1. (2020八下·海淀期末) 阅读下面的短文，掌握其大意，然后从短文后各题所给的ABCD四个选项中选择最佳选项。

    Mr. Black was once a policeman. He was a kind person. He liked to have a walk in the park after breakfast.

    It was very cold 1a winter morning. Mr. Black was walking along the street when he heard a cry for help. He turned around but could see nobody. He stopped and looked here and there. At the moment, a boy  2to him. The boy was in such a hurry  3he couldn't say a word except pointing towards the river. Mr. Black realized what had happened and ran to the river as soon as possible. 4 of them ran along the river and saw a girl in the water. She was holding a piece of wood. It was carrying her away. It was too  5.

    Without a word, Mr. Black took off his clothes as  6as he could, and jumped into the river. He  7to the girl and took her back near the bank and lifted the girl up, and then the boy helped pull her out of the water. Then they stopped a car and took the girl to the  8. At last the girl's life was saved, and she thanked them very much.