作者danyuchn (Javy)
看板GMAT
标题[RC. ] OG2016-RC137~139 「预测考点」策略解析 by Dustin
时间Thu Jun 18 07:46:53 2015
(想看Dustin独家第一手解析OG2016的新题,请看这里:
https://webptt.com/cn.aspx?n=bbs/GMAT/M.1434559815.A.A8E.html
https://webptt.com/cn.aspx?n=bbs/GMAT/M.1434561584.A.C29.html)
今天要来用OG2016的新题,解析一下我第一遍看题时脑中所想的东西。
Most attempts by physicists to send particles faster than the speed of light
involve a remarkable phenomenon called quantum tunneling, in which particles
travel through solid barriers that appear to(5) be impenetrable.
(专有名词後配修饰语定义:可能考细节题) If you throw a ball at a wall,
you expect it to bounce back, not to pass straight through it. (类比/举例:
可能考作用题)Yet subatomic particles perform the equivalent feat. (看到Yet
转折关键字先判断有无态度上的转换:这边没有,只是在做对比)(对比考相同相异)
Quantum theory says that there is a distinct, albeit small, probability
that such a particle(10) will tunnel its way through a barrier;(出现「理论」
,可能考细节题) the probability declines exponentially as the thickness
of the barrier increases.(出现thickness 跟probability的线性关系:可能考
推论题)
-------------Context+Topic:定义与介绍量子穿隧效应-------------
Though the extreme rapidity of quantum tunneling was noted as
early as 1932, not until 1955 was it hypothesized—by Wigner and(15) Eisenbud
—that tunneling particles sometimes travel faster than light. (看到though
让步关键字先判断有无态度:这边没有,只是在做事实的对比)(对比考相同相异)
(两个以上的年代出现:可能考细节题)
(看到人提出想法:「W跟E hypothesized」,可能会考何者为真题:W.E.会认同
下列何叙述)Their grounds were calculations that suggested that the time
it takes a particle to tunnel through a barrier increases with the thickness
of the barrier until tunneling time(20) reaches a maximum; beyond that
maximum, tunneling time stays the same regardless of barrier thickness.
This would imply that once maximum tunneling time is reached, tunneling
speed will increase without limit as barrier thickness(25) increases.
(看到tunneling time与barrier thickness的线性关系:可能考推论题)
-------------Arg:学者W跟E提出假说------------
(发现假说後的文章篇幅剩不到一半--不会再有态度转换)
Several recent experiments have supported this hypothesis that tunneling
particles sometimes reach superluminal speed. According to measurements
performed by Raymond Chiao and colleagues, for example, photons can pass
through(30) an optical filter at 1.7 times the speed of light.
(证据、举例:考作用)
-------------Eval:引入实验支持---------------
--
Dustin Deng (一战自修760,AWA 5.5)
Dustin/A2GMAT 全科机经班:
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https://webptt.com/cn.aspx?n=bbs/GMAT/M.1433954252.A.2EC.html
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http://dustingmat.blogspot.tw
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※ 编辑: danyuchn (42.73.245.177), 06/18/2015 07:47:30
※ 编辑: danyuchn (42.73.245.177), 06/18/2015 07:51:02