Which statement is true of the methane emissions
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Which statement is true of the methane emissions of plants in the experiment?
A.The lower the temperature,the higher the amount of methane emissions.
B.Living plants release less methane than dried plants at the same temperature.
C.When exposed to sunlight,plants stop releasing methane.
D.The higher the temperature,the greater the amount of methane emissions.
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答案：D
根据第四段和第五段的内容，只有D项是正确的说法。温度越高，沼气的释放量越大，有生命的植物释放的沼气量远大于干燥植物的释放量，在阳光下，它们的沼气释放量是正常情况下的3倍。