If you feel sick or uncomfortable， you might seek out a doctor． But what to do if you don't quite know where you fit into this world and you're tired of carrying that burden alone？
I answered strangers" questions on life puzzles at the entrance to the New York City subway at 57 th and 8th． A group of strangers had stopped by because they were carrying around some deep， meaningful questions that had long gone unanswered， like "why can't I be happier in my life？"
And then I spotted her， who would be my toughest questioner of the day． She was about 6 years old and held her mother's hand as she craned（伸长脖子）her neck to stare at as． Her mother stopped， but the girl hesitated． "It's OK，" I offered． "Do you have a question？" The girl smiled at her mother， then let go of her hand to walk over towards us． She looked me dead in the eye and said： "How do I know I'm real？"
Suddenly I was back in graduate school． Should I talk about the French philosopher Rene Descartes to prove our existence， with the phrase "I think， therefore I am？" Or， menlion English philosopher G．
Moore and his famous uhere is one hand， here is the other，" to prove the existence of the external world？ But then the answer came to me． I remembered that the most important part of philosophy was feeding our sense of wonder． "Close your eyes， I said． She did． "Well，did you disappear？" She smiled and shook her head， then opened her eyes． "Congratulations， you're real． "
She grinned（露齿而笑）broadly and walked over to her mother， who looked back at us and smiled．



Why did the author show up at the entrance of the subway？ ______

A. To take the subway．
B. To look for strangers" help．
C. To offer advice on life puzzles．
D. To help strangers carry their bags．

What made the little girl stare at the author？ ______

A. Curiosity．
B. Horror．
C. Excitement．
D. Nervousness．

How did the girl find the answer？ ______

A. By hearing a story．
B. By learning philosophy．
C. By referring to others" words．
D. By having a real experience．

Which of the following can best describe the author？ ______

A. Strict and smart．
B. Honest and brave．
C. Clever and helpful．
D. Humorous and sociable．