Question

请帮我分析一下英语句子成分

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形式主语 is谓语 a little upsetting 表语 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.真正的主语

Answer 2

我认为是主语从句