During the summer holidays there will be a revised schedule of services for the students.

Changes for dining-room and library services hours and for bus schedules will be posted on the wall outside of the dining-hall. Weekly film and concert schedules, which are being arranged, will be posted each Wednesday outside of the student club.

In the summer holidays, buses going to the town centre will leave the main hall every hour on the half hour during tire day. The dining-room will serve three meals a day from 7:00 am to 7:00 pm during the week and two meals from noon to 7:00 pm on weekends. The library will continue its usual hours during the week, but have shorter hours on Saturdays and Sundays. The weekend hours are from noon to 5:00 pm.

All students who want to use the library lending services must have a new summer card. This announcement will also appear in the next week's student newspaper.

The main purpose of this text is to ______.

A．tell students of important schedule changes

B．tell students of new bus and library services

C．show the excellent services for students

D．ask students to renew their library cards