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1、Helloeveryone!Todayourgroupisgoingtogiveapresentationaboutmammals.AsoneofspeciesevolvesfromlateJurassicperiod(侏罗纪晚期),mammalians’brainsaremoredevelopedandspecializedthananyotherclassofanimals.Mammalsarecharacterizedbymammaryglands(乳腺)thataremodifiedforproducingmilk.Allmammals
2、havespecialsweatglands(汗腺)andhair.Herearefivemammalswewanttosharewithyou:Thefirstofarepandas.Pandaisoneofthemostpreciousanimalsintheworld.Withwhiteandblackcolor,theseanimalsareveryfluffyandalittleclumsy.KnownasChinesetreasures,pandaisakindofanimalthatisendemictoChina,they’re
3、livinginSichuanprovince.Bambooistheirfavoritefood.Becauseofitscuteappearance,pandaisdeeplovedbytheworldpublic.1961,WWFestablisheditsmarkonthegiantpanda,thepandahasbecomeasymbolofthemostimportantspeciesconservation,alsoasagoodwillimportantrepresentativesinthediplomaticactivit
4、iesinChina.Thesecondoneispolarbear,thelargestterrestrialcarnivorousanimal.ThepolarbearisabearnativelargelywithintheArcticCircleencompassing(围绕)theArcticOcean,itssurroundingseasandsurroundinglandmesses.Itistheworld’slargestlandcarnivore(食肉动物)andalsothelargestbear.Ithasthickfa
5、tandhairtostaywarm,itswhiteappearanceonwhitesnowisgoodprotectivecoloration.Itcanmovebothonlandandsea,thusit’sanadvantageforapolarbeartocatchfoodinsuchanextremelyharshclimate.Neverthelessglobalwarminghasimpactontheicenowadays.Theicemeltsquicklyinthetwopoles,whichhasabadinflue
6、nceonpolarbears.Theirhomeshasbeendestroyed,thepreyisalsoinreduction.Wemusttakemeasurestoprotecttheseanimals,forthey’reindanger,they’rethetreasureofnature.ThethirdoneistheRoeDeer(狍子).TheprogramofDad,WhereAreWeGoinghasbeenverypopularamongmanypeople,oneoftheperiodprogramsshowed
7、thatthesefivepairfathersandchildrencametothenortheastrural,andsawacuteanimal——theroedeer,whichmakemuchmorepeopleawareofit.Theroedeerisalsocalleddwarfdeerorwildsheep,whichareherbivores(食草动物),feedonplants.Thefur’scolorofroedeerareusuallystrawyellow,thereiswhitehairedinroedeer’
8、sbaseofthetail,itlooksreallyfunny.Inaddition,themaleroedeerhavesetofantlers
