阅读下面的短文，掌握其大意，然后从短文后各题所给的A、B、C、D四个选项中， 选择最佳选项。
A beautiful smile
When I was thirteen
years old, a girl gave me an important gift. It was a smile.
It was the early autumn
of my 1 year at a new school. It's also the first year of
middle school. No one knew me. I was very 2, and afraid to make
friends with anyone.
Every time I heard the
other students talking and laughing, I felt even more lonely. I could not talk
to anyone about my problem, and I didn't want my parents to worry
about me.
One day, my classmates
were 3 with their friends, but I
sat in silence(沉默) and felt so down that
everything didn't sound real. At that
moment, a girl entered the classroom. I did not know who she was. She passed me
and then turned back. She looked at me and, without a word, 4.
Suddenly, I felt the 5 of something bright and
friendly. It made me feel happy, lively and warm. It was like a hidden
treasure(宝藏).
That smile 6 my life. I started to talk
with other students. Day by day, I learnt to trust people, and they included me
in their circle of friends. The girl with the bright smile has become my best
friends now, and we stick together like glue. I can talk to her about my study,
feelings and hobbies, pretty much everything. I am so 7 that I met such a nice
girl.
One day, I asked her why
she smiled at me that day. She said she could not remember!
Now I believe that the
world is like a 8. It is just what you think
it is. If you think you are lonely, you might always be alone. But if you smile
at it, it will always smile back!
