单项选择题

Questions 17-20 are based on the following talk about public speaking. You now have 20 seconds to read Questions 17-20. What is the most important thing in public speaking

A．Confidence.
B．Preparation.
C．Informativeness.
D．Organization.

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单项选择题

单项选择题

Questions 17-20 are based on the following talk about public speaking. You now have 20 seconds to read Questions 17-20. What is the most important thing in public speaking 您的浏览器不支持 audio 元素。