Modern technology is harmful to the natural environment because ______. [br] Acc

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问题 Modern technology is harmful to the natural environment because ______. [br] According to the passage, methane gas is used to ______.

选项 A、conserve(保存) industrial residues(废料)
B、create recycled paper products
C、provide electricity to process sewage
D、treat with the raw sewage

答案 C

解析第五段主要讲的是沼气问题。阅读此段我们得知：处理污水需要大量的电，而污水产生的沼气足够满足处理污水时用电的需求，因此本题应选C。

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