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 查看更多

 

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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

查看答案和解析>>

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 

查看答案和解析>>

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

查看答案和解析>>

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 

查看答案和解析>>

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

查看答案和解析>>


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