OG 13指代问题。

Spencer125

In late 1997, the chambers inside the pyramid of the Pharaoh Menkaure at Giza were closed to visitors for cleaning and repair due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing and fungus was growing on the walls.
(A)    due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing
(B)    due to moisture that tourists had exhaled,  thereby raising its humidity to such levels that salt from the stone would crystallize
(C)    because tourists were exhaling moisture, which had raised the humidity within them to levels such that salt from the stone would crystallize
(D)    because of moisture that was exhaled by tourists  raising the humidity within them to levels so high as to make the salt from the stone crystallize
(E)    because moisture exhaled by tourists had raised  the humidity within them to such levels that salt from the stone was crystallizing

这个题答案是E，答案倒是能够选出，但OG中的解释说，C,D选项中的them seems to refer to tourists,然后又说E中的them clearly refer to chambers.很疑惑，看不出E中的them和C,D中的有什么不同，请教高手解答，还是OG说的不对呢？

kiwifoodtown

LZ，我们先看看C和D中代词them的位置，位于分词短语或定语从句中，根据句子意思就不难发现them指代了上一层级的先导词--复数的tourists. 再来看看E选项，根据原则，从句中的代词通常指代主句中的主语，那么在原因状语从句中的them也自然指代了主句的主语chambers，再回过头仔细读一下句子也能验证它的合理性。

Spencer125

kiwifoodtown 发表于 2013-7-4 12:44
LZ，我们先看看C和D中代词them的位置，位于分词短语或定语从句中，根据句子意思就不难发现them指代了上一层 ...

说得好，采纳了~~~