答案：A

题目分析：judging from/by 由……判断，judging from 用作独立结构，即不用考虑从句和主句逻辑关系的一致性，用法相当于：generally speaking, considering (考虑到），根据题意，故选A。

点评：看如下两个例句，e.g.1: Judging from the truth, he is honest enough. e.g.2 Judging from the view, the earth is round. 从这两个例句中我们可以看出，不管主句主语为人、物，judging from 都不变，不会写成judged from 。非独立结构则要考虑主从句的逻辑关系， 如：having finished the work, I went out ，此处having done为主动；若主语变了，主动被动就会变， e.g.: Hit by the man, the little boy became angry.