【正确答案】 B

【答案解析】[听力原文]
Narrator
Listen again to part of the lecture. Then answer the question.
Male student
when you talk about gorilla language, do you mean, like, those experiments where humans taught them sign language, or-or a language like...
Professor
OK, OK, wait-wait-wait just a minute—now, who in this class heard me use the word "language"?
Narrator
Why does the professor say this:
Professor
now, who in this class heard me use the word "language"?