选择题：Which of the following ways are mentioned in this unit as ef

题目内容：

Which of the following ways are mentioned in this unit as effective methods to add more variety to your presentation and make it more engaging?

A.Use different modes of communication in your presentation, especially in the beginning.

B.Mix the formal and informal register of spoken English in your speech to add more variety to the language.

C.Change the volume, pace, and tone of your speech according to the importance of the messages.

D.Use different logic orders for your presentation to surprise the audience and grab their attention in the beginning.

参考答案：

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