Birthdays are strange things. The more you have, the more you try and pretend they don't matter, and the more ____ . I’m not really sure why they think so. It's true that you are getting older, but as ____ , “Who isn't getting older every day?” The problem may be that a birthday reminds people of all the things ____ , but have not. I certainly understand that feeling, though I think ____ that I most want to do — a kind of personal re-ordering (重新排序) of the to-do list. What makes you depressed(郁闷) on your birthday is that you realize your re-ordered to-do list is exactly the same as it was last year. That makes you feel____ , and not been anywhere. I have not had that experience this year. I look back at where I was last year and find things have changed since then.

这篇调查报告作者先介绍了调查的原因，然后讲了四个部分内容，分别是____、____、____、____。