GMAT语法大全551题

盈儿

以下是引用kingsoft在2005-2-23 1:25:00的发言：

       这个题目是选D的

       those指代sources

       Once positioned in space, the Hubble Space Telescope will capture light from sources （that are ) twenty times fainter compared to those that can be detected by ground-based instruments

       这样把省略补出来就清楚了，句子的主干是the Hubble Space Telescope will capture light from sources，之后的都是隶属于（that are ) 定语从句之内的成分

       地表上的仪器能检测光，也能检测光源，这个可以说的通。

right-on!!!

tiantian8273

57。 Once positioned in space, the Hubble Space Telescope will capture light from sources twenty times fainter compared to those that can be detected by ground-based instruments.
(A) compared to those that can b detected
(B) compared to those they can detect
(C) than that can be detected
(D) than those that can be detected
(E) than those detecting
这道题我在C与D中徘徊，还是选错了，
D正确，那末those应该指代sources， 那末这里的than得比较在句子中做什莫成分呢？

’twenty times fainter'紧跟在'sources'后面，应该是修饰'sources'，如果修饰light的话则应该直接跟在light的后面，这是OG中一直强调的就近修饰原则；比较词'fainter'在修饰短语中间，比较的对象则应该是修饰短语所修饰的对象，即这里的sources;比较结构除了逻辑上要可比之外，结构形式上也要尽量对称，因此D选项用'those'指代前面的'sources', 形成Noun 与 Noun 的比较，C选项中没有'those'，这样就变成了Noun与subordinate(从句）的比较，结构不对称，没有D选项好。

[此贴子已经被作者于2006-11-6 22:01:43编辑过]

fd983314

这道题做错了。记住教训：that can be detected。

关于from是否应该补出：自己一直觉得ETS对于省略和补出没有严格规定，只要意思上没有歧义就可以。各位NN意下如何？

amor924

I think, we should choose the better choice rather than the absolute choice as ETS said.  So although D omits "from", it is better than C.

hhjc

up

benyneb

下面是从一个印度人的考试论坛转贴的. 大家姑且看看吧. 我觉得分析的还有些道理. 虽然我也选错了...

Re: that / those
    

---

We are not sure whether the comparision is for "light" or for "sources". So the choice could be either C or D.

Now, let us examine C

C has used "that". So logically "that" is referring singular noun-"light". If we replace "that" with "light", the sentence becomes

The Hubble Space Telescope will capture light .....twenty times fainter than light can be detected by ground-based instruments.
        

This sentence is awkward.
We need some construction similar to

The Hubble Space Telescope will capture light .....twenty times fainter than that [light] which can be detected by ground-based instruments.

Now, let us see D,
D uses plural "those". So logically "those" is referring plural noun-"sources".

The Hubble Space Telescope will capture light from sources twenty times fainter than those [sources] that can be detected by ground-based instruments.

This sentence is OK. So D should be answer.

youyou3941

以下是引用benyneb在2007-9-20 0:21:00的发言：

下面是从一个印度人的考试论坛转贴的. 大家姑且看看吧. 我觉得分析的还有些道理. 虽然我也选错了...

Re: that / those
 

---

We are not sure whether the comparision is for "light" or for "sources". So the choice could be either C or D.

Now, let us examine C

C has used "that". So logically "that" is referring singular noun-"light". If we replace "that" with "light", the sentence becomes

The Hubble Space Telescope will capture light .....twenty times fainter than light can be detected by ground-based instruments.
  

This sentence is awkward.
We need some construction similar to

The Hubble Space Telescope will capture light .....twenty times fainter than that [light] which can be detected by ground-based instruments.

Now, let us see D,
D uses plural "those". So logically "those" is referring plural noun-"sources".

The Hubble Space Telescope will capture light from sources twenty times fainter than those [sources] that can be detected by ground-based instruments.

This sentence is OK. So D should be answer.

等于没讲！！

XVVjing61

rwchinak

57。 Once positioned in space, the Hubble Space Telescope will capture light from sources twenty times fainter compared to those that can be detected by ground-based instruments.
(A) compared to those that can b detected
(B) compared to those they can detect
(C) than that can be detected
(D) than those that can be detected
(E) than those detecting

1、C项的确错，正确应为，than that that can be detected.

2、those必然是指代sources，前面根本没有lights出现，只有light，that或者those单独出来指代的时候，指代的东西在前面是必然要出现才可以的。

3、至于逻辑问题，我刚开始也感觉应该选C，应该light与light比较。但看了这么多评论再想想后，觉得应该是惯性思维的错误，这题应该并不是光与光的比较。这句话翻译出来应该是这样子：

HST可以检测到来自   比GBIs能检测到的 弱20倍的光源   的光。

so……D正确

PS，如果C项改为than that that can be detected，我觉得还是C项更好。更符合我们正常的思维吧

batmanhm

终于想通了。。。。。。