In late 1997, the chambers were closed to visitors because moisture exhaled by tourists had raised the humidity within them to such levels that saltfrom the stone was crystallizing and fungus was growing on the walls.
对于such that的话,要看它的用法: 1. such + adj. + n. + that表示“如此~~~以至于~~~”,用法与so… that…基本一致,但很少作为考点,不过在正确选项中有所出现。但与so...that的区别在于,such...that中such后面一定要有名词。
如OG12 Q6 E: because moisture exhaled by tourists had raised the humidity within them to such levels that salt from the stone was crystallizing and fungus was growing on the walls
如:It's such a tiny kitchen that I don't have to do much to keep it clean. He came to such a sudden stop that we almost hit him.
2. such that与so that不能替换,so that表示的是一种目的,引导目的状语从句;或表结果,引导结果状语从句。而such that连用时,强调的是一种程度,比如: Their anxiety was such that they could not sleep.