请大家直接按顺序填写字母,不要加题号,不要出现其它格式,否则系统不认。 extension 2. sample 3.negotiation 4.directory 5. switchboard 6.rush order 7.cellphone 8. IDD code 9.area code 选项见下: A. telephone dialing prefix that people have to dial before someone's personal number if they are making a phone call to that place from a different area. B. a system used to connect telephone calls in an office building, hotel etc. or the people who operate the system. C.a request from a customer for goods to be supplied very quickly. D. telephone dialing prefix for international direct dialing. E.one of many telephone lines connected to a central system in a large building, which all have different number. F.a small quantity of some product that shows you what it is like. G. a book which gives lists of people's names, addresses, and telephone numbers, usually arranged in alphabetical order H. a telephone that can be used over a wide area, without a physical connection to a network I. official discussions between the representatives of opposing groups who are trying to reach an agreement, especially in business or politics.