新東方新托福聽力特訓(xùn)Report on Disk

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MP3下載

https://online1.tingclass.net/lesson/shi0529/0000/859/25.mp3

https://image.tingclass.net/statics/js/2012

What does the student mean by this?
A He thinks that the professor is making a fool of him.
B He feels that he himself should have figured out the solution earlier.
C He thinks that he was very stupid to ask such a question to the professor.
D He feels insulted at the professor’s suggestion.
(B)