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

游客2025-03-16  0

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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