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新gre考试实施以来，参加了新版gre考试的考生都觉得阅读部分的题难度增加了，这主要是由于新gre考试逻辑阅读需要考生的逻辑反应一定要比以前更快，可能考生还是有点不习惯，或是没有准备充足。那么，接下来的几天，小编将给大家搜索整理一些新gre考试逻辑阅读的练习题，希望考生能从平日的练习中总结规律，找到解题技巧。 Scientists have sought evidence of long-term solar periodicities by examining indirect climatological data, such as fossil records of the thickness of ancient tree rings. These studies, however,failed to link unequivocally terrestrial climate and the solar activity cycle, or even to confirm the cycles past existence.获得更多gre考试咨询点击进入免费咨询顾问或联系QQ客服：800004500 13. It can be inferred from the passage that studies attempting to use tree-ring thickness to locate possible links between solar periodicity and terrestrial climate are based on which of the following assumptions? The solar-activity cycle existed in its present form during the time period in which the tree rings grew. The biological mechanisms causing tree growth are unaffected by short-term weather pat terns. Average tree-ring thickness varies from species to species. Tree-ring thicknesses reflect changes in terrestrial climate. | 
