2. 外语
  3. A Soot’s Role in Changes in the Climate and the Atmosphere B Observations of Warming in the Northern Hemisphere C Explanation

A Soot’s Role in Changes in the Climate and the Atmosphere B Observations of Warming in the Northern Hemisphere C Explanation

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问题 A  Soot’s Role in Changes in the Climate and the Atmosphere
B  Observations of Warming in the Northern Hemisphere
C  Explanation of Increased Warming Effect Caused by Soot
D  Effort to Reduce Snow Albedo
E  Ways to Reduce Soot Emission
F  Greenhouse Gases as the Main Factor of Global Warming
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选项
答案A
解析 第四段介绍了soot在两方面起的作用：(1)soot增加了雪吸收太阳能量和热量的能力； (2)soot导致海洋和陆地上空的大气层发生变化。
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