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1、KeytoWatch,ListenandRead(Unit2)WarmupI.1.fur2.carnivore3.blubber4.Arctic5.marinemammalII.1.F2.B3.C4.G5.D6.A7.EPart1I.FTTTFII.(1)edge(2)inhospitable(3)thrive(4)mammal(5)survival(6)frozen(7)adjustments(8)insulated(9)reservesIII.1.Oneanimalactuallythrivesinthesefreezing,lon
2、elysurroundings.2.Thesemarinemammalsspendmostoftheirlivesonfrozenseas.3.Polarbearsdon’tenjoytheluxuryofanuninterruptedwinter.4.UnlikethehighArctic,there’snopermanenticepackhere.5.WhentheBaymelts,thebearsareforcedtoshore.Part2.I.1.Whentheweatherstartstoturncold,largenumbe
3、rsofthemgatheraroundthecoast.Atthistime,peoplecanobservethematcloserange.2.TheyareeagerlywaitingfortheBaytofreezesothattheycangobacktothefrozeniceandtheirfoodsource.3.Peopleuse“tundrabuggies”,aspecially-designedtruck,toseethem.4.Becausenootheranimalhuntsthem,andtheyareat
4、thetopofthefoodchain.II.1.private2.company3.adult4.considered5.conservationPart3I.CDBEAII.(1)parallels(2)concerned(3)stable(4)patterns(5)critical(6)existence(7)conducted(8)advancement(9)stability(10)length(11)impactPart4I.1.ACD2.BEII.(1)endangeredanimals(2)a(n)caringworl
5、d(3)a(n)keytounderstandingtheArctic(4)ensuretheirsurvival(5)conservationefforts(6)umbrellaspecies(7)thepolarbears’futureliesintheanswerstothesequestionsReading：ADCDDABtopkillers/anumbrellaspeciesThestabilityorthelengthofthetimeThesameenvironment(aspolarbears)Homelistenin
6、g:I:0.6,0.8/1.4,5.8/100/1,473/2008II:1:Greenhousegasesareproducedbycarandtruckexhaust,factorysmoke,andtheburningofcertainsubstancesforheatandlight.2:Theeffectsofglobalwarmingwillmostlikelyappearinanimalpopulationsfirst.3:Environmentalgroups,notonlygovernmentalonesbutalso
7、privategroups,areworkingtowardsthisgoal.4:TheUnitedNationshasorganizedinternationalgatheringstoapproachthisproblem,andhasproducedadocumentknownasthe“KyotoProtocol”.5:Theseriousdrawbackofthe“KyotoProtocol”isthatthisdocumentdoesn’tincludestrictenforcementproceduresforimple
8、mentingtheprogram.III:1—D–mating2---B---nesting3—A—flowering4---C—annualWarming-upUnit3:TheBlackDiamond
