A、On September 1. B、On June 3. C、Before the next school tear. D、After final exam. B信息明示题。说话人两次强调学生离开的日期：You must vacate your roo

Good afternoon. I’m Teresa Dawn, the housing director here in the university. I’m visiting all the dormitories this week to inform the students about the check-out procedures. I know you have a lot on your minds with final com-ing-up. But there are a few things you need to be aware of as you prepare to leave for vacation. These dormitories will be closed during the summer months and will reopen on September 1. You must vacate your room by June 3. Even if you are registered for classes during the summer, you must leave this dorm by June 3. If this is going to be a problem for you, you should contact my office as soon as possible. You should remember to return your room key before you leave. Failure to return your key can result in a 25-dollar fine. You must also make sure that all of your personal property has been cleared out of your room. I will be passing out the form for you to fill out concerning the condition of your room. You should report on the form any damage to your room which occurred over the last year, such as halls, room walls, doors or windows. That way our summer manage crew will know where to make repairs before the next school year starts. If you have any questions during the next few days, please ask your resident advisors or call my office. Now please take one of the forms as they’re passed around.
Questions 16 to 18 are based on the passage you have just heard.
16. What is the talk mainly about?
17. When is the deadline for students to leave?
18. If they forget to return the room key before they leave, what result will the student cause?