题目详情
单选题 The main value of using expert testimony in a speech is to __________
A. gain attention in the introduction of the speech
B. enhance the vividness of the speaker's ideas
C. build the credibility of speakers who are not experts on their topics
D. keep the audience's attention throughout the body of the speech

学科:默认课程
时间:2025-06-23 13:30:21
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