一道OGSC，求大家解答！

跆拳九段31

31. The remarkable similarity of Thule artifacts throughout a vast region can, in part, be explained as a very rapid movement of people from one end of North America to the other.
(A) The remarkable similarity of Thule artifacts throughout a vast region can, in part, be explained as
(B) Thule artifacts being remarkably similar throughout a vast region, one explanation is
(C) That Thule artifacts are remarkably similar throughout a vast region is, in part, explainable as
(D) One explanation for the remarkable similarity of Thule artifacts throughout a vast region is that there was
(E) Throughout a vast region Thule artifacts are remarkably similar, with one explanation for this being
答案是D
The intended meaning of the sentence is that the rapid movement of people across North America is one explanation of the similarity of Thule artifacts throughout a vast region. As worded, however, the sentence is illogical: The sentence indicates that the similarity in artifacts was a rapid movement of people, which makes no sense. Instead of equating similarity with movement, the sentence needs to identify this movement of people as a cause of similarity among artifacts.
A  As worded, this version of the sentence makes the illogical statement that the similarity among artifacts is explainable as a very rapid movement. It should specify that the similarity of artifacts may be a consequence of the rapid population movement.
B This version of the sentence is syntactically awkward, and leaves unclear what the main subject, one explanation is supposed to be an explanation of.
C Like (A), this version of the sentence equates the similarity of artifacts with the movement of people, when a causal connection is what is intended.
D Correct. This version adequately expresses the intended causal connection.
E This version is awkward, introducing the causal connection with the unnecessarily wordy and indirect string of prepositional phrases, with one explanation for this. . . .
答案是D。

问题如下：
1.对A中的解释理解不好，解释说illogical：人工制品的相似可以被解释为快速的移动。然后说应该是强调：人工制品的相似可能是快速移动人口的结果。
请问区别在哪里？是不是从英文的解释角度有什么玄机？是否正确的写应该是can be the consequence of the rapid movement of people？但是我总觉得explain在这里的作用已经表明后面是解释了，所以不用加结果。人工制品的相似是快速的移动肯定不对，但这里有explained as，所以我真的不太懂了。麻烦大家解答一下
2.C中解释同A，解释中用了“equate”这个词，我不是很明白这里哪里“相等”了，is系动词前后相等可以理解，但是这里不是只有系动词，不是还有explained as吗，不能表达出解释的含义吗？

我觉得自己的问题可能是没有从英文的角度理解，但是不知道how。。。。so麻烦大家指点！！！谢谢！！

跆拳九段31

之前看过论坛的其他解答这道题的帖子，但是自己没有理解。。。一道题做了一个小时。。。。真心求解答。。。

RyanR

我觉得as一般都有“作为…”“是…”“等于…”的意涵，两边应该是对等关系。你可以说：“水门事件is explained by 尼克松阵营 as a 世纪大阴谋” 因为水门事件可以和世纪大阴谋对等。但similarity 和 movement是因果关系，不是对等关系，就不能这么用。

跆拳九段31

RyanR 发表于 2016-7-6 20:48
我觉得as一般都有“作为…”“是…”“等于…”的意涵，两边应该是对等关系。你可以说：“水门事件is expla ...

哈哈对哒对哒！后来又请教了一下别人，也是这么说的！关键在于as，，不是explainable。关键还是句子是因果关系。谢啦！！

毕出-Helr

建议看看这个哟~
http://www.gmat.la/question/OG2016-SC-31

跆拳九段31

毕出-Helr 发表于 2016-7-13 14:23
建议看看这个哟~
http://www.gmat.la/question/OG2016-SC-31

哇!大神出场!谢谢！get it

qingping01

毕出-Helr 发表于 2016-7-13 14:23
建议看看这个哟~
http://www.gmat.la/question/OG2016-SC-31

还是不懂C为什么错

毕出-Helr

qingping01 发表于 2016-8-24 06:11
还是不懂C为什么错

be explainable as是“作为...可以被解释”的意思。可以把C选项翻译为：

作为人们从北美的一端到另一端的快速移动，对Thule的工艺品在很大一片地区具有显著的相似度是可以被解释的。

但是这道题目，在逻辑上，“对Thule的工艺品在很大一片地区具有显著的相似度”不是作为“人们从北美的一端快速移动到另一端”，而应该是可以被解释为“人们从北美的一端快速移动到另一端”。

qingping01

毕出-Helr 发表于 2016-8-24 07:42
be explainable as是“作为...可以被解释”的意思。可以把C选项翻译为：

作为人们从北美的一端到另一端 ...

谢谢牛牛， 现在懂了。 主要是在考试的时候抓不住这么细的点~

毕出-Helr

qingping01 发表于 2016-8-24 07:50
谢谢牛牛， 现在懂了。 主要是在考试的时候抓不住这么细的点~

其实利用这种方法来考查咱们的考题很多呢，应该需要记住这种变化引发的语义问题哟，比如，这道题目也是一样哒：
http://www.gmat.la/question/OG2017-SC-779