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| | |  | | | Lots of people visit the environmental friendly houses shown at the Fourth China's Changchun International Agriculture & Food Fair in Changchun, capital of northeast China's Jilin Province, Aug.17, 2003. Four ecological models of residences selected from more than 1,000 new designs feature energy-saving and comprehensive utilization of straw in supply of electricity, heating and fuels. [Xinhua] | | | | | | | | | |
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