下面是小编为大家整理的新GRE机经的阅读部分，这篇是关于“云和气候变化预测”的新GRE阅读机经，希望可以帮助各位考生打开阅读思路，提高新GRE阅读能力。

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　　云和气候变化预测

　　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. 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. On the other hand, an increase in cirrus 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.

　　15.1. The author of the passage is primarily concerned with

　　(A) confirming a theory

　　(B) supporting a statement

　　(C) presenting new information

　　(D) predicting future discoveries

　　(E) reconciling discrepant findings

　　15.2. It can be inferred that one reason the fourteen models described in the passage failed to agree was that

　　(A) they failed to incorporate the most up-to-date information about the fect of clouds on climate

　　(B) they were based on faulty information about factors other than clouds that affect climate

　　(C) they were based on different assumptions about the overall fects of clouds on climate

　　(D) their originators disagreed about the kinds of forecasts the models should provide

　　(E) their originators disagreed about the factors other than clouds that should be included in the models22

　　15.3. It can be inferred that the primary purpose of the models included in the study discussed in the second paragraph of the passage was to

　　(A) predict future changes in the world’s climate

　　(B) predict the fects of cloud systems on the world’s climate

　　(C) find a way to prevent a disastrous planetwide temperature increase

　　(D) assess the percentage of the Earth’s surface covered by cloud systems

　　(E) estimate by how much the amount of carbon dioxide in the Earth’s atmosphere will increase

　　15.4. The information in the passage suggests that scientists would have to answer which of the following questions in order to predict the fect 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?

　　以上就是关于云和气候变化预测的新GRE阅读机经，希望能够帮助各位考生更好地备考新GRE。机经的作用是非常重要的，有很多机经会反复考到，大家可以进行认真阅读，从中推断出出题人的出题思路，总结出新GRE阅读的解题，做到杀G成功!

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