Unit+5+A+delicate+World+Understanding+ideas+课件【知识精讲精研】高中外研版（2019）选择性必修第二册

新标准《英语》高中选择性必修第二册UnderstandingideasPre-readingMACQUARIEISLAND:

from

ChaostoConservation/'keɪɒs/n.混乱；紊乱astateofcompleteconfusionandlackoforder

/kɒnsə'veɪʃn/n.theprotectionofthenaturalenvironment（对自然环境的）保护

What'sthemainideaofthepassage?A．MacquarieIslandwassavedfromdestruction.B．AllkindsofcreaturesliveinharmonyinMacquarie

Island.C．HowdidmankinddestroyMacquarieIsland?D．MacquarieIsland'suniquescenery.Fast-readingReadthepassagequickly.Choosethemainideaanddevidethepassageinto3parts.Divideitintothreeparts,andgetthemainideaofeachpart.ReadforstructurePart1Para_____

Part2Paras_____ Part3Paras_____ Anintroductiontotheisland12-34-6the_______________oftheislandthe________________oftheislandchaosconservation1.Whatcanwelearnfromthefirstparagraph?A.MacquarieIslandisaUNESCOWorldHeritageSite

becauseofitswildandnatural

beauty.B.Thegreengrassandbarerockofitslandscapeon

MacquarieIslandformitsbeauty.C.Royalpenguins,kingpenguinsandelephant

seals

liveinperfectharmonynow.D.ThewriterisstandingonMacquarieIsland

enjoying

itswildandnaturalbeauty.Readpara.1andfinishthefollowingtasks.While-readingReaddetails1IamstandingonMacquarieIsland,intheSouth­westPacificOcean,halfwaybetweenAustraliaandAntarctica.Strongwindsandstormyseashavehelpedsculptitslong,thinshape.Thegreengrassandbarerockofitslandscapecontrastdramatically,givingitawildandnaturalbeauty.NovisitorwouldthinkitsurprisingthattheislandisaUNESCOWorldHeritageSite.Norwouldtheyfailtoimaginehowitsnativeinhabitants,includingroyalpenguins,kingpenguins,andelephantseals,existedinperfectharmonywiththeirnaturalhabitatforthousandsofyears.inthemiddle中间的vt.塑造=buildadj.赤裸的与……和谐共处failv.失败;不及格;出故障;使失望;使无能为力failtodo未能…；不能…failin在……方面失败；考试不及格1.Ifailedtopersuadehimoutofsmoking.2.Hefailed(in)thecompetition,feelingsad.3.Theexaminersfailedoverhalfthecandidates.4.Thebrakesonmybikefailedhalfwaydownthehill.5.Hereyesightis

failing

owingtousingtheInternettoomuch.6.Whenhelosthisjob,hefelthehadfailed

hisfamily.7.Wordsfailmetoexpressmygreatgratitude.8.Thecropsfailedagainlastsummer.9.Manysmallcompanieshavefailed

duringthepandemic.未能做成某事不过关；不及格判定不合格出故障健康衰退使失望无能为力歉收破产2.HowdidratsandmicegettoMacquarieIsland?A．Onpurpose.B．Byaccident.C．Theycamebythemselves.D．Theywerethere.Readpara.2andfinishthefollowingtasks.2Buttheisland’smorerecenthistorytellsadifferentstory.It’satragicstorythatbeganin1810whenhumansarrivedontheisland.Intheirshipstheyunknowinglybroughtratsandmice.Thesesmallanimalsquicklytookovertheisland,eatingthebirds'eggsandattackingbabybirds.Catswerebroughttotheislandtocontroltheratsandmice.Unfortunately,thecatssubsequently

developedanappetiteforthebirds,too.adv.不知不觉地接管

被引进afterwardsadv.后来

对……产生食欲说的情况迥然不同3.

Whatwasthecauseofsoilerosion?A.Rabbitswereintroducedtotheisland,

multiplying

rapidlyanddiggingholes.B.Parakeets,nativetotheisland,diedoutbecauseof

humans’activities.C.Theinereasing

numberofcatsledtomore

cats

huntingthebirds.D.Ratsandmice

multipliedrapidlyanddug

holes

withoutcats.Readpara.3andfinishthefollowingtasks.3Meanwhile,rabbitswereintroducedtotheislandasasourceoffoodforhumans.Looseontheisland,theydidwhatrabbitsdobest—theymultipliedrapidlyandbeganeatingthenativevegetationanddiggingholes,whichcausedsoilerosion.Theexplodingrabbitpopulationprovidedplentifulfoodforthecats,meaningthatthenumberofcatsalsoincreased.Thisinturnledtomorecatshuntingthebirds.Theendresultwasthatparakeets,oncelargeinnumberandnativetotheisland,diedoutin1891.adv.与此同时

被引进

作为……

散居

快速繁殖

水土流失

反过来

灭绝

原产于4.Whichmethod

toremove

therabbitsfromthe

island

wasusedeffectivelyinthe1970s?A.Alargenumberofdogswerereleased.B.Alargenumberofbirdswerereleased.C.Aviruswasdeliveredontotheisland.D.Alargenumberofcatswerereleased.Readpara.4andfinishthefollowingtasks.4EvenafterMacquarieIslandbecameanofficialnaturereserveinthe1970s,therabbitsremainedoutofcontrol.Expertsfeltitnecessarytocomeupwithaplantoremovealltherabbitsfromtheisland.Withthisgoalinmind,aviruswasreleasedontotheisland.Butalthoughtheviruscausedtherabbitpopulationtodecreasefrom130,000toaround10,000,italsomeantlessfoodforthecats.Thecatsinconsequenceturnedtheirattention—andtheirstomachs—backtothenativebirds,killingupto60,000eachyear.Inthe1980s,trapsanddogswereusedtocatchthecats.ThelastMacquarieIslandcatwascaughtin2000.

自然保护区

失去控制

从……中清除

怀着这个目标

下降到……

因此；结果=asaresult5.Whatcausedthemassdeathofpenguins?A．Thevirus.B．Increaseinrats.C．Landcollapse.D．Lackofimmunity.Readpara.5andfinishthefollowingtasks.5Butasthesayinggoes,“Whilethecat’saway,themicewillplay.”Withthedepartureofthecatsfromtheisland,themouseandratpopulationstartedtoincrease.Andrememberthose10,000orsorabbits?Itturnedoutthattheydevelopedanimmunitytothevirus,andtheirnumbersexplodedonceagain.Then,in2006,therabbits’diggingcausedsomelandtocollapse,andkilledasubstantialnumberofpenguins.Thisincidentmadeitclearthattherat,mouseandrabbitproblemneededsolving

onceandforall.

俗话说……n.离开

证明是……

产生免疫力……

增加

表明……

一劳永逸地6.Whatweredogstrainedtodo?A．Howtodroppoisonfromhelicopters.B．Howtoremovethelastremaininginvasivespecies.C．Givetheislandahappyending.D．Findeverypreywithoutharmingthelocalanimals.Readpara.6andfinishthefollowingtasks.6So,IamhereonMacquarieIslandtoparticipateintheprogrammetotacklethisveryproblem.Thefirststepinvolvedpoisonbeingdroppedfromhelicopters.Thenextstepistoremovethelastremaininginvadingspecies,andthat’swhereIcomein—withmydogs.Theyhavebeentrainedtofindeverylastone,withoutharmingthenativeanimals.Thisinterventionisalong,much－delayedendingtoasadstory,butwehumansoweittotheislandtogiveitahappyending.Postscript:In2014,MacquarieIslandwasdeclaredpest­freeandtheisland’secologyisfinallyontheroadtorecovery.

处理……

入侵物种

干预，介入

延迟

无虫害

在通往……的路上

归咎于……Organiseinformationfromthepassageandcompletetheflowchart.ACTION(S)HumansarrivedonMacquarieIsland.PURPOSE(S)Tolivethere.Tocontroltheratsandmice.RESULT(S)Ratsandmicewerebroughttherebyaccident,and_______.Rabbitsmultipliedandcausedsoilerosion,and________.TimeHumansarrivedonMacquarieIsland.Tolivethere.Ratsandmicewerebroughttherebyaccident,and________________________________________________________________________theytookovertheisland,eatingthebird’seggsandattackingbabybirds.ACTION(S)PURPOSE(S)RESULT(S)TimeIn1810ACTION(S)PURPOSE(S)RESULT(S)Tocontroltheratsandmice.Catswerebroughttotheisland.Thecatsdevelopedanappetiteforthebirds.TimeAfter1810Rabbitsmultipliedandcausedsoilerosion,and________________________________________________________________________________________________________________________________________Rabbitswereintroducedtotheisland.Toprovidefoodforhumans.theexplodingrabbitpopulationprovidedplentifulfoodforthecats.Thisledtomorecatshuntingthebirds.Asaresult,parakeetsdiedoutin1891.ACTION(S)PURPOSE(S)RESULT(S)Time1810-1891Aviruswasreleasedontotheisland.Toremovealltherabbitsfromtheisland.Substantialreductionofrabbitpopulationledtocatskillingmorenativebirds.ACTION(S)PURPOSE(S)RESULT(S)Trapsanddogswereused.Tocatchthecats.Thedepartureofthecatsresultedinanincreasingpopulationofratsandmice.Andtherabbitpopulationexplodedonceagain.Timeinthe1980sinthe1970sPoisonsanddogswereused.Toremovealltheremaininginvadingspecies.Theislandwaspest-freeanditsecologyisontheroadtorecovery.ACTION(S)PURPOSE(S)RESULT(S)Time2014thechaosoftheisland1.Whatwasbroughttotheisland?2.Whathappenedaftertheyreachedtheisland?ReadPart2(paras.2-3)andfinishthefollowingtasks.While-readingReaddetailsTime1810After18101810-1891Inthe1970sInthe1980sAtpresentReadPart2(paras.2-3)andfinishthefollowingtasks.thechaosoftheisland1.Whatwasbroughttotheisland?rats&micecatsrabbits2.Whathappened