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

answer:

答案E,但总觉得修饰不妥,我的答案是C,听听大家的意见

C may distort the original meaning that the boundaries dissipate the energy and thus lead to an awkward concept that the energy is prevented from dissipating by boundaries.

关于prevent...from...

有没有prevent...from being done的结构?

还是都是用主动表示被动?