判斷題。根據(jù)第三段內(nèi)容可知，城市中一半的樹木都無法忍受極端天氣狀況，澳大利亞城市中的樹木到2050年可能全部死亡，由此可推知，是極端的氣候正在危及澳大利亞城市的樹木，故選D。7．Howdotreeexpertssolvetheproblemoftreedeath?A．Byimprovingplantingmethods.B．Bychangingthekindsoftrees.C．Bytreatingtreesasbabies.D．Byimprovingthesoilquality.答案B解析細(xì)節(jié)理解題。根據(jù)第五段“...non-nativetreeshavebeenbroughtto...”以及“...growingdifferentkindsoftrees...”可知，樹木專家通過引進(jìn)非本土的樹、種植不同品種的樹，即改變樹木的種類來解決樹木死亡的問題。故選B。8．WhichisNicholasJohnson’sattitudetothefutureoftreesincities?A．Positive. B．Negative.C．Doubtful. D．Uninterested.答案A解析觀點(diǎn)態(tài)度題。根據(jù)文章最后一段“AndinSeattle，peoplearehelpinglifefindaway.”可知“在西雅圖，人們正在為生命尋找出路”(此處“l(fā)ife”指代文中反復(fù)提到的“trees”)，因此，NicholasJohnson對(duì)城市樹木的未來持積極的態(tài)度，故選A。CSocialdistancingisnotanewconceptinthenaturalworld，whereinfectious(傳染)diseasesarecommonplace.Throughspecializedsensesanimalscandiscovercertaindiseasesandchangetheirbehaviortoavoidgettingill.In1966，whilestudyingchimps(猩猩)inaTanzaniannationalpark，zoologistJaneGoodallobservedachimpnamedMcGregorwhohadcaughtahighlyinfectiousvirus.Hisfellowchimpsattackedhimandthrewhimoutofthegroup.Inoneinstance，McGregorgotclosetochimpsinatree.Hereachedoutahandingreeting，buttheothersmovedawaywithoutabackwardglance.“Forafulltwominutes，oldMcGregorsatstill，staringafterthem，”Goodallnotesinher1971bookIntheShadowofMan.“It’sreallynotthatdifferenttohowsomesocietiesreacttodaytosuchamisfortune.”Notallanimalsaresoaggressivetowardtheirsickneighbors.Sometimesit’sassimpleasavoidingthosewhomayinfectyou.WhenKiesecker，aleadscientistinAmerica，studiedAmericanbullfroginthelate1990s，hefoundthatbullfrogscouldnotonlydiscoveradeadlysmellofinfectioninotherbullfrogs，buthealthymembersactivelyavoidedthosethatweresick.Bullfrogsdependonchemicalsignalstodeterminewhoissickornot.Caribbeanlobstersalsoshundiseasedmembersoftheircommunity，wellbeforetheybecomeinfectious.IttakesabouteightweeksforlobstersinfectedwiththedeadlyvirusPanulirusargusmininuceovirustobecomedangeroustoothers.Normallysocialanimals，lobstersbeginkeepingawayfromthediseasedasearlyasfourweeksafterinfection—oncethelobsterscansmellcertainchemicalsreleasedbysickindividuals.Overall，it’simportanttonotethat，unlikeus，animalsdon’trealizeiftheystayhome，theymightactuallyreducetheinfectionrate，”Kieseckerexplains.“Ashumans，wehavethatability.It’sabigdifference.”eq\x(語篇解讀本文是說明文。文章主要介紹了自然界中動(dòng)物保持社交距離的現(xiàn)象。)9．WhatcanwelearnaboutthechimpsfromGoodall’sobservation?A．Theykeptadistancefromoneanother.B．Theybecameaggressivewheninfected.C．Theinfectedavoidedcontactwithothers.D．Theinfectedwereforcedtoleavethegroup.答案D解析細(xì)節(jié)理解題。根據(jù)第二段前兩句可知，感染疾病的黑猩猩被迫離開群體，故選D。10．Whatdoestheunderlinedword“shun”inparagraph6probablymean?A．Avoid. B．Cure.C．Breakawayfrom. D．Getalongwith.答案A解析詞義猜測(cè)題。根據(jù)畫線單詞下文“Normallysocialanimals，lobstersbeginkeepingawayfromthediseasedasearlyasfourweeksafterinfection—oncethelobsterscansmellcertainchemicalsreleasedbysickindividuals.”可知，加勒比龍蝦在患病龍蝦具有傳染性之前，就會(huì)避開它們，畫線詞與A項(xiàng)“avoid(避開)”意思一樣，故選A。11．HowarehumansdifferentfromanimalsaccordingtoKiesecker?A．Humansaremoresensitivetovirus.B．Humansarelesslikelytogetinfected.C．Humanstreatinfectiousdiseasesinawiserway.D．Humanscandiscoverchemicalsignalsmorequickly.答案C解析推理判斷題。根據(jù)最后一段可知，根據(jù)Kiesecker的觀點(diǎn)，人類可以待在家里來避免傳染疾病，而動(dòng)物則是將患病的同伴趕出群體或遠(yuǎn)離感染者，由此可推知，人類和動(dòng)物的不同之處在于人類對(duì)待傳染病的方式更加明智。故選C。12．Whichmightbethebesttitleforthetext?A．HelpMeOutB．LeaveMeAloneC．StayAwayfromUsD．StayHomeStayHealthy答案C解析標(biāo)題歸納題。通讀全文尤其是第一段可知，文章主要介紹了自然界中的動(dòng)物通過保持社交距離避免傳染上疾病的現(xiàn)象。C項(xiàng)“離我們遠(yuǎn)點(diǎn)”符合文章主旨，為最佳標(biāo)題，故選C。Ⅱ.七選五CostaRicahasalong-standingcommitment(投入)totheenvironment.1Ithasdoubleditsforestcoveracrossthecountryinthelast30years.Inthe1940s，morethanthree-quartersofthecountrywascoveredinmostlyrainforestsandotherwoodlands.Then，betweenthe1940sand1980s，heavy，uncontrolledlogging(伐木)ledtoseriousdeforestation(濫伐)．2Realizingthegreatdamagethatwashappening，governmentofficialst