[视听材料] 老外的标准雅思小作文范文 范文, 雅思作文

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老外的标准雅思小作文范文
　　model answer:
　　The two graphs show that oil was the major energy source in the USA in both 1980 and 1990 and that coal, natural gas and hydroelectric power remained in much the same proportions. On the other hand, there was a dramatic rise in nuclear power, which doubled its percentage over the ten years.
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