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热身词汇：
jet 喷气式飞机；喷口；喷射；喷气式发动机
听力题目：
Q: Which one is not correct according to the conversation?
A: They are waiting for the food.
B: There is a seven dog years to one human year thing
C: The joke is not funny at all to the man.
D: It's not funny at all for the woman to hear the joke.
