正确答案是：1. a written or printed message to a person or group, usually sent by mail in an envelope → letter, 2. the writing, sending, and receiving of messages electronically → E-mail, 3. a list or program of things to be done or considered → agenda, 4. a facility enabling participants in distant locations to take part in a conference electronically → video conferencing, 5. a display that shows notices, advertisements, bulletins, etc → notice board, 6. an internal document that is generally short, focuses on a single topic, reports information, makes a request, or recommends future action → memorandum, 7. the telephonic transmission of scanned-in printed material → fax, 8. an official record of the proceedings of a meeting → meeting minutes