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题库 / OG2017V-SC-288
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.
prevented from dissipating its acoustic energy as a result of
prevented from having its acoustic energy dissipated by
its acoustic energy prevented from dissipating by
its acoustic energy prevented from being dissipated as a result of
preventing its acoustic energy from dissipating by
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1. 這題我一開始直接殺A,B, 因為句尾Ved分詞 抓到的邏輯主語是distances 距離阻擋 有點奇怪 刪AB 剩CDE
2. CD較相像 (1)看出被動 by>as a result of (2) being dissipated 冗贅 刪掉D 剩CE
3. 這題還是要了解獨立主格結構 不然會誤以為 its ~ energy為distances的同位語 誤刪
如果看得出來是獨立主格結構 只是糾結句意 看到by可以想說有兩種可能1.表被動 2.採行手段
看到＿後面接N (boundaries) 它會是
(E) 手段嗎？句意：聲音(主語) 透過 海洋裡～～的邊界 來阻擋聲能消散 有點奇怪吧
(C) 如果是被動 句意：聲能是被海洋裡～～的邊界 所阻擋消散
C比較合理吧 所以選C
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