Q: What does the woman think is the cause of the man's headache?
A) Long exposure to the sun.
B) Lack of sleep.
C) Too tight a hat.
D) Long working hours.
Q: What does the conversation tell us about Mr. Li?
A) His English is still poor after ten years in America.
B) He doesn't mind speaking English with an accent.
C) He doesn't like the way Americans speak.
D) He speaks English as if he were a native speaker.