阅读短文，从下面每小题的A、B、C、D四个选项中选出最佳答案。
Gary and Gavin were twin
brothers who worked in a store owned by their father. After the father had
passed away, they took over the store. One day, Gary left the bill on the cash
register (收银台), but when he returned,
the money was gone.
Gary then asked his
brother," did you see that twenty-dollar bill on the cash register?" Gavin
said no. But Gary did not let it go and kept asking. That made Gavin very angry
and they quarreled with one another. The quarrel divided the young men. Later,
a wall was built in the center of the store. For twenty years, hostility (敌意) never ended.
One day, a strange man
came to the store. He walked in and asked Gary, "How long have you been
here?" Gary replied that he'd been there all his life. "Then you are
the person I'm looking for," the man said. "Twenty years ago, I was totally
broke and hungry. I entered this store from the back door and saw a
twenty-dollar bill on the cash register. And I took it. All these years I haven't
been able to forget that. I had to come back and apologize for that."
The stranger felt shocked
when seeing tears well up in the eyes of the middle-aged man in front of him.
"Would you please go next door and tell the same story to the man in the
store?" Gary asked. Then something surprised the stranger even more-after
hearing his story, the two middle-aged men hugged each other. After twenty
years, the wall that separated them finally came down.
