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GRE阅读备考自我检测练习试题与答案

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2017-03-16 17:49:00

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  “GRE阅读备考自我检测练习试题与答案”由出国留学网GRE考试栏目为您提供,希望可以帮助到各位备考中的童鞋,小编预祝大家考试顺利!

  As of (As of: 到...时为止;从...时起) 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. Some studies suggested that a four percent increase in stratocumulus (stratocumulus: n.[气]层积云) clouds over the ocean could compensate for a doubling in atmospheric carbon dioxide, preventing a potentially disastrous planetwide temperature increase. On the other hand, an increase in cirrus (cirrus: n. 〈气〉卷云) clouds could increase global warming.

  That clouds represented the weakest element in climate models was illustrated by a study of fourteen such models. 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. But when clouds were incorporated, a wide range of forecasts was produced. With such discrepancies plaguing the models, scientists could not easily predict how quickly the world’s climate would change, nor could they tell which regions would face dustier droughts or deadlier monsoons.

  1.The information in the passage suggests that scientists would have to answer which of the following questions in order to predict the effect of clouds on the warming of the globe?

  (A) What kinds of cloud systems will form over the Earth?

  (B) How can cloud systems be encouraged to form over the ocean?

  (C) What are the causes of the projected planetwide temperature increase?

  (D) What proportion of cloud systems are currently composed of cirrus of clouds?

  (E) What proportion of the clouds in the atmosphere form over land masses?

  2.The information in the passage suggests that scientists would have to answer which of the following questions in order to predict the effect of clouds on the warming of the globe?

  (A) What kinds of cloud systems will form over the Earth?

  (B) How can cloud systems be encouraged to form over the ocean?

  (C) What are the causes of the projected planetwide temperature increase?

  (D) What proportion of cloud systems are currently composed of cirrus of clouds?

  (E) What proportion of the clouds in the atmosphere form over land masses?

  答案:(A)(A)

  GRE考试栏目精心为您推荐:

  2017GRE词汇备考资料

  2017年GRE阅读复习笔记

  2017年GRE数学每日一练

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  2017年GRE考试真题训练与答案解析

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