题文
(2009·湖北) 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 |
推荐试卷
(2009·湖北) 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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