资源描述:
《2020年7月全国自考英语阅读(一)试题及答案解析.docx》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯精品自学考料推荐⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯全国自考2018年7月英语阅读(一)试题课程代码:00595I.CarefulReading.(40points,2pointsforeach)Directions:Readthefollowingpassagescarefully.DecideonthebestanswersandwritethecorrespondinglettersonyourAnswerSheet.PassageOneQuestions1to5arebasedonthefollowingpa
2、ssage.Althoughnooneiscertainwhymigrationoccurs,thereareseveraltheories.OnetheoryisbaseduponthepremisethatprehistoricbirdsoftheNorthernHemispherewereforcedsouthduringtheIceAge,whenglacierscoveredlargepartsofEurope,Asia,andNorthAmerica.Astheglaciersmelted,thebirdscamebacktotheirhomela
3、nds,spentthesummer,andthenwentsouthagainastheiceadvancedinwinter.Intime,themigrationbecameahabit,andnow,althoughtheglaciershavedisappeared,thehabitcontinues.Anothertheoryproposesthattheancestralhomeofallmodernbirdswasthetropics.Whentheregionbecameoverpopulated,manyspecieswerecrowded
4、north.Duringthesummer,therewasplentyoffood,butduringthewinter,scarcityforcedthemtoreturntothetropics.Amorerecenttheory,knownasphotoperiodism,suggestsarelationshipbetweenincreasingdaylightandthestimulation,ofcertainglandsinthebirds’bodiesthatmaypreparethemformigration.Onescientisthas
5、beenabletocausemidwintermigrationsbyexposingbirdstoartificialperiodsofdaylight.Hehasconcludedthatchangesoccurinthebodiesofbirdsduetoseasonalchangesinthelengthofdaylight.1.Accordingtoonetheory,whentheglaciersdisappeared,birds_______.A.stoppedmigratingB.continuedmigrating1⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
6、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯精品自学考料推荐⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯C.beganmigratingagainD.migratedsouthandstayedthere2.Theauthorstatesthatbirdsleftthetropicsbecause_______.A.therewasnotenoughfoodthereinthewinterB.thereweretoomanybirdsC.thereweretoomanyglaciersD.therewastoomuchdaylight3.Whydidonescientistexposebir
7、dstoartificialdaylight?A.Becausehewantedtotesttherelationshipbetweendaylightandchangesintheseason.B.Becausehewantedtotesttherelationshipbetweenmigrationandtemperature.C.Becausehewantedtotesttherelationshipbetweendaylightandmigration.D.Becausehewantedtotesttherelationshipbetweendayli
8、ghtandadiseaseofthe