请听下面一段材料，回答第1至3题。 1. What was the woman's purpose in going to New York during the vacation? [     ] A. To visit an American family. B. To learn English. C. To go sightseeing. 2. When did the woman come back form America? [     ] A. On July 5th. B. On July 25th . C. On August 25th. 3. What can we know about the American classes? [     ] A. The teachers taught mostly speaking. B. The teachers were serious. C. The students were quiet.