[解析]
(1)答案:C.细节理解题.根据第二段"I came across the fact that the Internet usage was growing at 2,300 percent per year.I'd never seen or heard of anything that grew that fast,and the idea of building an online bookstore with millions of titles was very exciting to me."可知,互联网的迅速发展让作者感到吃惊,也让作者萌生了创建一个网络书店的想法,故选C.
(2)答案:A.句意理解题.根据第三段段意和"I didn't think I'd regret trying and failing.And I suspected I would always be haunted by a decision to not try at all."可知,老板想说服作者留下来,作者有些动摇,但经过思考之后,作者决定辞职建网站,作者不害怕尝试和失败,但会因为想法没有付诸实践而愧疚.故选A.
(3)答案:C.推理判断题.根据第三段"I decided I had to give it a shot.I didn't think I'd regret trying and failing."可知,作者认为自己将不会为尝试和失败感到后悔.故选C.
(4)答案:D.细节理解题.根据最后一段"After much consideration,I took the less safe path to follow my passion,and I'm proud of that choice.For all of us,in the end,we are our choices."可知,作者把自己的热情付诸了实践,并且获得了成功.是我们的选择才成就了我们每一个人.故选D.