最新托福阅读真题Word文档格式.docx
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最新托福阅读真题Word文档格式.docx
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Birds,despitesharingcommonreptilianancestorswithpterosaurs,evolvedquiteseparatelyandhavebeenmuchmoresuccessfulintheirdominanceoftheair.Theyareanexampleofacommonthemeinevolution,themoreorlessparalleldevelopmentofdifferenttypesofbodystructureandfunctionforthesamereason—inthiscase,forflight.Althoughthefossilrecord,asalways,isnotcompleteenoughtodeterminedefinitivelytheevolutionarylineageofthebirdsorinasmuchdetailasonewouldlike,itisbetterinthiscasethanformanyotheranimalgroups.ThatisbecauseoftheunusualpreservationinalimestonequarryinsouthernGermanyofArchaeopteryx,afossilthatmanyhavecalledthelinkbetweendinosaursandbirds.Indeed,haditnotbeenforthesuperbpreservationofthesefossils,theymightwellhavebeenclassifiedasdinosaurs.Theyhavetheskullandteethofareptileaswellasabonytail,butintheline-grainedlimestoneinwhichthesefossilsoccurtherearedelicateimpressionsoffeathersandfinedetailsofbonestructurethatmakeitclearthatArchaeopteryxwasabird.Allbirdslivingtoday,fromthegreatcondorsoftheAndestothetiniestwrens,tracetheiroriginbacktotheMesozoicdinosaurs.
1.Whatdoesthepassagemainlydiscuss?
(A)Characteristicsofpterosaurwings
(B)ThediscoveryoffossilremainsofArchaeopteryx
(C)Reasonsfortheextinctionofearlyflyingvertebrates
(D)Thedevelopmentofflightinreptilesandbirds
2.Whichofthefollowingistrueofearlyreptilewings?
(A)Theyevolvedfromstronglimbmuscles.
(B)Theyconsistedofanextensionofskin.
(C)Theyconnectedthefrontandbacklimbs.
(D)Theyrequiredfingersofequallength.
3.Thewordliterallyinline3isclosestinmeaningto
(A)creating
(B)meaning
(C)relatedto
(D)simplified
4.Itcanbeinferredfromthepassagethatbirdswereprobablydominantintheskies
(A)intheearlyTriassicperiod
(B)beforetheappearanceofpterosaurs
(C)afterthedeclineofpterosaurs
(D)beforedinosaurscouldbefoundonland.
5.Theauthormentionsairplanesinline8inorderto
(A)illustratethesizeofwingspansinsomepterosaurs
(B)comparetheenergyneedsofdinosaurswiththoseofmodernmachines
(C)demonstratethedifferencesbetweenmechanizedflightandanimalflight
(D)establishthepracticalapplicationsofthestudyoffossils
6.ThewordTheyinline10refersto
(A)powerfulmuscles
(B)bodies
(C)jaws
(D)flyingreptiles
7.Accordingtothepassage,pterosaurswereprobablynotskillfulfliers(lines10-11)because
(A)oftheirlimitedwingspan
(B)oftheirdisproportionatelylargebodies
(C)theylackedmusclesneededforextendedflight
(D)climateconditionsofthetimeprovidedinsufficientwindpower
8.Inparagraph2,theauthordiscussesthedevelopmentofflightinbirdsasresultingfrom
(A)asimilarityinbodystructuretopterosaurs
(B)anevolutionfrompterosaurs
(C)thedominanceofbirdsandpterosaursoverlandanimals
(D)aseparatebutparalleldevelopmentprocesstothatofpterosaurs
9.Thewordclassifiedinline21isclosestinmeaningto
(A)perfected
(B)replaced
(C)categorized
(D)protected
10.WhichofthefollowinghelpedresearchersdeterminethatArchaeopteryxwasnotadinosaur?
(A)Itstail
(B)Itsteeth
(C)Theshapeofitsskull
(D)Detailsofitsbonestructure
11.WhatisthesignificanceofthediscoverythatwasmadeinsouthernGermany?
(A)Itisthoughttodemonstratethatbirdsevolvedfromdinosaurs.
(B)ItisproofthattheclimateandsoilsofEuropehavechangedovertime.
(C)Itsuggeststhatdinosaursweredominantinareasrichinlimestone.
(D)ItsupportsthetheorythatArchaeopteryxwasapowerfuldinosaur.
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Aviculturists,peoplewhoraisebirdsforcommercialsale,havenotyetlearnedhowtosimulatethenaturalincubation
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