答案：B

考查过去分词做定语：原句也可以是这样：Taiwan-born filmmaker Ang Lee won the best director Oscar at the 78th Academy Awards, which is considered the highest honor in American movie fields.句意是;台湾出生的电影制片人李安获得了78届奥斯卡最佳导演奖，这被认为是美国电影圈最高的荣誉。选B。