Economist wrote:
Set26-37
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
答案是C
我選D
我不懂
1.為什麼C的from後面可以用主動，energy會主動做dissipating的動作嗎
2.為什麼as a result of 不行？
如果真的想表示藉由boundaries
不是應該用through +N或by+Ving嗎
還是說by後面接什麼都可以？
謝謝幫忙。
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