第三节: 听句子，选择相应的答语。（每小题念两遍，5分）
11. A. S-O-N. B. He’s a son. C. I’m my parents’ son.
12. A. Yes, she is. B. Yes, he is. C. No, she isn’t.
13. A. Yes, he is. B. No, it isn’t. C. Yes, they are.
14. A. It’s a photo. B. Yes, it’s a ring. C. She’s my sister.
15. A. It’s a photo of my family. B. You’re welcome. C. He’s my father.
