A. Irving only began to practice law late in life. B. It was so successful that he won an ambassadorship. C. He was an expert on commercial law. D. He spent very little time working as a lawyer. 参考答案:D 答案解析:参见文章第二段倒数第二句。从中可知他虽学过法律,但兴趣不浓,也没认真地当过律师。选项A、B、C则与文中事实不符。