阅读下面短文，掌握其大意，然后从第1—20 各题所给的四个选项（A、B、C 和D）中，选出最佳选项。
On a cold winter evening, I was walking home, tired and hungry, when suddenly came screams(呼喊声) from behind some tress.1， I slowed down to listen, and 2 that what I was hearing were the sounds of a fight. A woman was being3not far from where I stood.
“Should I go to help her？” I thought. I was worried about my own 4，and I regretted having suddenly decided to take a new way home that night.“What if I am5too? Shouldn't I just6to the nearest phone and call the police？” But already the girl's7were growing weaker. I knew it was time for me to act fast because I could not8the life of this unknown woman，9 it meant risking my own life.
I am not a 10 man. I didn't know where I found the11and physical strength(体力), but once I had finally12to help the girl, I became suddenly changed. I ran behind the bushes and 13the attacker off the woman. Struggling, we fell to the ground, where we fought for a few minutes 14the man jumped up and ran away.
15 heavily，I stood up and came up to the girl, who was crying behind a tree. In the 16，I could not see her clearly, but I could certainly17her shock. Not wanting to frighten her any further, at first I spoke to her from a distance.
“It's OK，” I said 18.“The man ran away. You're safe now.”There was a long stop and then I heard the words, said in both wonder and 19“Dad, is that you？” And then, from behind the tree, stepped my youngest 20， Katherine.
