【问题】 AboutabillionbirdsdiefromflyingintobuildingseachyearinNorthAmerica.Suspicionshavebeenthatbirdsmayregardtheopenareasbehindglassassafepassageways.Ortheymaymistakethereflectedtreesfortherealthing. Researcherswouldliketoreducecollisions，whichrequiresasolidund

AboutabillionbirdsdiefromflyingintobuildingseachyearinNorthAmerica.Suspicionshavebeenthatbirdsmayregardtheopenareasbehindglassassafepassageways.Ortheymaymistakethereflectedtreesfortherealthing. Researcherswouldliketoreducecollisions，whichrequiresasolidunderstandingaboutwhatmakesabirdmoreorlesslikelytodiebycrashingintoabuildinginthefirstplace. "Therewasrelativelylittleknownatabroadscale.Previousstudieswereatonesmallstudysite."JaredElmore，agraduatestudentinnaturalresourceecologyandmanagementatOklahomaStateUniversity.Soheandhiscolleaguesusedapreviouslycreateddatasetofbuildingcollisionsforbirdsat40sitesthroughoutMexico，CanadaandtheU.S. Thefirstfindingwasobvious：biggerbuildingswithmoreglasskillmorebirds.Butthedetailsweremoreremarkable."Wefoundthatlifehistorypredictedcollisions.Migrants（候鸟），insect-eatersandwoodland-inhabitingspeciescollidedmorethantheircounterparts（同类）." Mostmigratoryspeciestravelatnight，whenlightsnearbuildingscandistractordisorient（使迷失方向）them.AndElmorethinksthatinsect-eatingbirdsmightbeattractedtobuildingsbecausetheirinsectprey（猎物）isattractedtothelights.Hesuspectsthatwoodlandspeciesgettooledbythereflectionsoftreesandbushesinthewindows.TheresultsarcinthejournalConservationBiology. Byunderstandingwhichbirdsaremorelikelytocollidewithbuildings，researcherscanperhapsdeterminethebestwaytoadaptbuildings，ortheirlighting，tohelppreventsuchaccidents.Andbyknowingrisks，alongwithmigrationtimingandbehavior，buildingmanagerscanbetterpredictwhenbirdsareattheirgreatestdanger-andimprovelightingstrategiesaccordingly. Elmore'snextprojectwilluseradartohelppredictbirdmigrations."Ithinkthatwouldmaybegoalongwayintermsofprovidinginformationtopeople，tothepublic，tobuildingmanagers，onwhentheycangetthemostbenefitintermsoflights-outpolicies."（1）Whatisthepossiblereasonforbirds'crashingintobuildings？______A.Theydidn'tseethebuildings.B.Theytookreflectionsforreality.C.Theyassumedthewindowstobeopen.D.Theyconsideredbuildingsassaferoutes.（2）WhatisJaredElmore'sstudydifferentfromthepreviousones？______A.ItcreatedanewdatasetB.Itwentbeyondnationalborders.C.Itcoveredawiderrangeofsites.D.It studiedsomespecificbirdspecies.（3）WhatwasthemostnoticeablefindingofJaredElmore'sstudy？______A.Migratoryspeciestravelatnight.B.Birdstendtobemisledbyglasses.C.Biggerbuildingscausemorecollisions.D.Birds，livinghabitsgiverisetocollisions.（4）Whichofthefollowingcanhelpreducebirdcollision？______A.Adjustthelighteningsystem.B.Attachradarstoeachbuilding.C.Adoptstrictlights-outpolicies.D.Banusingglassesonbuildings.

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