人口问题课件
日期：2010-07-15 07:34
I’mhungry!1Doyouthinktheworld’spopulationistoobig?2Whatkindofproblemswillwemeetiftherearetoomanypeopleintheworld?BusytrafficToocrowd!Whyaretheypoor?It’sdifficulttofindajob!Whatcanbedonetoslowdownthepopulationincrease?Onefamily，onebabySomethinghasbeendoneinourcountry，
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