听力场景5：人与社会——新闻与科普真题演练①2019-I卷-Text10公路着色保护幼鸟W:Hereisapieceofnewsforbirdlovers.Scientistshavepaintedalongroad,red,yellowandwhite.Theyhopetodiscouragetheseabirdsfromwanderingontothehighway.Theareaishometolargecrowdsofbirdsthatcometostayfortheseason.Youngbirdsareoftenattractedtothewarmroadsurfaceandgetkilledbythetraffic.BiologiststudentHannahtellsthebroadcaster.Theyoungsters’feathersarebrownincolor.Thedark-coloredroadsurfacemakestheyoungstershardtobenoticed.Asthenumberoftouristshasgrown,sohastheamountoftrafficontheroads.BiologistKristinsaystheplanistoseehowthebirdsrespondtothemulticoloredroadthissummer,andifitworks,theideacouldspreadtootherpartsofthecountry.18.Whatdidthescientistsdototheroad？A.Theyrepairedit.B.Theypaintedit.C.Theyblockedit19.Whyareyoungbirdsdrawntotheroadsurface？A.It'swarm.B.It'sbrown.C.It'ssmooth.20.Whatisthepurposeofthescientists'experiment？A.Tokeepthebirdsthereforawholeyear.B.Tohelpstudentsstudythebirdswell.C.Topreventthebirdsfrombeingkilled.
