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As of late 1980s, neither theorists nor large-scale computer climate models
As of late 1980s, neither theorists nor large-scale computer climate models
游客
2025-02-19
1
管理
问题
As of late 1980s, 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. [br] The author of the passage is primarily concerned with
选项
A、confirming a theory
B、supporting a statement
C、presenting new information
D、predicting future discoveries
E、comparing points of view
答案
B
解析
a statement对应第一段第一句,全文通过例子和实验来支持这一观点。A项错在confirming,confirm表示“证实”,是100%的确定,但是本文只是通过例子和实验来“加强”第一段第一句的观点,并没有“证实”。C项文中来提及。D项文中未提及。E项文章只有一个观点,即第一段第一句,而不是一些观点。
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