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【单选题】
能源短缺和环境恶化指的是 ( ) 1煤炭和石油的开采与技术有关,在当前技术条件下,煤炭和石油的开采是有限度的,这叫能源短缺;2煤炭和石油资源是有限的,以今天的开采和消耗速度,石油储藏将在百年内用尽,煤炭资源也不可能永续,这叫能源短缺;3煤炭和石油具有很大的气味,在开采、存放和使用过程中这些气味会聚集在空气中污染空气,使环境恶化;4大量煤炭和石油产品在燃烧时排出的有害气体污染了空气,改变了大气成分使环境恶化.A.
①③
B.
①④
C.
②③
D.
②④
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