（1）Where is the speaker？
A.In the Science Museum.
B.In the History Museum.
C.In the Music Museum.
（2）What can you see on the first floor？
A.Computers.
B.Science experiments.
C.Plants，trees and nature.
（3）How long will they spend on the first floor？
A.Two hours.
B.Half an hour.
C.One hour.
（4）On which floor can you see mobile phones？
A.On the first floor.
B.On the third floor.
C.On the second floor.
（5）How many floors are there？
A.Four.
B.Three.
C.Two.