摘要：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 .primary B. alternative C. instant D. unique
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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. primary B. alternative C. instant D. unique
查看习题详情和答案>>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. primary B. alternative C. instant D. unique
查看习题详情和答案>>6. 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. primary B. alternative C. instant D. unique
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