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对于新gre考试阅读考生在现场的逻辑反应一定要比以前更快，以前考gre文章论据比较多一些，即便是某个句子没有看明白问题也不大，但是新gre考试阅读论据太少，所以把每个句子梳理清楚，这对考生推理能力提出更高的要求。 比如： At a certain period in Earths history, its atmosphere contained almost no oxygen, although plants were producing vast quantities of oxygen. As a way of reconciling these two facts, scientists have hypothesized that nearly all of the oxygen being produced was taken up by iron on Earths surface. Clearly, however, this explanation is inadequate. New studies show that the amount of iron on Earths surface was not sufficient to absorb anywhere near as much oxygen as was being produced. Therefore, something in addition to the iron on Earths surface must have absorbed much of the oxygen produced by plant life. In the argument given, the two portions in boldface play which of the following roles? A.The first is a claim made by the argument in support of a certain position; the second is that position. B.The first is a judgment made by the argument about a certain explanation; the second is that explanation. C.The first expresses the arguments dismissal of an objection to the position it seeks to establish; the second is that position. | 
