问题： [单选,材料题] According to the third paragraph，what will happen when the underground heat does not dis—appear?
A . Coal heats up on its Own and catches fire and burns．
B . The underground oxygen will be used up．
C . Poisonous fumes and greenhouse gases wm be accumulated anderground．
D . There will be an increase of abandoned mines．
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发表于 2022-3-21 14:36:37
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