- Atmosphericcarbondioxidelevelshavenowtouched400partspermillion—andkeeprising.Sowho'sresponsible?Scientistspegthestartofthisseeminglyinexorablerisetoabout1750,whenpeoplestartedburningcoaltorunsteamengines.ButtheCO2increasealsostemsfromactivitiesl...
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- HealthGainsinDevelopingCountries虽然图表暂时没有,但大家可以通过范文了解描述图表和分析现象的优秀句型。Itcanbeseenfromthechartthattherehavebeendramaticchangesinlifeexpectancyandinfantmortalityindevelopingcountriesinthepastdecades.Asthechartshows,people...
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- Atmosphericcarbondioxidelevelshavenowtouched400partspermillion—andkeeprising.Sowho'sresponsible?Scientistspegthestartofthisseeminglyinexorablerisetoabout1750,whenpeoplestartedburningcoaltorunsteamengines.ButtheCO2increasealsostemsfromactivitiesl...
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