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【单选题】
听力原文：W: Mr. Watson, I wonder whether it's possible for me to take a vacation early next month? M: Did you fill out a request form? Q: What is the probable relationship between the two speakers? (18)A.
Teacher and student.
B.
Doctor and patient.
C.
Manager and office worker.
D.
Travel agent and customer.
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举一反三
【单选题】What does the man say about his projects?
A.
They often take longer than expected.
B.
They need to be completed very quickly.
C.
They have to be approved by many people.
D.
They frequently change their requirements.