2. 自考
  3. A. produces much more global warming than a carbon-dioxide forcing of the same magnitude B. contributed to 25 percent of observe

A. produces much more global warming than a carbon-dioxide forcing of the same magnitude B. contributed to 25 percent of observe

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问题 A. produces much more global warming than a carbon-dioxide forcing of the same magnitude
B. contributed to 25 percent of observed global warming
C. winter and spring
D. the warming effects increase
E. still surpass soot in warming the world’s climate during the last century
F. can he seen mostly in the Northern Hemisphere
A soot forcing is unusually effective, which ______.
选项
答案A
解析 本题定位到第五段最后一句话，非常清楚，答案也很明显。
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