Section BDirections: In this part, you are going to listen to a lecture about online education. Pay attention to the signal words the speaker uses to indicate structure and choose the right answer to the following questions.音频101. How does the speaker introduce his topic?
A.
By saying “In today's lecture, we will talk about online education".
B.
By saying “Today, I want to talk about online education".
C.
By saying "Today, my topic is online education".
D.
By saying "Today, what I am going to cover is online education".