According to the instructors in this unit, what is the proper length for making an impromptu speech?

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According to the instructors in this unit, what is the proper length for making an impromptu speech?

A.2 minutes

B.3 minutes

C.4 minutes

D.5 minutes

正确答案：B

Tag：英语口语直通车时间：2021-03-29 21:07:41

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