VOA常速英语2008年-California Rooftop Initiative Could Power 162,0_在线英语听力室

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By Paul Sisco
Washington
02 April 2008

An electric company in the sunny western U.S. state of California plans to begin installing solar panels on rooftops of commercial buildings to produce environmentally friendly energy.

VOA's Paul Sisco has the story.

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VOA常速英语2008年-California Rooftop Initiative Could Power 162,0