Making energy use completely harmless to the environment______ very difficult and usually economically expensive.
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40 Public lands can be used for energy development when_____.
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The passage suggests that making less use of modern technology may________
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The passage suggests that making less use of modern technology may__________. 查看材料
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paper use wood for making paper.改为被动语态
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A newspaper headline concerning new energy development______his attention and he was much interested in making investment in it.
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Renewable energy sources can be replenished in a short period of time. The five renewable sources used most often include hydropower (water), solar, wind, geothermal, and biomass. Renewable energy's impact on the world's energy picture is significant. Many important events have occurred during the history of using renewable sources to generate electricity--but the overall consumption from renewable energy sources has declined by about 15 percent from their I996 peak to about 6 quads in 2005.
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The president devoted his energies to update the curricula, making the education offered at Washington College as meaningful and usual as possible.
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It is no use ________ him. He is making unbearable noises.
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