托福培训学校-环球托福[环球教育旗下品牌]

GRE阅读真题&剖析&答案(一)

2014-04-28 15:06| 来源:环球GRE

摘要: 环球托福今天推出GRE阅读真题及剖析,便于大家练习。今后环球托福会陆续推出GRE阅读真题及分析,供参考练习GRE阅读。如果考友你能把所有题目跟着做下来,GRE阅读
上海托福培训官网
 
先来看看第一篇环球托福推荐的GRE阅读真题吧。
 
GRE阅读真题原文一              
 
In  the  1980's,  astronomer  Bohdan  Paczynski  proposed  a  way  of  determining  whether  the enormous dark halo constituting the outermost part of the Milky Way galaxy is composed of MACHO's  (massive  compact  halo  objects),  which  are  astronomical  objects  too  dim  to  be visible. Paczynski reasoned that if MACHO's make up this halo, a MACHO would occasionally drift in front of a star in the Large Magellanic Cloud, a bright galaxy near the Milky Way. The gravity of a MACHO that had so drifted, astronomers agree, would cause the star's light rays, which would otherwise diverge, to bend together so that, as observed from Earth, the star would temporarily appear to brighten, a process known as microlensing. Because many individual stars are of intrinsically variable brightness, some astronomers have contended that the brightening of intrinsically  variable  stars  can  be  mistaken  for  microlensing. However,  whereas  the  different colors of light emitted by an intrinsically variable star are affected differently when the star brightens, all of a star's colors are equally affected by microlensing. Thus, if a MACHO magnifies a star's red light tenfold, it will do the same to the star's blue light and yellow light. Moreover, it is highly unlikely that a star in the Large Magellanic Cloud will undergo microlensing more than once, because the chance that a second MACHO would pass in front of exactly the same star is minuscule.
 
GRE阅读真题剖析
 
文章概况:开头说有一些宇航员提出了一种方法,并用这种方法测试 hale 中是否包含 macho, 这种 macho 肉眼是看不到的。后面就开始不停的论述这个观点,中间的推导过程实在读不 懂,反正和 light ray 和颜色有点关系,这个推导过程一直持续到文章结尾。
 
 
GRE阅读真题题目
 
Question# 1.
 
It can be inferred from the passage that which of the following would constitute the strongest evidence of the microlensing of a star in the Large Magellanic Cloud?
 
(A) The brightness of such a star is observed to vary at irregular intervals.
(B) The brightening of such a star is observed to be of shorter duration than the brightening of neighboring stars.
(C) The red light of such a star is observed to be brighter than its yellow light and its blue light
(D) The red light, yellow light, and blue light of such a star are observed to be magnified temporarily by the same factor.
(E) The red light of such a star is observed to have increased tenfold.
 
GRE阅读真题剖析

问的是细节,我们根据 microlensing of a star in the Large Magellanic Cloud?来定位,但是这个破词全篇都是,问题起不到作用了,怎么办?我们来看看选项!这些选项好像都和星星的 亮度和光被观测到有关系,如果选项存在一个共同点,那就证明你要读到的原文应该包含这 些共同点,我们来看看原文哪句话说得是这些亮度和光被观察,应该是 microlensing 这个词出现的第一句:the gravity of a MACHO that had so drifted, astronomers agree, would cause the

star's light rays, which would otherwise diverge, to bend together so that, as observed from Earth,
the star would temporarily appear to brighten, a process known as microlensing.  

这句话的大致 意思是 MACHO 重力飘移将会导致曾经分散的光聚集到一起,这样从地球上看起来,这些 星就会看起来更亮一些!我们来看看选项
 
A 说观测是有不规则的间断,没提,杀
B  说亮度持续时间比旁边的星短,说持续时间问题,没提,杀
C  说红光比黄光和蓝光看起来亮,反正说更亮的问题,有点关系,留着
D 说这些光被放大了,也有关系,留着
E  说星的红光增加了 tenfold,没提,杀
C 和 D 最大的差距在于 C 强调的是这些光自己哪个比哪个亮而 D 强调的是这些光集体被弄 亮了,原文说的是这些光一起被聚集到一起了,D 更好!

GRE阅读真题题目

Question# 2.

According to the passage, Paczynski's theory presumes that if MACHO's constituted the Milky
Way's dark halo, occasionally a MACHO would

(A) drift so as to lie in a direct line between two stars in the outer Milky Way
(B) affect the light rays of a star in the Large Magellanic Cloud with the result that the star would seem for a time to brighten
(C) become obscured as a result of the microlensing of a star in the Large Magellanic Cloud
(D) temporarily increase the apparent brightness of a star in the Large Magellanic Cloud by increasing the gravity of the star
(E) magnify each color in the spectrum of a star in the Large Magellanic Cloud by a different amount
 
GRE阅读真题剖析
 
问如果 MACHO 包括了 milky Way dark  halo,MACHO 将会怎么样?既然问的是 MACHO 会怎样,首先想根据 MACHO 来定位,但是这个词文章太多了,没用,只能根据 Milky Way's dark halo 来定位,我们可以找到文章第一句话,但是这句话我们刚才已经读过了,说得只是 一个现象,没有说如果某个条件存在之后 MACHO 会产生什么结果?我们继续往后读,后 面大概强调的是重力导致光聚集,从地球上观测这些光会更亮一些。我们根据这个内容来看 选项。
 
A 说 MACHO 会在什么一个位置上,没提,杀
B  说影响光线导致星看起来会更亮一些,沾边,留着
C  变得模糊了,方向反了,杀
D 通过重力增加使得亮度增加,沾边,也留着
E  不同程度地放大了颜色,没提,杀
 
B 和 D 进行比较,B 说 MACHO 会影响到光从而使得星看起来亮一些,而 D 强调 MACHO 通过增加星的重力来增加亮度,文章说得是 MACHO 重力会影响光聚集,不是 MACHO 增 加了星的重力,与文章所说信息不符合,

GRE阅读真题题目
 
Question# 3.
 
The passage is primarily concerned with
(A) outlining reasons why a particular theory is no longer credited by some astronomers
(B) presenting data collected by a researcher in response to some astronomers' criticism of a particular line of reasoning
(C) explaining why a researcher proposed a particular theory and illustrating how influential that theory has been
(D) showing how a researcher's theory has been used to settle a dispute between the researcher and some astronomers
(A) describing  a  line  of  reasoning  put  forth  by  a  researcher  and  addressing  a  contention concerning that line of reasoning
 
GRE阅读真题剖析
 
问主旨,我们直接来看选项
A 提出一些原因解释为什么一些宇航员不在信任一个理论,文章一直说宇航员在用这个理 论,而这个选项说不再相信,方向不对,杀
B  还说宇航员批评一个东西,方向还是不对,杀
C  说为什么用一个理论并探讨这个理论的影响,有点关系,留
D 说出 dispute 这个选项方向就于原文不符,杀
E  说为什么用一个理论并列出原文,有点关系,先留着
C 和 E 这两个选项最大的不同在于这两个选项的后办部分,一个强调的是这个理论的影响而 另一个强调的是这个理论的原因,文章第二句话开头就说 reason that,显然是探讨这个理论
应用的原因,选 E。
 
以上就是环球托福推荐GRE考生们的GRE阅读真题分析及答案,希望想提高GRE阅读的考生能够坚持练习。环球托福祝你早日成功!