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GRE阅读逻辑题训练(20)

2017-03-27 16:10:00来源:新东方在线整理

  为了帮助大家练习GRE阅读逻辑题,新东方在线GRE频道为大家带来GRE阅读逻辑题训练(20)一文,希望对大家GRE备考有所帮助。更多精彩尽请关注新东方在线GRE频道!

  No botanist lives long enough to study the complete life cycle of an individual California redwood tree. Nevertheless, by observing many trees at different stages, botanists can piece together the evolution of a single tree. Exactly the same principle applies in astronomy to the study of the life story of globular clusters, huge spherical aggregations of about a million stars all swarming about each other.

  Which of the following is an assumption made in the passage above?

  A:The methods of scientists in one field generally carry over to other fields even if the subject matter is vastly different.

  B:Observations of the life cycle of a single individual have little value in scientific studies.

  C:Globular clusters at different stages of development are accessible to astronomers for observation and study.

  D:There are globular clusters that have not so far been detected by astronomers.

  E:Redwoods and globular clusters must both be studied intensively now, while they still exist in sufficient numbers.

  最佳解析:

  本题待评价的推理为:“因为通过观察在不同阶段的红木树可以得到一棵树的完全生命历程,所以相同方法可以用于球状星体。”假设应当在推理中的差异概念间建立桥梁。(C)满足这一要求,表明能够得到不同发展阶段的球状星体,说明这一方法确实可以用于球状星体,所以(C)is correct。本题(A)选项类似于EXAMPLE FIVE中的(A),许多考生认为基于(A)上面的推论可以成立,但(A)不是使推论成立必要条件。因为即使(A)中加入not,上面的推论仍然可以成立,(A)中generally太强了,表明其不是必要条件。(B)(D)(E)都未涉及差异概念different stages,所以都不对

  答案:C

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  以上就是新东方在线GER频道为你带来的GRE阅读逻辑题训练(20),更多精彩敬请关注新东方在线GRE频道。

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