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Unit2AnimalsandscienceLessonNineLet’ssing!Revisionbirdcolorful富有色彩的indifferentsizesandcolorssome…andothers…有的……，其余的……wing翅膀feat

her羽毛beak鸟喙insect昆虫nut坚果seed种子colorfulfeatherwinginsectnutseed富有色彩的羽毛翅膀昆虫坚果种子ReadandrememberListenandfindoutWhatdidscientistsinventafterstudyingb

irds?Readandremembercomeindifferentsizesandcolorsdifferentkindsof…beimportantfor…protectbirdsfromsun,windandwatergetoffthegroundflyintheairlandsa

felyReadandfinishthesentences1.Birdscomeindifferent________.Somearebigandsomearesmall.Birdscomeindifferent________.Somebirdsar

eblackandwhiteandothersare__________.2.Ifabirdhasalongthinbeak,iteats________ornectar.sizescolorscolorfulinsectsReadandanswer1.Whyarebirdbeaksdiffe

rent?2.Whyarefeathersimportantforbirds?WritethenameforeachbirdHoework:SurftheInternetandfindmorekindsofbirds