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GRE阅读题目解析:云对地球暖化效应的作用

2017-07-22 08:25:00来源:网络

  P5

  1

  As of the late 1980's. neither theorists nor large-scale computer climate models could accurately predict whether cloud systems would help or hurt a warming globe.

  1980 年代末,无论气象理论学家还是大规模电脑气象模型,都无法精确预测云对地球暖化效应发挥什么样的作用。

  2

  Some studies suggested that a four percent increase in stratocumulus clouds over the ocean could compensate for a doubling in atmospheric carbon dioxide, preventing a potentially disastrous planetwide temperature increase.

  有些研究认为,海上增加 4% 的层积云可以抵消大气中二氧化碳翻倍的影响,进而阻止潜在的全球气温上升带来的危害。

  3

  On the other hand, an increase in cirrus clouds could increase global warming.

  另一方面,卷云变多则可能加剧暖化。

  4

  That clouds represented the weakest element in climate models was illustrated by a study of fourteen such models.

  十四种模型算法显示,云是气象模型中呈现的最不成功的因素。

  5

  Comparing climate forecasts for a world with double the current amount of carbon dioxide, researchers found that the models agreed quite well if clouds were not included.

  假如把现在的大气二氧化碳水平加倍,比较预报结果,研究者们发现,如果不考虑云的因素,各种模型预报结果相当接近。

  6

  But when clouds were incorporated, a wide range of forecasts was produced. (125 words)

  但如果考虑云,预报结果就变得大相径庭。

  10. Select the sentence that indicates one reason the fourteen models described in the passage failed to agree.

  “ But when clouds were incorporated, a wide range of forecasts was produced. ”

  有点绕。

  现在气象学家要用一些模型来模拟各种气候因素,推算出一个预报,如果多种模型对一个因素的预报非常接近,那么可能说明,关于这种因素的预报是相对准确的,比如温度,如果各种预报都说明天要降温,那么明天可能确实要降温,如果大家都说降温到 0 度,第二天一量差不多正好 0 度,那么这些预报在温度这一项上基本靠谱,都对了。

  不考虑云的预报,各种模型的运算结果都接近,但加入云的预报,forecasts 马上变得 wide range 了,说明肯定有的算错了,不然结果不可能差那么多。

  题目让我们找到暗示了十四种模型预报结果不一样的原因,就是最后一句。

  以上就是新东方在线GER频道为你带来的GRE阅读题目解析,更多精彩敬请关注新东方在线GRE频道。

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