（B）听下面一段对话，完成5-7题，从题中所给的A、B、C、三个选项中选出最佳选项。对话读两遍。
5. What is Tom doing now?
A. He is reading newspapers. B. He is reading a book about animals.
C. He is watching an interesting performance.
6. What does Tom’s brother want to be in the future?
A. A policeman. B. A teacher. C. An animal doctor.
7. How many brothers and sisters does Tom have?
A. Two brothers and one sister. B. One brother and two sisters.
C. One brother and one sister.
