请听下面一段独白，回答第1至3题。 1. What is the speaker mainly talking about? [     ] A. A historic tree. B. A well-known park. C. A famous commander. 2. What do we know about the Washington Elm? [     ] A. It was less than one hundred years old. B. Washington couldn't have commanded under it. C. It was much older than people had thought. 3. What can we learn from the talk? [     ] A. Some historical stories are untrue. B. Washington commanded the army on his knees. C. The Washington Elm was destroyed before the celebration.