原题如下原题如下：
6. 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
C) because tourists were exhaling moisture, which had raised the humidity within them to levels such that salt from the stone would crystallize 黄色部分本来就是有because引导的一句完整的话,which从句修饰moisture,其主句就是前面because...,那么代词them就一定是指代的主句中的主语tourists
(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 raising前无逗号,就近修饰moisture,them就指代tourusts
A: such levels so that.... 不对，应该是 such .. that ... or so... that. 先铲除。
B: salt would... and fungus was .... 不平行，铲除。
C: them比较歧义，似乎也可以理解为指代上面紧挨的句子的主语 - 游客。同时salt would... and fungus was .... 不平行，铲除。
D: because of 加上一句超级长，超级拗口的名词，肯定不对。同时salt would... and fungus was .... 不平行，铲除。
E：好像都说的过去。because 后面是个moisture had raised the humidity的 主干，没问题。后面salt and fungus也平行。
我会选择 E.
