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 我想问下 选项C和E 里面them 的指代问题, OG解释说C选项里有指代tourist的嫌疑, 而E就明确指代chamber, 有些搞不清楚啊。 -- by 会员 安静的小兔 (2010/9/22 11:19:07)
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