单项选择题


SECTION A CONVERSATIONS
In this Section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow.
Questions 1 to 3 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now, listen to the conversation.

What is the main subject of the debate

A.The popularity of advertisement.
B.The function of advertisement.
C.The ways of advertisement.
D.Benefits of advertisement.