三分钟英语演讲稿精选（共4页）2400字.docx

三分钟英语演讲稿精选（共4页）2400字.docx

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三分钟英语演讲稿精选

　　whatisnature?

itseverythingthatexistsintheworldindependentlyofpeople,suchaspantsandanimals,earthandrocks,andtheweather.nowmoreandmorepeoplearefocusingonthenature.

　　itisnodoubtthatthenatureisimportanttoeveryhumanbeing.

　　nonature,nolife.

　　becauseofthesuppliesofthenature,wehavelivedhappilyforalongtime.

　　andwestartedtogaineverythingavailablefromthenature.

　　andthislastedsolongatime.

　　today,peoplehavediscoveredthatthenaturearoundisgettingworseandworse.whatisthreateningthenature?

airandwaterpollution,overharvestingofplantandanimalspecies,overpopulationandsoon.

　　overpopulationisthebiggestsourceofpollution.

　　letstakeoverpopulationasanexample.whatdoesoverpopulationfeellike?

whenwemoveslowlythroughthecityinataxi.

　　whenweenteracrowdedslumdistrict.

　　whenthetemperatureishighandwhentheairisthickwithdustandsmoke.

　　thestreetsarecrowdedwithpeople.

　　thestreetsseemalivewithpeople.

　　peopleeating.

　　peoplewashing.

　　peopletalking.

　　peoplesleeping.

　　peoplevisitingeachother,arguingandscreaming.

　　peoplerelievingthemselves.

　　peoplepushingtheirhandsthroughthetaxiwindows,begging.

　　peopleleadinganimals.

　　people,people,people,people.

　　aswedriveslowlythroughthecrowd,soundingthetaxishorn,thedust,heat,noiseandcookingfiresmadeitlikeascenefromhell!

iadmit,frightening.tothenature,overpopulationisabigproblem.

　　morepeople,morepollution.

　　andthebigpopulationisthreateningthenatureeverysecond.therapidriseinworldpopulationisnotcreatingproblemsonlyforthedevelopingcountries.

　　thewholeworldfacestheproblemthatrawmaterialsarebeingusedupatanincreasingrateandfoodproductioncannotkeepupwiththepopulationincrease.

　　peopleinrichcountriesmaketheheaviestdemandsontheworldsresources,itsfood,fuelandland,andcausethemostpollution.

　　ababybornintheunitedstateswilluseinhislifetime30timesmoreoftheworldsresourcesthanababyborninindia.

　　unlessallthecountriesoftheworldtakeunitedactiontodealwiththepopulationexplosiontherewillbemoreandmorepeoplefightingforashareoflessandlessland,foodandfuel,andthefuturewillbringpoverty,miseryandwartousall.formostofthedevelopingcountries,itisagoodideatocontrolthepopulationgrowth.