留学群GRE厄尔尼诺现象

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新GRE阅读内容:厄尔尼诺现象

 

  GRE考试阅读量大,在短时间内要做好阅读题不太容易,但也是有技巧在这里的,可以让你更容易的完成题目。所以多进行阅读,扎实的进行GRE阅读复习,习惯GRE的逻辑思维,肯定会有成效。下面由留学群GRE栏目的小编给大家整理了《新GRE阅读内容:厄尔尼诺现象》,希望对你的GRE的阅读考试有帮助哦。


  The recent, apparently successful prediction by mathematical models of an appearance of EI Nino- the warm ocean current that periodically develops along (5) the Pacific coast of South America-has excited researchers. Jacob Bjerknes pointed out over 20 years ago how winds might create either abnormally warm or abnormally cold water in the eastern (10) equatorial Pacific. Nonetheless, until the development of the models no one could explain why conditions should regularly shift from one to the other, as happens in the periodic oscillations (15) between appearances of the warm EI Nino and the cold so-called anti-El Nino. The answer, at least if the current model that links the behavior of the ocean to that of the atmosphere is (20) correct, is to be found in the ocean. It has long been known that during an El Nino, two conditions exist: (1) unusually warm water extends along the eastern Pacific, principally along the (25) coasts of Ecuador and Peru, and (2) winds blow from the west into the warmer air rising over the warm water in the east. These winds tend to create a feedback mechanism by driving the warmer (30) surface water int a "pile" that blocks the normal upwelling of deeper, cold water in the east and ...