Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation. What does the man think is the biggest change of families9
A.The number of the only-child families is increasing. B.More young persons seldom stay at home. C.Relatives seldom live in the same place. D.The family members live in the same place.