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17.
Q: What does the man mean?
A. He needs another job as research assistant.
B. He asks for Professor William for assistance.
C. He assists Professor William with his teaching.
D. He is doing research with Professor William.
18.
Q: What do we know from the woman's reply?
A. She thought there were no tickets left for the show.
B. She thought the seats on the left side were occupied.
C. The show was planned a long time ago.
D. The audience were deeply impressed by the show.
