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. Iwant 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?