ANSWERKEYforTOEFLREADINGTPO(1-19),OG,OfficialModelTest,esthuangxiaohTPO1.............................................................................................................................................4Groundwater............................................................................................................................4TheOriginsOfTheater...............................................................................................................4TimberlineVegetationOnMountains..........................................................................................5TPO2.............................................................................................................................................6TheOriginsOfCetaceans............................................................................................................6DesertFormation......................................................................................................................9EarlyCinema...........................................................................................................................12TPO3...........................................................................................................................................15Architecture............................................................................................................................15DepletionoftheOgallalaAquifer...............................................................................................15TheLong-TermStabilityofEcosystems......................................................................................16TPO4...........................................................................................................................................17DeerPopulationsofthePugetSound.........................................................................................17CaveArtinEurope........................................
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