Unit5AdelicateworldUnderstandingideas课件-高中英语选择性

AdelicateworldAdelicateworldeasilybrokenordamaged易碎的，脆弱的Takecare!Don’tbreakmypreciousanddelicatechina.TofindoutwhathappenedtoMacquarieIslandTomakeaflowcharttoshowwhathumandid,theirpurposesandtheresultsandtalkabouttheeffectsofthesehumanactivitiesonMacquarieIslandTospuroursenseofenvironmentalprotectionfromchaostoconservationMacquarieIslandWhatanimalscanyouseeinthepicture?Whatkindofchangeswouldtakeplaceifcats,ratsandrabbitswereintroducedtoanenvironmentlikethis?Fromwhataspectsdoesthewriterintroducetheislandinpara.1?ADDYOURTITLEHEREMacquarieIsland(麦夸里岛)LocationShapeLandscapeTitleInhabitantsinthe____________PacificOceanbetween_______________and_______shapecausedby_______windand______________________and________contrast___________a_________and________beauty________and_______penguins,_________and_________AustraliaAntarcticaPacificOceanSouth-westAustraliaAntarcticaADDYOURTITLEHEREMacquarieIsland(麦夸里岛)LocationShapeLandscapeTitleInhabitantsinthe____________PacificOceanbetween_______________and_______shapecausedby_______windand______________________and________contrast___________a_________and________beauty________and_______penguins,_________and_________South-westAustraliaAntarcticalongthinstrongstormyseasADDYOURTITLEHEREMacquarieIsland(麦夸里岛)LocationShapeLandscapeTitleInhabitantsinthe____________PacificOceanbetween_______________and_______shapecausedby_______windand______________________and________contrast___________a_________and________beauty________and_______penguins,_________and_________South-westAustraliaAntarcticalongthinstrongstormyseasgreengrassbarerockdramaticallyUNESCOWorldHeritageSiteroyalkingelephantsealsACTION(S)HumansarrivedonMacquarieIsland.PURPOSE(S)Tolivethere.Tocontroltheratsandmice.RESULT(S)Ratsandmicewerebroughttherebyaccident,and_______.Rabbitsmultipliedandcausedsoilerosion,and________.Time18101891inthe1980sinthe1970s2014HumansarrivedonMacquarieIsland.Tolivethere.Ratsandmicewerebroughttherebyaccident,and________________________________________________________________________theytookovertheisland,eatingthebird’seggsandattackingbabybirds.ACTION(S)PURPOSE(S)RESULT(S)Tocontroltheratsandmice.Catswerebroughttotheisland.Thecatsdevelopedanappetiteforthebirds.Time1810Rabbitsmultipliedandcausedsoilerosion,and________________________________________________________________________________________________________________________________________Rabbitswereintroducedtotheisland.Toprovidefoodforhumans.theexplodingrabbitpopulationprovidedplentifulfoodforthecats.Thisledtomorecatshuntingthebirds.Asaresult,parakeetsdiedoutin1891.ACTION(S)PURPOSE(S)RESULT(S)Time1891Aviruswasreleasedontotheisland.Toremovealltherabbitsfromtheisland.Substantialreductionofrabbitpopulationledtocatskillingmorenativebirds.ACTION(S)PURPOSE(S)RESULT(S)Trapsanddogswereused.Tocatchthecats.Thedepartureofthecatsresultedinanincreasingpopulationofratsandmice.Andtherabbitpopulationexplodedonceagain.Timeinthe1980sinthe1970sPoisonsanddogswereused.Toremovealltheremaininginvadingspecies.Theislandwaspest-freeanditsecologyisontheroadtorecovery.ACTION(S)PURPOSE(S)RESULT(S)Time2014Canyoudrawaflowchart?viruslessfoodkillcatchWhilethecat’saway,themicewillplayimmunitykillDecidewhetherthefollowingstatementsareTrue(T)orFalse(F).1.MacquarieIslandisaUNESCOWorldHeritageSitebecauseofitswildandnaturalbeauty.(

)2.Humansunintentionallybroughtrabbits,ratsandmicetotheisland.

(

)3.Humansbroughtcatstotheislandtocontroltheratsandmice.(

)4.Therabbitshadnoimmunitytothevirusreleasedontotheisland,sotheydiedoutsoon.(

)TFTFanandtheirnumbersexplodedonceagainTFhardA.meaningthatthenumberofcatsalsoincreasedB.killingupto60,000eachyearC.givingitawildandnaturalbeautyD.solvingonceandforallE.eatingthebirds’eggsandattackingbabybirds.1.Thegreengrassandbarerockofitslandscapecontrastdramatically,_________.2.Ratsandmicequicklytookovertheisland,________.CCompletethesentences.E3.Theexplodingrabbitpopulationprovidedplentifulfoodforthecats,_________.4.Thecatsinconsequenceturnedtheirattention–andtheirstomachs–backtothenativebirds,_________.5.Theincidentmadeitclearthattherat,mouseandrabbitproblemneeded,_________.A.meaningthatthenumberofcatsalsoincreasedB.killingupto60,000eachyearC.givingitawildandnaturalbeautyD.solvingonceandforallE.eatingthebirds’eggsandattackingbabybirds.ABDADDYOURTITLEHEREToremovetherabbits.Tofightagainstthebirds.Tocontroltheratsandmice.Tobeasourceoffoodforhumans.

Whywerecatsbroughttotheisland?ADDYOURTITLEHEREItbrokethebalance.Itmadenodifference.Itwasacorrectdecision.Itwashelpfulfortheecosystem.

Whatcanweinferabouttheintroductionofrabbits?ADDYOURTITLEHEREToanalysehowMacquarieIslandwassavedfromdestruction.ToinformreadersofthechaoscausedonMacquarieIslandbyhumans.ToentertainreaderswithafunnystoryaboutwhathappenedonMacquarieIsland.Tosuggestwaysinwhichanecosystemcanbeprotected.Choosetheauthor’spurposeinwritingthepassageandgiveyourreasons.HumansbeautySummarychaosconservationharmonyHumansbrokethe_______ofthe________balanceecosystemHumanstriedto_________the_______conserveecosystemBelowisasummaryofthetextwithsomecontentmissing.MacquarieIslandisaUNESCOWorldHeritageSite.Itsnativeinhabitants1.________(exist)inperfectforthousandsofyears.Buttheisland’smorerecentstorytellsadifferentstory,whichbeginin1802,2.________humansarrived.Ratsandmice3.________(bring)thereaccidentally.Becausetheyatethebirds’eggsandattackedbabybirds,catswerebroughttocontrolthem.haveexistedwhenwerebroughtUnfortunately,thecatssubsequentlydeveloped4.__________appetiteforthebirds,too.Meanwhile,rabbitswereintroducedasasourceoffoodforhumans.Theymultiplied5._________(rapid),atethenativevegetationanddugholes,whichcausedsoilerosion.Theyalsobecame6.__________(plenty)foodforthecats,andthecatshuntedbirds.Theparakeetsdiedout