【简答题】阅读理解。 You find a telephone number in the phone book, dial it, and then forget it. This is your short-term memory. It lasts less than 30 seconds. However, you don't look in the phone book for a friend'...
【简答题】First 1 "9", then dial 2 after you hear 3 . This 4 for city calls.For DDD you must dial “8” first. After you get the dial tone, you can dial 5 , and the number. For 6 you must 7 “8” first. After you g...