听力原文：M: Hi, Jane. It's nice to see you again. I heard that you went to the US during the vacation. W: Yes. I went to New York to attend a summer course in English. M: Wow. You were lucky. How long did you stay there? W: About 50 days. I went there on July 5th and crone back on August 25th. M: How about the course? W: The course was very good. The teachers were nice. They taught us to listen, speak, read and write in English, but it was mostly speaking. One interesting thing l found was that the American classes are different from our classes here because they are very free. You can sit anywhere you like in the classroom. You can ask the teacher questions at any time during the class, and you are welcome to share your ideas with the class. I really like this kind of class. M: How interesting! Maybe our teacher should try that. What was the girl's main purpose in going to New York during the vacation?