听下面一段独白,回答第1-3题。 1.What is the lecture mainly about? A. How to raise birds. B. How to take care of birds. C. How to distinguish birds. 2. How many ways are mentioned to help recognize birds A. 2. B. 3. C. 7. 3. What will the speaker do next? A. Bring in birds. B. Play a recording. C. Take some notes.