Thewayofcommunicationinpeople’slifehaschangedalotofinre...
問題詳情：Thewayofcommunicationinpeople’slifehaschangedalotofinrecentyears.Inthepast,peoplekeepintouchwitheachothermainlybywritinglettersorusethepublictelephone.Butnowalmosteveryonehaveamobilephone.Peo...