Unit22lesson86thelanguageofhoneybees课件
日期：2010-08-04 08:48
thefasterthedancewas()3Thenumberofwaggingdancesperminutetoldthedistancetothefeedingplace()4ThenProfessorVonFrischdidhisthirdexperiment，Lesson86Thelanguageofhoneybees(2)Beescanbedividedintothree________Manyofthemlive__largegroupsandmaketheirown_______Amongthemhoneybeehas___________scientistsowing____their_________way(thatinwhich)theycommunicateintheirhivesInall，there’retwokindsofdances:_________danceand_________danceAbeethathasfoundthefoodrepeatsitsdanceanditexcitesthe______________beestocopythe___________andatlasttheyflytothefeedingplaceDifferentdancesshowdifferent__________Acircledancemeansfoodis______whileawaggingdancemeansfoodis____________varietiesinnestsinterestedtoamazingcirclewaggingsurroundingmovementsdistancesnearfaraway()1VonFrischandhisco-workercountedhowmanytimesthebeesrepresentedthewaggingdanceduringoneminute()2Theydiscoveredthatthefartherawaythefeedingstationwas，whichwastodiscoverwhetherthewaggingdanceshoweddirect，
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