Public speaking is a private activity.
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When a student gives an oral presentation in class, he is not engaged in public speaking.
A. 对
B. 错
People use public speaking to spread knowledge, express thoughts, inspire audience.
A. 对
B. 错
Public speaking is informal.
A. 对
B. 错
In china, the history of public speaking can be traced back to spring and autumn period.
A. 对
B. 错