听音,选择你所听到的句子。 ( ) 1. A. How about you? B. How old are you? C. How are you? ( ) 2. A. My father is a doctor. B. My mother is a teacher. C. I want to send this letter. ( ) 3. A. I'm tall. B. I'm four. C. I'm playing a card. ( ) 4. A. Is this your hat? B. Is that your cat? C. Is this your cat? ( ) 5. A. How much for this card? B. How much for this postcard? C. How much for these cars?