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GRE阅读题目解析:核聚变反应

2017-01-12 15:40:00来源:网络

  P5

  10. Which of the following, if true, most logically completes the passage?

  1

  Every fusion reaction releases neutrinos.

  核聚变反应都释放中子。

  2

  To test a hypothesis about the frequency of fusion reactions in the Sun, physicists calculated the number of neutrinos the Sun would produce annually if the hypothesis were correct.

  为了测试一种关于太阳内部核聚变反应频率的假说,物理学家根据假说,计算出太阳每年能产生的中子总数。

  3

  From this they estimated how many neutrinos should pass through a particular location on Earth.

  根据这个估算,他们可以估计有多少中子会通过地球的特定区域。

  4

  The fact that far fewer neutrinos were counted than were predicted to pass through the location would seem to prove that the hypothesis is wrong, except that --.

  实际上观测到通过的中子数比预期少,似乎证明这种假说是错的,除非:___ 。

  (A) the physicists, using a different method for estimating how many neutrinos should reach the location, confirmed their original estimate

  (B) there are several competing hypotheses about the frequency of solar fusion reactions

  (C) there is not enough energy in the Sun to destroy a neutrino once it is released

  (D) the method used to count neutrinos detects no more than approximately ten percent of the neutrinos that pass through

  (E) neutrinos released in the fusion reactions of other stars also reach the Earth

  选 D

  现在让我们挽救这种假说,尽管现在从结果上看它已经破产了,但除非发生了什么,它还有可能是正确的。

  A 如果其他方法的结果是对的,可能恰好证明原来的假说是不成立的。

  B 还有很多种别的假说,不代表这个可能更对。

  C 一看到 neutrino(中微子),什么啊文章都没出现过,划掉。

  D 正确。查中子数目的方法有问题,只能查出大概 10% 数量的中子。现在的问题恰好是测量到的数量小于实际应该通过的,这为文段提供的假说保留了一些正确的可能。

  E other stars?

  以上就是新东方在线GER频道为你带来的GRE阅读题目解析:核聚变反应,更多精彩敬请关注新东方在线GRE频道。

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