Which one is not the reason for the need to briefly introduce the research topic before entering the usual 3-move pattern in the introduction of an academic presentation?

A.Because it's not a good idea to keep your audience waiting for the topic-introducing sentence for too long in an AP.

B.Because the audience expects to learn about the topic of your report within a very short time at the beginning of your presentation.

C.Because only with a clear topic introduction in the first place,　can one intrigue the audience and then gradually guide them through the presentation.

D.Because presenting one's research topic in limited words is a challenging task, and the accomplishment of this task can demonstrate one's public speaking skills.

正确答案：Because presenting one's research topic in limited words is a challenging task, and the accomplishment of this task can demonstrate one's public speaking skills.