Questions 11 to 18 are based on the conversation you have just heard.

A．the reasons for keeping medicines at home
B．people’s doubt about taking drugs
C．what kind of medicine people should prepare at home
D．the possible harms self-medication may do to people

A．Many young men, who live alone, have increased demand for houses.
B．Many young men need to rent more houses.
C．It is easy to apply for a mortgage for young generation.
D．The number of older people, many of whom live alone, becomes bigger and bigger.