[解析]
(1)D推理判断题.根据文章最后一段的第一句"All in all,I have to thank you somehow for having the passion to help others because it is truly inspiring to me."可知,安伯写信的目的是为了表达感谢他的博客给他带来的巨大帮助,故选D项.
(2)C推理判断题.根据文章句子 I felt I was stuck in a position that had nothing to do with what I wanted to do with my life..可知过去的这段时间里我一直在做一件与我喜欢无关的工作,可推知安伯之前对自己的工作不满意,故选C项.
(3)C推理判断题.根据文章句子The CEO noticed my change and offered me the executive assistant position that I wanted.和Yes,it was not an important position,but when I was passionate (热情的) about it,I could make my life fulfilling.可知正是因为改变了自己的态度,所以我的生活发生了很大的改变,我也获得了自己想要的工作.也就是积极的态度可以给我们的生活带来的回报,所以答案选C.