听力原文:M: I'm looking for the laboratory. Am I on the right floor?W: No, it's on the sec
听力原文:M: I'm looking for the laboratory. Am I on the right floor?
W: No, it's on the second floor. You can take the stairs up.
Q: Which floor is the man on?
(15)
A.The top floor.
B.The first floor.
C.The 2nd floor.
D.The 3rd floor.