2. 职称英语
  3. On several occasions over the past decade, a heavy cloud of air pollution has co

On several occasions over the past decade, a heavy cloud of air pollution has co

游客2024-01-19  20
问题 On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas away from any major concentration of manufacturing and automobile traffic．(Passage 1)
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答案 在过去的十年里，有很多次，大团被污染的空气笼罩着美国东部，给那些远离主要生产和交通堵塞地区的农民们敲响了健康警钟。
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