unit 4 more reading

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1、ThemysteryofhibernationMoreReadingQuizTimebeeantbutterflycowsheeppigrabbitmousecatlizardsnakecrocodilespiderbearbatfrogHowdowekeepwarm?PutonmoreclothesWearhats,scarves,andgloves.Dosomeexercise…Howdoanimalsgetthroughthewinter?penguinAdaptationNewthickerfurMigrationMovefromnorthtosouthCranestortois

2、eHibernationLooklikesleepybanger獾groundsquirrel黄鼠woodchuck土拨鼠bat蝙蝠hamster仓鼠nighthawk夜鹰bear熊hedgehog刺猬raccoon浣熊Warm-blooded(Halfhibernation)Cold-blooded(Deephibernation)beelizardsnakeearthworm蚯蚓mudturtle鳖frogtoad蟾蜍snail蜗牛ScanningThepurposeofhibernationistosurvive______________and______________.The

3、threethingsthatoccurtobatswhentheyhibernate:______________________________________________________________________________thecoldwintertheabsenceoffoodTheirpulseratesslowdown.Theirbreathingratesslowdown.Theirbodytemperaturesdrop.Thewayfrogsgetairintotheirbodiesduringhibernationis_________________

4、__________.Whilehibernating,bearsaredifferentfromotheranimals,becausetheydonot___________________________,but________________________.tobreathethroughtheirskinsappearasthoughtheyaredeadasthoughtheyareverysleepycreaturewherehowinterestingfactsBats123Frogs1bearsasafeplaceinacavehangupsidedownattheb

5、ottomofapondintheirdensliedownontheleavesbreathethroughtheirskins,nottheirmouthspulserates…bodytemperatures…breathingrates…digdeepintothemuddonotstiragaindonotappear…,but…Note-taking2TrueorFalseDuringhibernationbats’temperaturewillnotdrop.Frogswillstirduringthehibernation.Hibernatingbearslookasif

6、theyweredead.Duringhibernationfrogsbreatheboththroughtheirskinsandtheirmouths.Ifbearsaredisturbedduringhibernation,theycangetupveryquickly.FFTFFLooklikedeadHangupsidedownBatDigdeepintothemudatthebottomofapondNotstiragainBreathethroughskinsIncontrasttoothercreatures,hibernatingbearslooklikesleepy.

7、Theystayintheirdensfullofleaves.ConclusionWhenwintercomes,animalshavetheinstinct(本能)tohibernate.Differentcreatureshibernateinvariousplacesandindifferentwaysaswell.Whilehibernating,theyreducetheirbodymovementstofarbelow