【求讨论】关于persuming是否需要逻辑主语（附题GWD-279）

NicholeNn · 发表于 2017-10-21 10:36:41

我们知道当Ving作为verbal modifier的时候，逻辑主语和主句主语一致。但是今天看到了一道出自GWD的题，这道题存在比较大争议，但是我搜了外网的讨论，没有发现关于presuming作为争议点在这道题中的讨论，所以关于这道题presuming的逻辑主语是谁的疑问还没有得到解决，求各位讨论！

下面附题：
NASA's methodical approach to the exploration of Mars has not yet answered the questions of whether biological life forms ever emerged on Mars and whether, presuming such life forms having left fossil traces to begin with, those traces can still exist in some moist recesses of the cold and arid planet.

A. and whether, presuming such life forms having left fossil traces to begin with, those traces can
B. and whether, if it is presumed that such life forms left some fossil traces to begin with, can those traces
C. and whether, presuming such life forms left fossil traces to begin with, those traces
D. and, presuming such life forms did leave some fossil traces to begin with, if they can
E. and, presuming such life forms to have left fossil traces to begin with, if they

OA: C

我选了正确答案，但是是在比较错误选项的结果下得出，我的疑问：
1.正确答案中presuming是否需要逻辑主语，如果需要，修饰的对象是 those traces还是NASA's methodical approach？（尽管从语义角度我认为都不对。）
2.如果不需要，这属不属于特殊用法？比如，类似 comma + including其实修饰的是名词。

附gmatclub关于这道题的讨论入口：
https://gmatclub.com/forum/nasas-methodical-approach-to-the-exploration-of-mars-has-not-119300.html?kudos=1

谢谢~

NicholeNn · 发表于 2017-10-21 21:45:04

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