【托福阅读】精选阅读真题长难句50句1、Laterexperimentsinwhichresearchersplayedrecordingsofsongstoyoungbirdsshowedjusthowprecisethisinfluencewas,manyofthemwouldlearntheexactpatternoftherecordingtheyhadheard.2、Thecrudesongofabirdrearedinisolationgivessomecluesastowhatthisroughideamaybethelength,thefrequencyrangeandthebreakingupintonotesareallaspectsofchaffinchsongsharedbetweennormalbirdsandthoserearedinisolation.3、Whateverthenatureofthelearningrulesinaparticularspecies,thereisnodoubtthattheyareeffective,itisveryunusualtohearawildbirdsingingasongwhichisnottypicalofitsownspeciesdespitethemanydifferentsongswhichoftenoccurinasmallpatchofwoodland.4、Chemicalanalysisofbonesenablesarchaeologiststodeterminetheproportionofmeattovegetablefoodsinthedietbymeasuringtheproportionofcalciumtostrontiuminancientbonebecausestrontiuminplaceofcalciuminbonescomesprimarilyfromingestedplants.5、Eachdwellinghadadifferentarrangementofthegiantbones,whichcamefromtheskeletonsoflong-deadanimalsretrievedfromthesurroundingareabyoccupantsofthesite,notfromanimalstheyhadrecentlyhunted.6、Inaprecedent-settingdecision,theFederalEnergyRegulatoryCommissionorderedthedamremovedafterconcludingthattheenvironmentalandeconomicbenefitsofafree-flowingriveroutweighedtheelectricitygeneratedbythedam.7、BuiltnearlyacenturyagotoprovidepowertolumberandpapermillsinthetownofPortAngeles,thesedamsblockedaccesstoupstreamspawningbedsforsixspeciesofsalmononwhatoncewasoneofthemostproductivesalmonriversintheworld.8、TheHetchHetchyDaminYosemiteNationalParkmightbetakendowntorevealwhatJohnMuir,thefounderoftheprestigiousenvironmentalorganizationSierraClub,calledavalley“justasbeautifulandworthyofpreservationasthemajesticYosemite.”9、Achancecollisionbetweentwocomets,orthegravitationalinfluenceofoneoftheJovianplanets—Jupiter,Saturn,Uranus,andNeptune—mayoccasionallyaltertheorbitofacometintheseregionsenoughtosendittotheinnersolarsystemandintoourview.10、ThesecometsappeartobedistributedinalldirectionsfromtheSun,formingasphericalshellaroundthesolarsystem,calledtheOortcloud,aftertheDutchastronomerJanOort.11、Afterthearrivalofhunter-gatherersinthesouthwesternregionofNorthAmerica,severalalternativetypesofagricultureemerged,allinvolvingdifferentsolutionstotheSouthwest’sfundamentalproblem:howtoobtainenoughwatertogrowcropsinanenvironmentinwhichrainfallissolowandunpredictablethatlittleornofarmingispracticedtheretoday.12、ThatfateactuallybefelltheMimbres,whostartedbyfarmingthefloodplainandthenbegantofarmadjacentlandabovethefloodplainastheirpopulationcametoexceedthefloodplain’scapacitytosupportit.13、However,whendroughtconditionsreturned,thatgambleleftthemwithapopulationdoublewhatthefloodplaincouldsupport,andMimbressocietycollapsedsuddenlyunderthestress.14、Onemorestrategywastoplantcropsatmanysiteseventhoughrainfallwaslocallyunpredictableandthentoharvestcropsatwhicheversitesdidgetenoughraintoproduceagoodharvestandtoredistributesomeoftheharvesttothepeoplestilllivingatallthesitesthatdidnothappentoreceiveenoughrainthatyear.15、Sanitationproblemscausedbylarger,moresedentarypopulationswouldhavehelpedtransmitdiseasesinhumanwaste,aswouldtheuseofanimaldungforfertilizer.16、Theincreaseinmanyofthesecamenotonlyfromthefactthatfewerpeopleweredyingfrominfectiousdiseaseandwerelivinglongerbutalsofromtheresultsofmodernlifestylesindevelopedcountriesandamongtheupp...
