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1、专题限时检测(二十二) 阅读理解C篇高分练(三)(共3篇，限时24分钟)A(2019·南通七市模拟)Australianmagpiescanunderstandwhatotherbirdsaresayingtoeachother,anewstudyhasfound.Theresearch,publishedinthejournalAnimalBehaviour,saysthemagpiehaslearnedthemeaningsofdifferentnoisyminercallsandessentiallyeavesd
2、rops(偷听)tofindoutwhichpredators(食肉动物)arenear.Noisyminers—asmall,nativehoneyeater—havedifferentwarningcallsforgroundbasedandaerial(飞行的)predators.Byplayingbothkindsofrecordingtoaseriesofwildmagpies,researchersobservedthemagpiesraisingtheirbeaks(喙)tothesky,ordroppi
3、ngtheirheadstotheground.Researchersattractedthemagpieswithcheese,thenplayedthenoisyminercalls,videotapingtheresults.Asacontrol,theyalsorolledalargeorangeballtowardsthemagpiestoseehowtheyordinarilytilted(倾斜)theirbeakstogroundthreats,andthrewtheballtoseehowtheyrea
4、ctedtoaerialthreats.Theresearchersrecordedanaveragemaximumbeakangleof29degreesforthethrownball,andanaveragemaximumofninedegreeswhenitwasrolled.Theminers'aerialwarningcausedanaveragemaximumbeakangleof31degrees,andthegroundwarningcausedanaveragemaximumof24.Oneofth
5、estudy'sauthors,DominiquePotvin,saidthemagpiesshowedanastonishinglevelofinsight.Magpiesandminersbroadlyfacethesametypesofpredatorsandthetwofrequentlyliveinthesameecosystem.Potvinsaidthishadencouragedthemagpies'learnedbehaviour.“Magpiesaregenerallyfoundonthegroun
6、dandnoisyminersaregenerallyfoundupintrees.Itpaysforthemagpietopayattentiontosomebodywhohasabetterviewofpredatorsthantheydo.”Shesaiditwasunclearwhetherotherbirdscoulddothesame,butitwashighlylikelyothermagpiesaroundAustraliaalreadydid.“Magpiesareaprettysmartgroup.
7、We'renotsureifthey'relearningthisfromothermagpiesorifthey'refiguringitoutontheirown,buttheabilityisthere.”Aspartoftheexperiment,researchersalsoplayedathirdcall:acommon,nonwarningcallfromacrimsonrosella.Theyfoundthemagpiesdidnotrespond.Potvinsaidthatwehadbeenacti
8、velyexploringanimalcognition(认知)research.“It'sagoodpieceofthepuzzle，”Potvinsaid.“Lookingatthesocialrelationshipsbetweenspeciesthatliveincommunities.”语篇解读：一项研究发现，澳大利亚喜
