题目内容：

听下面一段较长对话，回答以下小题。

1.What are the speakers mainly discussing?

A.The food. B.Different customs. C.The health.

2.How does the host know the guest is full according to the man?

A.The guest eats out all the food.

B.The guest refuses the offered food.

C.The guest leaves some food on the plate.

3.Where does the woman come from probably?

A.The USA. B.The UK. C.China.