题目选项分析

Modern historians typically regard Constantine's adoption of Christianity not as a sudden and dramatic "conversion" experience at the Battle of Milvian Bridge, but as a gradual process that began with the influence of Helena, his Christian mother.

Modern historians typically regard Constantine's adoption of Christianity not as a sudden and dramatic "conversion" experience at the Battle of Milvian Bridge, but as a gradual process that had a beginning with the influence of Helena, his Christian mother.