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雅思阅读判断题模拟试题（1）Whenwasthelasttimeyousawafrog?Chancesare,ifyouliveinacity,youhavenotseenoneforsometime.Eveninwetareasonceteemingwithfrogsandtoads,itisbecominglessandlesseasytofindthoseslimy,hoppingandsometimespoisonousmembersoftheanimalkingdom.Allovertheworld,andeveninremotepartsofAustralia,frogsarelosingtheecologicalbattleforsurvival,andbiologistsareatalosstoexplaintheirdemise.Areamphibianssimplyoversensitivetochangesintheecosystem?Coulditbethattheirrapiddeclineinnumbersissignalingsomecomingenvironmentaldisasterforusall?Thisfrighteningscenarioisinparttheconsequenceofadramaticincreaseoverthelastquartercenturyinthedevelopmentofoncenaturalareasofwetmarshland;homenotonlytofrogsbuttoallmannerofwildlife.However,asyet,therearenoobviousreasonswhycertainfrogspeciesaredisappearingfromrainforestsinAustraliathathavebarelybeentouchedbyhumanhand.Themysteryisunsettlingtosaytheleast,foritisknownthatamphibianspeciesareextremelysensitivetoenvironmentalvariationsintemperatureandmoisturelevels.ThedangeristhatplanetEarthmightnotonlyloseavitallinkintheecologicalfoodchain(frogskeeppopulationsofotherwisepestilentinsectsatmanageablelevels),butwemightbeincreasingouroutputofairpollutantstolevelsthatmayhavealreadybecomeirreversible.Frogscouldbeinadvertentlywarningusofacatastrophe.Anexampleofaspeciesoffrogthat,atfarasisknown,hasbecomeextinct,istheplatypusfrog.Likethewell-knownAustralianmammalitwasnamedafter,itexhibitedsomeverystrangebehaviour;insteadofgivingbirthtotadpolesinthewater,itraiseditsyoungwithinitsstomach.Thebabyfrogswereactuallybornfromoutoftheirmother'smouth.Discoveredin1981,lessthantenyearslaterthefroghadcompletelyvanishedfromthecrystalclearwatersofBooloumbaCreeknearQueensland'sSunshineCoast.Unfortunately,thisfreakofnatureisnottheonlyfrogspeciestohavebeenlostinAustralia.Sincethe1970s,nolessthaneightothershavesufferedthesamefate.Onetheorythatseemstofitthefactsconcernsthedepletionoftheozonelayer,awelldocumentedphenomenonwhichhasledtoasharpincreaseinultravioletradiationlevels.TheozonelayerismeanttoshieldtheEarthfromUVrays,butincreasedradiationmaybehavingagreatereffectuponfrogpopulationsthanpreviouslybelieved.Anothertheoryisthatworldwidetemperatureincreasesareupsettingthebreedingcyclesoffrogs.TRUE／FALSE／NOTGIVEN1.Frogsaredisappearingonlyfromcityareas.2.Frogsandtoadsareusuallypoisonous.3.Biologistsareunabletoexplainwhyfrogsaredying.4.Thefrogs'naturalhabitatisbecomingmoreandmoredeveloped.5.Attemptsarebeingmadetohaltthedevelopmentofwetmarshland.6.Frogsareimportantintheecosystembecausetheycontrolpests.7.Theplatypusfrogbecameextinctby1991.8.Frogsusuallygivebirthtotheiryounginanunderwaternest.9.EightfrogspecieshavebecomeextinctsofarinAustralia.10.Thereisconvincingevidencethattheozonelayerisbeingdepleted.11.Itisafactthatfrogs'breedingcyclesareupsetbyworldwideincreasesintemperature.AnswerKeys1.F2.F3.T4.T5.NG6.T7.T8.NG9.F10.T11.F雅思阅读判断题模拟试题(2)Practice2Almosteveryonewithorwithoutacomputerisawareofthelatesttechnologicalrevolutiondestinedtochangeforeverthewayinwhichhumanscommunicate,namely,theInformationSuperhighway,bestexemplifiedbytheubiquitousInternet.Already,millionsofpeoplearoundtheworldarelinkedbycomputersimplybyhavingamodemandanaddressonthe`Net',inmuchthesamewaythatowningatelephonelinksustoalmostanyonewhopaysaphonebill.Infact,sincethecomputerconnectionsaremadeviathephoneline,theInternetcanbeenvisagedasanetworkofvisualtelephonelinks.ItremainstoseeninwhichdirectiontheInformationSuperhighwayisheaded,butmanybelieveitistheeducationalhopeofthefuture.TheWorldWideWeb,anenormouscollectionofInternetaddressesorsites,allofwhichcanbeaccessedforinformation,hasbeenmainlyresponsiblefortheincreaseininterestintheInternetinthe1990s.BeforetheWorldWideWeb,the`Net'wascomparabletoanintegratedcollectionofcomputerizedtypewriters,buttheintroductionofthe`Web'in1990allowednotonlytextlinkstobemadebutalsographs,imagesandevenvideo.AWebsiteconsistsofa`homepage',thefirstscreenofaparticularsiteonthecomputertowhichyouareconnected,fromwhereaccesscanbehadtoothersubjectrelated`pages'(orscreens)atthesiteandonthousandsofothercomputersallovertheworld.Thisisachievedbyaprocesscalled`hypertext'.Byclickingwithamousedeviceonvariouspartsofthescreen,apersonconnectedtothe`Net'cangotraveling,orsurfing'throughaofthescreen,apersonconnectedtothe`Net'cangotraveling,or`surfing'throughawebofpagestolocatewhateverinformationisrequired.Anyonecansetupasite;promotingyourclub,yourinstitution,yourcompany'sproductsorsimplyyourself,iswhattheWebandtheInternetisallabout.Andwhatismore,informationontheInternetisnotownedorcontrolledbyanyoneorganization.Itis,perhaps,truetosaythatnooneandthereforeeveryoneownsthe`Net'.Becauseoftherelativefreedomofaccesstoinformation,theInternethasoftenbeencriticisedbythemediaasapotentiallyhazardoustoolinthehandsofyoungcomputerusers.Thisperceptionhasprovedtobelargelyfalsehowever,andthevastmajorityofusersbothyoungandoldgetconnectedwiththeInternetforthedualpurposesforwhichitwasintended-discoveryanddelight.TRUE／FALSE／NOTGIVEN1.EveryoneisawareoftheInformationSuperhighway.2.Us