GWD26-37,答案是E还是C?

eng_mba

答案给的E,看了讨论贴，说原文接近C,我开始选E,现在也觉得C对。从意义上讲，应该是boundary prevent

而E的意思是sound prevent its energy from dissipate。 请大家指教！

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:

chamcham

I chose C

carolinelmf

E项是正确的。声波本身的特质就是在水中的衰减非常小，boundaries会令声波衰减，而不是让声波不衰减，C，D项错在把boundaries当好人了。

preventing作伴随状语，把它调到句首就十分容易理解了。

Preventing its acoustic energy from dissipating by boundaries in the ocean created by water layers of different temperatures and densities, sound can travel through water for enormous distances.

逻辑上可以理解为：因为能量不被水减弱，声波可能传千里。

tianshangke

c对

[此贴子已经被作者于2008-3-9 14:13:38编辑过]

wangming

我觉得选E，但是原因跟前面有些不同，如果是C的话，逗号后面是一个完整的句子，两个句子之间应该加and啊，大家觉得呢？

zdx618

选择c，其实是个倒装，还原过来就应该明白了

the boundaries prevent its its acoustic energy from  dissipating .而prevente sth/sb from doing为固定搭配

e中涉及preventing逻辑主语的问题，很明显不是原句主语sound 做preventing的主语，所以c is the best!~

moonlolita

sound怎么就不能做preventing的逻辑主语?既然它都能travel……
何况有道题目industry都能say