【单选题】【消耗次数：1】
来自自然界，不需要加工或转换而直接加以利用的能源叫做（）。
①
A.新能源
②
B.可再生能源
③
C.一次能源
④
D.二次能源
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【单选题】
能源是指提供能量的自然资源，是机械能、热能、化学能、原子能、生物能、光能等的总称。存在于自然界的一次能源可分为可再生能源和不可再生能源，如（）。
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