Forcenturies,theonlyformofwrittencorrespondence（通信）wast...
问题详情：Forcenturies,theonlyformofwrittencorrespondence（通信）wastheletter.Letterswere,andare,sentbysomeformofpostalservice,thehistoryofwhichgoesbackalongway.Indeed,theEgyptiansbegansendinglettersfromabo...