2. 外语
  3. A. The Interaction of Gases and Water Vapor Producing the Greenhouse Effect B. Why It Is Difficult to Create the Perfect Compute

A. The Interaction of Gases and Water Vapor Producing the Greenhouse Effect B. Why It Is Difficult to Create the Perfect Compute

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问题 A. The Interaction of Gases and Water Vapor Producing the Greenhouse Effect
B. Why It Is Difficult to Create the Perfect Computer Model
C.  How Certain Factors Can Both Increase and Decrease: Temperatures at the Same Time
D. The Possibility That Increased Temperatures May Be Due to Normal Fluctuations
E. Development of Computer Models
F. The Main Culprit Behind the Recent Warming
A. have been rising
B. general circulation model(GCM)
C. an imperfect description of today’s climate
D. aerosols and clouds
E. a significant amount of carbon dioxide
F. a "signature" of human activity
选项
答案B
解析 见第三段三、四句，“…scientists use computer simulations of the interactions……”，“These general circulation models，or GCMs，…”。
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