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  3. According to the research of NCAR, if the concentrations were held steady at 2000 levels, ______. The author writes this passag

According to the research of NCAR, if the concentrations were held steady at 2000 levels, ______. The author writes this passag

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问题 According to the research of NCAR, if the concentrations were held steady at 2000 levels, ______.
The author writes this passage to
选项 A、call on people to prevent global warming.
B、present the results from two research models.
C、appeal to people to take adaptation as priority.
D、forecast the future trends of global warming.
答案C
解析 本题问作者写这篇文章的目的。文章首段就提出问题"We can’t stop this，so how do we live with it"全球变暖不可阻挡，重要的是怎样去适应它；第二、三段从实验的角度告诉读者全球气候变暖不可避免；末段明确指出"… this means adaptation should be given a much higher priority that it’s received to date…We have the scientific and technological knowledge we need to improve adaptation and apply that knowledge globally"，我们应该提高适应性。因此"呼吁人们将适应性作为首要的因素来考虑"正确。让更多的人关注全球变暖：虽然倒数第二段"Many people don’t realize we are committed right now to a significant amount of global warming and sea-level rise"．提到人们没有意识到是人类自己造成了气候的变化，但这并不是本文主要谈论的问题。展示两种实验模型的结果：文中确实出现了两种实验模型的结果，都是为了说明全球变暖不可避免。"展示实验模型的结果"本身是手段，而不是目的。预测全球气候变暖的未来趋势：全球气候变暖不可避免也许可以算作一种未来趋势，但不是本文讨论的中心问题。作者通过本文要谈的是面对这种情况我们应该怎么办。
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