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Sunspots, vortices of gas associated with strong electromagnetic activity, are visible as dark spots on the surface of the Sun but have never been sighted on the Sun's poles or equator.

正确答案: A

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OG SC 14题,不会做,求助!

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楼主
发表于 2011-8-5 19:22:46 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
14. Sunspots, vortices of gas associated with strong
electromagnetic activity, are visible as dark spots on
the surface of the Sun but have never been sighted on
the Sun’s poles or equator.
(A) are visible as dark spots on the surface of the
Sun but have never been sighted on
(B) are visible as dark spots that never have been
sighted on the surface of the Sun
(C) appear on the surface of the Sun as dark spots
although never sighted at
(D) appear as dark spots on the surface of the Sun,
although never having been sighted at
(E) appear as dark spots on the Sun’s surface,
which have never been sighted on
我选的E,为何选A?
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沙发
发表于 2011-8-5 22:52:17 | 只看该作者
E) 中
appear as dark spots on the Sun’s surface, which have never been sighted on
which 指 Sun’s surface, 而 Sun’s surface have never been sighted 不合逻辑,更重要的是它改变了句子原意。
板凳
发表于 2011-8-6 01:44:44 | 只看该作者
E 中,which语法上就近指代了the Sun’s surface,但逻辑上本来应该指代Sunspots才妥当。
地板
 楼主| 发表于 2011-8-6 14:39:20 | 只看该作者
第二次看我选了C,C哪里不对?
5#
发表于 2011-8-6 14:46:21 | 只看该作者
C和E都是一个错误
as + n, 意思是作为...。
CE两个都是这样的意思:Sunspots,作为dark spots,...。而原句是要比较两者。CE都把sunspots和dark spots看成是一种东西
6#
 楼主| 发表于 2011-8-6 15:02:06 | 只看该作者
A中are visible as dark spots,不也是AS 作为吗?
7#
发表于 2011-8-6 15:31:50 | 只看该作者
这个我理解错了。

我个人看法:
原句对sunspot作出的定义是看上去像太阳表面的黑斑;
C是像黑斑一样出现在太阳表面
两者可能有所出入,在原句没有语法错误的情况下还是选择原句。

另外可以OG的解释是说Although引导的从句不完整。
8#
发表于 2011-8-12 18:41:04 | 只看该作者
Although 明明能省略主语和be动词的....
9#
发表于 2011-8-12 19:35:24 | 只看该作者
Sunspots, vortices of gas associated with strong electromagnetic activity,are visible as dark spots on the surface of the Sun but have never been sighted onthe Sun’s poles or equater.
划掉的部分是插入语,所以主语是sunspots
(A) are visible as dark spots on the surface of the Sun but have never been sighted on==>这是svo but vo的结构,时态没有问题,but have never...的逻辑主语也没有问题,语法和句义都符合

(B) are visible as dark spots that never have been sighted on the surface of the Sun ==>这个选项的意思和A有很大的差别,要分清楚原句的意思是sunspots have never been sighted on the ....还是dark spots have never been sighted....,因为这个that就近修饰的是spots, 而这里的dark spots是用来作比较参考的东西,所以根据句义这个选项的修饰对象有问题

(C) appear on the surface of the Sun as dark spots although never sighted at ==> 这个选项的句义改的就更加离谱了,sunspots是作为dark spots appear on the surface of sun, although 后的逻辑主语是sunspots, never sighted at

(D) appear as dark spots on the surface of the Sun, although never having been sighted at ==> 和C 一样的问题,而这个问题更加严重,haveing been 了,哪有现在在进行吗。在G的规则中,进行时都是少用的,别说是现在完成进行时了。manhann bible里说了,这种自然规律通常都是用一般现在时的,不用进行时的

(E) appear as dark spots on the Sun's surface, which have never been sighted on==>which修饰有问题,后面的内容都是修饰surface的, 可以看得出来逻辑句义已经错误了

中文分析的很奇怪的,但是gmatclub有关于这道题的分析,他们说的很清楚
Option-C,D: are out since the sentence is not a cause-effect sentence i.e Reason for sunspots being visible on the surface of the sun, is not because they are never sighted on the Poles or equator.
Option B: modifies dark spots which changes the intended meaning
Option E: modifies surface and that makes no sense
Option A: Correct.

http://gmatclub.com/forum/sunspots-79261.html

fyi

其实最近复习manhann 的SC bibile以来就觉得,所谓的逻辑句义不对,就是修饰错误
10#
 楼主| 发表于 2011-8-12 22:19:38 | 只看该作者
非常感谢楼上的回答,很精辟啊!我看到你发的链接里,真的是好东西,再次感谢!
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