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GRE阅读题目解析:电子化物

2017-04-10 09:18:00来源:新东方在线整理

  P6

  1

  In electrides, the anions (negative ions) are completely replaced by electrons, which are trapped in naturally formed cavities within a framework of regularly stacked cations (positive ions).

  在电子化物中,阴离子(带负电的离子)完全被电子取代,这些电子被束缚在常规堆叠的阳离子(带正电的离子)框架中自然形成的孔道内。

  2

  Unlike other types of anions, anionic electrons do not behave as if they were simple charged spheres.

  不同于其他类型的阴离子,代替阴离子的电子并不表现得像一个简单的带电球体。

  3

  The properties of an electride depend largely on the distance between the cavities that hold trapped electrons.

  电子化合物的特点很大程度上,视 那些束缚着电子的孔道间的距离 而定。

  4

  When the trapped electrons are far apart, they do not interact strongly, and so behave somewhat like an array of isolated negative charges.

  当这些被捕捉的电子彼此远离,互动就弱,因而就像某些各自孤立的负电荷阵列。

  5

  When they are closer together, they begin to display properties associated with large ensembles of identical particles.

  当它们彼此接近,就开始表现出相同粒子聚合在一起的特点。

  6

  When they are still closer, the ensemble properties dominate and the electrons "delocalize".

  如果继续接近,则主要表现出聚合的特点,电子原本的特性也就消失了。

  12. It can be inferred from the passage that an electride behaves most like a normal ionic crystal when the electride has which of the following features?

  (A) The anionic cavities are widely separated.

  (B) All of the trapped electrons are able to delocalize.

  (C) The trapped electrons are liberated by impinging photons.

  (D) The ions are tightly packed together.

  (E) Most of the cations have lost their electrical charge.

  选 A(?)

  根据文章描述,电子化合物表现的像普通的离子晶体时,表现出哪种特点?

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

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