听力原文：Ladies and gentlemen, thank you for choosing National Railways. The time is now 7

:35, and we will be departing for Newton in three minutes. The trip will take a little more than six hours, which leaves us arriving in Newton around 1:30. I would like to remind you to store all hand baggage in the area above your seat. Should you have any oversized baggage, including skis and bicycles, you may store it in the storage rooms located at the front or back of your cart. We would also like to ask you to please keep all aisles clear. Again, thank you for choosing National Railways, and we hope you enjoy your journey through the beautiful countryside.

Where might this announcement be heard？

A．On a bus

B．On a boat

C．On a train

D．On an airplane