Question

请帮我分析一下英语句子成分，并判断句子属于哪种结构，谢谢！

It is a little upsetting to read that a certain line describes a fight between a Turkish and a Bulgarian officer and to find that the line consists of the noise of their falling and the weights of the officers,"Pluff!Pulff!" A hundred and eighty-five kilograms.
It is……that……是主语从句吗？ to read 作状语？还是倒装？最近刚学长难句，有点儿蒙，急需高人指点，越详细越好，谢谢！

Answer 1

It is……that……不是主语从句结构，而是强调句结构。但是这个的确是主语从句。it 为形式主语，指代to read that…… and to find that……这个真正的主语结构。句子本应该是 To read that …… and to find that …… is a little upsetting，由于主语过长，为了避免头重脚轻才采用形式主语。

Answer 2

这是主语从句，to read…and to find…是真正的主语，it只是形式主语。

Answer 3

主语从句

Answer 4

不是 that 应该引导的是read的宾语从句