求教Prep2012-Pack1-SC-011[VSC002546] On a glacier in the High Himalayas...

On a glacier in the High Himalayas, a Japanese zoologist has found a species of midge that is unlike any other known insect in its spending its entire life cycle in the snow and ice of a glacier.

A that is any other known insect in its spending

In its spending的结构不一定是错的，但是此处语意不明。两种用法，一种指这种insect和其它的不一样，这也是原文所需含义。但是这里的用法明显指这种insect在spending这行为上和其它的不一样，扭曲了原文意思。

B that is unlike any insect known as it spends

必需用any other insect。

C that, unlike any other known insect, spends

D unlike any insect known because it spends

E unlike any other insect that is known, spending

正确答案是C。但是不理解E为什么错？

答案解释是that is多余，加入之后spending像是修饰Japanese zoologist。

可是即使此处spenging从句试图发挥作为整个前句a Japanese zoologist...的effect或result的功能也是不可行的啊？因为未划线部分是its entire life cycle，动物学家是人。

求解？