Questions184-188refertothefollowingarticle. PresidentBarackObamahasissuedhiscalltoputglobalwarmingatthetopoftheinternational agenda,pledgingtopushforcoordinatedactionbytheworld'sbiggestcountriestotackleproblemofclimatechange. Inthespeech,theUSpresidentonTuesdaylaidoutathree-panplantodealwithclimatechangeusingthepowerofhisoffice. HeoutlinedastrategytocuttheUS'scarbonpollutionbyreducingemissionsfromcoal-firedpowerplants;topreparetheUSfortheimpactofclimatechange,such asthesuperstormthatravagedtheNewJerseycoastlinelastyear,andtoleadtheworldbyexampleincombatingchangingclimate. "Whilenosinglestepcanreversetheeffectsofclimatechange,thepresidentbelieveswehaveamoralobligationtoourkidstoleavethemaplanetthat'snotpollutedandWhiteHouseofficialsaid. Thecoalindustrysaidtheproposalscouldprovedevastating-----sharesinUScoalminingcompanieshavebeenfallingsharply-butMr.Obama'sspeechwasbeingwatchedcloselyaroundtheworld. InEurope,wheretheEurozonecrisishaspushedthe climatechangeagendafirmlyintothepoliticalbackground,environmentalcampaignerssaidtheyhopedMr.Obama'sspeechwouldpunctureargumentstacklingglobalwarmingasbadfortheeconomy.”IfyouhavegottheUSandChinamoving,thentheargumentthattheEUisgoingitaloneclearlydoesn'tstanduptoscrutinyanymore,"saidTomBrookesoftheEuropeanClimateFoundation. Thepresidentsaidhewouldseektoexpandnewandexistinginternationalinitiatives,includingbilateralinitiativeswithChina,Indiaandotherbigemissionscountries. WhatwasthemainpointofObama'sspeech?
A.to call for actions to tackle the problems of climate change B.to co-ordinate for the implementation of international agenda C.to lay out a plan for environmental problems D.to find reasons for recent global warming正确答案A
