GWD-29-Q2

The discovery that Earth’s inner core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field.

A.    core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of the flow of heat from the inner through the outer planet and of the formation and periodic reversal in direction of Earth’s magnetic field

B.    core rotates independently of and more quickly than Earth’s outer layers is responsible for advancing studies of how heat from the inner core flows through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field

C.    core rotates independently and more quickly than Earth’s outer layers are responsible for advancing studies of how heat from the inner core flows through the outer planet, and how Earth’s magnetic field forms and the periodic reversal of its direction

D.    core, rotating independently and more quickly than Earth’s outer layers, are responsible for advancing studies of the flow of heat from the inner through the outer planet, and the formation and periodic reversal in direction of Earth’s magnetic field

E.     core, rotating independently of and more quickly than Earth’s outer layers, is responsible for advancing studies of the flow of heat from the inner through the outer planet and of how Earth’s magnetic field forms and the periodic reversal of its direction

这个题看着太晕了，都没太看懂句子结构和意思，我选了E，答案是A，请大家帮忙看看吧

另外想问下A中的of 是否是多余的？

就是因为CD没有of直接就排除了，这里是rotates independently of （Earth’s outer layers ）and more quickly than Earth’s outer layers 的省略形式，很完美的并列。至于E，discovery that后面要跟个句子吧，可是MM看这里， is responsible 是主句的谓语，that从句里就只有一个，名字加一个分词词组。
                

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rotates independently of (Earth's outer layers) 的省略形式

这题我是这么看的。

首先我们看主语是the discovery(单数），所以谓语是be responsibe for ,应该用单数。

所以CD错误。。

再看A。。一看主语，谓语，都再，而且study of ...and(study ) of 是并列的。。

看E，如果用了现在分词修饰the core，那么is  responsilbe 就修饰了宾语从句了，而真正的主语没有了谓语。。

B：and前面有逗号，错误。。

我觉得E主要问题是在：.

  core, rotating independently of and more quickly than Earth’s outer layers, is responsible for advancing studies of the flow of heat from the inner through the outer planet and of how Earth’s magnetic field forms and the periodic reversal of its direction

is responsible 修饰 core 改变了句意，应该是修饰整个发现的。

NN来指正下啊。。。。

up....

请问是rotate of固定搭配么？我刚刚查字典，没有看到rotate of的用法阿。

还请指教！