在问一个gwd...

37. GWD26-Q37

Sound can travel through water for enormous distances, prevented
from dissipating its acoustic energy as a result of boundaries in the ocean
created by water layers of
        different
temperatures and densities.

A.      prevented from
dissipating its acoustic energy as a result of

B.      prevented from having its
acoustic energy dissipated by

C.      its acoustic energy
prevented from dissipating by

D.      its acoustic energy
prevented from being dissipated as
        a
result of

E.       preventing its acoustic
energy from dissipating by

为什么选C?感觉很拗口啊……这是什么用法呢？我选的是E

嗯，应该选C...我开始也选E了

我认为:

首先，是energy被prevented，而不是sound。

其次，sound不能prevent the energy,通过energy被动表达省略了主语。

再次呢，C 省略了被动语态的be动词，做了独立主格结构。