（B）听下面的对话独白，每段对话或独白后有几小题，请根据你所听到的内容，从所给的A、B、C三个选项中选出一个适当的答语。每段对话或独白读两遍。
听第6段材料，回答6—7题：
6. Why does Sandy say Amy is her best friend?
A. Because Amy is pretty and busy.
B. Becau se Amy is kind and likes helping people.
C. Because Amy is in the same class with Sandy.
