·高二英语9-10单元同步练习

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1、·高二英语9-10单元同步练习Unit9SavingtheearthI.SpeakingTask1Ourearthisindanger!　　Directions:Herearethemajorproblemsfacingtheearth.Workwithyourpartnerandfigureoutthecausesandpossiblesolutions.ProblemsCausesSolutions1.waterpollution2.Trash/garbage3.Airpollution4.Deforestatio

2、n(采伐森林)5.Desertification(沙漠化)6.Hunger7.Deadlydiseases8._____________　　　　Task2What'sthebiggestproblem?　　Directions:Amongtheproblemslistedabove,whichdoyouthinkisthebiggestone?Ifyoupartnerdisagrees,thenyou'llhavetopersuadehim/her.　　　　Task3Polarbears'problem.Directi

3、ons:Gothroughthefollowingpassageandfinishoffthetasks.1.Completethetextwiththephrases:A.onaverage;B.waitfor;C.livethrough;D.beforcedto;E.liveawayfrom;2.Whyarepolarbearsgettingthinner?3.Isitgoodforbearstogetthinner?Aretheygoingtodieout?4.Besidespolarbears,whatothe

4、ranimalsdoesthewarminguphaveeffecton?5.Whatarethepossiblecausesoftheclimategettingwarmer?Whatcanbedonetostopit?　　Polarbearsaregettingthinner.Itisnotadietanditisnotbecausethereislessfoodtocatch.Itisbecausetheworldisgettingwarmer.　　Giantwhitebearsthatliveinthenort

5、hofCanadaareatthemomentimpatiently(1)icetoform.Theyneedtheicetoforma"bridge"totheirfood-seals.Sealsusually(2)landamongtheicebergs.However,astheclimatebecomeswarmer,winterisgettingshorterandseaiceisdecreasinginthearea.Thisismakingpolarbears'livesincreasinglydiffi

6、cult.　　Bearsneedtoeatasmuchfoodaspossibleinthewintertomakethemselvesfatenoughto(3)fivemonthswithoutfoodinthesummerandautumn.Duringthefive-monthice-freeseason,thebears(4)fast(绝食)."Foreveryweekabearhasnotbeenhuntingfoodonice,itis10kilogramslighter,"saidascientist.

7、　　Theaveragetemperatureoftheregionhasrisenfrom0.3to0.4degreescentigradesince1950.Withthechangeoftheclimate,theseaiceismeltingearlierinthespring.Thusthehuntingseasonforbearsisgettingshorter.Andthebears,(5),weighbetween80and85kilogramslessthantheydidin1985.II.Unde

8、rstandingthetext1.WhichisTRUEabouttheEarthSummit?A.It'sheldevery3yearsinStockholm,SwedenB.Sofarithasbeenheldtwice:in1972andin2002C.'Sustainabledevelopment'istheonlyth