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限时训练 第一部分 完形填空 Almost everyone around us uses a phone. Phones provide a simple and efficient means to conduct work or social arrangements from day to day. Several times in course of a work day, you may be 2 by phone with colleagues, students, lab assistants, secretaries or others on 3 matters. If you want an appointment with your department head, you would 4 call him and arrange a time with him. If you were unable to 5 your appointment, or if you found you had to be late for it, you would phone and change the 6 . In this way, no one 7 time waiting for someone who is not coming. If you want to buy something, you would “let your 8 do the walking”. That is, you call 9 to make sure the store has what you need. If it is an expensive item, you might call several stores to 10 prices. If you want to take a train or plane, after finding out 11 and prices, you can call to make a 12 ; if you want to shop for clothes after work, you might call to ask how late the store is open | 
