单选题
【正确答案】 D
【答案解析】[听力原文]
Edith: Reception. Good morning.
John: Good morning. This is Mr. John at Room 303. My company has been in touch with me this morning. They"d like me to stay on here for two more days. I wonder if it is possible to extend my stay here until 29th?
Edith: Would you hold the line, Mr. John? I"ll check the booking situation... Yes, that will be all right. It may be necessary to ask you to change rooms for the last night. Would that be acceptable?
John: Yes, that"s no problem. There is one more thing, too. There"s no information in my room about making external calls. Can you help me, please?
Edith: I"m sorry there"s no information, I"ll ask Housekeeping to check it. If you dial 6, you"ll get an outside line.
John: Fine. Thanks for your help.

What"s the purpose of the calling?
【正确答案】 C
【答案解析】[听力原文]
What"s the dialing number for an outside line?