2. 外语
  3. Modern technology is harmful to the natural environment because ______. Processing sewage requires large quantities of ______.

Modern technology is harmful to the natural environment because ______. Processing sewage requires large quantities of ______.

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问题 Modern technology is harmful to the natural environment because ______.
Processing sewage requires large quantities of ______.
选项 A、water
B、electricity
C、gas
D、oil
答案B
解析 第五段第一句明确指出：“处理污水需要大量的电”，故答案选B。
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成人本科学位英语

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