2. 外语
  3. Global warming refers to the average temperature of the atmosphere, oceans, and landmasses of Earth. Scientists are growing con

Global warming refers to the average temperature of the atmosphere, oceans, and landmasses of Earth. Scientists are growing con

admin2009-04-23  33
问题 Global warming refers to the average temperature of the atmosphere, oceans, and landmasses of Earth.
Scientists are growing concerned about other gases produced from ______.
选项
答案manufacturing processes
解析 第3个小标题TYPES OF GREENHOUSE GASES下面最后一段第1句：Scientists are growing concerned about other gases produced from manufacturing processes that pose an environmental risk．
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