题目内容：
Of the following public speaking strategies, which ones can be used at the beginning of an academic presentation to both attract the audience's attention and briefly introduce your research topic?
A.Ask the audience an interactive question that is related to the topic of your presentation.
B.Use a vivid analogy to make an abstract research topic easier to be understood.
C.Set up a contrast using examples or arguments relevant to your research topic to intrigue the audience.
D.Use typical life-related examples to bring out the research topic and emphasize its significance at the same time.
参考答案：