5.
Q: What are the two speakers talking about?
A) A prediction of the future of mankind.
B) A new drug that may benefit mankind.
C) An opportunity for a good job.
D) An unsuccessful experiment.

6.
Q: What does the man mean?
A) A lesson requires students' active involvement.
B) Students usually take an active part in a lecture.
C) More knowledge is covered in a lecture.
D) There is a larger group of people interested in lessons.

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