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As there is less and less coal and oil, scientists are exploring new ways of mak

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As there is less and less coal and oil, scientists are exploring new ways of mak

As there is less and less coal and oil, scientists are exploring new ways of making use of ____ energy, such as sunlight, wind and water for power and fuel.

       A. original                    B. alternative                C. convenient                D. staple

试题答案

B

解析:

略

标签：exploringarescientistsnewmaking

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