课下天天练(四)阅读语言运用组合练姓名________班级________考号________时间：45分钟Ⅰ.阅读理解A[2023·武汉市质量检测]RobinHoodfamouslystolefromtherichandgavetothepoor.Newlyhatchedyoungbarnowls(仑鸮)dosomethingsimilar.Onaverage,barnowlsraisesixchicksatonce—andsometimesasmanyasnine.Buttheydon'tallhatchatthesametime,whichmeanstheolderowlsaregenerallylargerandhealthierthantheiryoungerbrothersandsisters.Aslongasthelittleowlsremaininthenest,they'recompletelydependentontheirparentsforfood.Inmanybirds,theoldestwouldsimplyoutcompetetheyoungest,butbarnowlsaredifferent.Itturnsoutthattheolder,healthierbirdssometimessharetheirmealswiththeirhungrysiblings(兄弟姐妹).“Inchicks,itisreallyrarelyobserved.Soit'squiteimpressivethatinthisgroup,thereisbehaviorshowingtheyworktogether，”addedevolutionarybiologistPaulineDucouretfromtheUniversityofLausanneinSwitzerland.Sheandherteamwantedtoknowhowthisuniquebehaviorevolved.Itcouldbeexplainedbythedirectbenefitsgainedthroughgroupwork,suchassharingfoodforgrooming(梳毛).Oritcouldbeexplainedbytheindirectbenefitsgainedfromhelpingothersthatarecloselyrelated—alsoknownas“kinselection”．Theyfoundthattheanswerwasboth.Youngerbirdsgroomedolderonesmoreoftenthanolderonesgroomedtheyoungsters.Andinreturn,theolderbirdsfedtheiryoungersiblings.Inaddition,olderowlswouldofferfoodtotheirhungrysiblingsratherthaneatthemselves,evenintheabsenceofgrooming.Ducouretsaidthatevolutionarybiologistsusuallycharacterizesiblingrelationshipsascompetitiveorevenopposed.Butremarkablycomplexexamplesofgroupworkcanstillbefoundamonganimalbrothersandsisters.Itseemsthatevennewlyhatchedbarnowlsknowthatsharingiscaring.Sothinktwicebeforedoingsomethingselfish.Afterall,youdon'twanttobedefeatedbyanewlyhatchedbird.1．Whatdoweknowaboutthelittlebarnowls?A．Theyarefedbyparentsinthenest.B．Theyarehatchedatthesametime.C．Theyhuntforfoodsoonafterhatching.D．Theycompetewithsiblingsforfood.2．Whatdoesthethirdparagraphserveas?A．Theexplanationofkinselection.B．Abackgroundofresearchers'study.C．Theco...
