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1、TPO20-30托福阅读修辞目的题集锦Paragraph1:ThestoryofthewestwardmovementofpopulationintheUnitedStatesis,inthemain,thestoryoftheexpansionofAmericanagriculture—ofthedevelopmentofnewareasfortheraisingoflivestockandthecultivationofwheat,corn,tobacco,andcotton.After1815improvedtrans
2、portationenabledmoreandmorewesternfarmerstoescapeaself-sufficientwayoflifeandenteranationalmarketeconomy.Duringperiodswhencommoditypriceswerehigh,therateofwestwardmigrationincreasedspectacularly."OldAmericaseemedtobebreakingupandmovingwestward,"observedanEnglishvis
3、itorin1817,duringthefirstgreatwaveofmigration.EmigrationtotheWestreachedapeakinthe1830's.Whereasin1810onlyaseventhoftheAmericanpeoplelivedwestoftheAppalachianMountains,by1840morethanathirdlivedthere.1.Whatisthepurposeofthestatement,“Whereasin1810onlyaseventhoftheAm
4、ericanpeoplelivedwestoftheAppalachianMountains,by1840morethanathirdlivedthere”?(3)OToillustratethatgenerallypopulationshiftsoccurrapidlyOTocorrectamistakenimpressionofAmericanagriculturefrom1810to1840OToemphasizetherangeandspeedwithwhichthewestwardmigrationoccurred
5、OTodemonstratedhowattractivetheAppalachianMountainsweretoAmericansParagraph2:PollensamplesfromfreshwaterlakesinSyriaandelsewheretellusforestcoverexpandedrapidlyattheendoftheIceAge,forthesouthwesternAsianclimatewasstillcoolerandconsiderablywetterthantoday.Manyareasw
6、erericherinanimalandplantspeciesthantheyarenow,makingthemhighlyfavorableforhumanoccupation.About9000B.C.,mosthumansettlementslayintheareaalongtheMediterraneancoastandintheZagrosMountainsofIranandtheirfoothills.Somelocalareas,liketheJordanRivervalley,themiddleEuphra
7、tesvalley,andsomeZagrosvalleys,weremoredenselypopulatedthanelsewhere.Heremoresedentaryandmorecomplexsocietiesflourished.Thesepeopleexploitedthelandscapeintensively,foragingonhillslopesforwildcerealgrassesandnuts,whilehuntinggazelleandothergameongrassylowlandsandinr
8、ivervalleys.Theirsettlementscontainexoticobjectssuchasseashells,stonebowls,andartifactsmadeofobsidian(volcanicglass),alltradedfromafar.Thisconsid
