根据短文内容,选择正确答案。 My name is Ann Smith. I'm an English girl. I'm twenty. I learn (学习) Chinese in Nanjing University (大学). I have a good friend. Her name is Nancy King. She is nineteen. She is from the U. S. A. We are in the same grade. But we are in different classes. My Chinese teacher is Mr. Yang. He is from Shanghai. Nancy has a Chinese teacher, too. Her name is Zhou Dan. Mrs. Zhou is a good teacher. Nancy likes (喜欢) her very much.