What should you do when delivering your speech?

A. Use facial expressions
B. Say "um" and "uh"
C. Slouch
D. Talk fast

Which form of vocalics is concerned with the highness or lowness of someone’s speech?

A. pitch
B. rate
C. volume
D. pauses

What types of gestures should you try to avoid?

A. Ones that send mixed signals with your words.
B. Ones that look contrived.
C. Ones that are not appropriate for your audience.
D. All of the above.

Since audiences generally do not enjoy long presentations, speak as rapidly as possible

A. 对
B. 错

How do you understand the saying “Actions speak louder than words”?