分类:推特网

Twitter/推特

Twitter is a social media network based on short posts limited to 280 characters. The social platform was founded by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams in 2006, as a microblogging network with a 140 character count limit. As of, 2017, Twitter boasted 330 million active users. News organizations use Twitter as an important way to find out what people are talking about and feeling as related to the big stories of the day.

中国国旗演变史:中国国旗的由来及历史演变

中国历史上,清朝和中华民国时期一共使用过三种国旗,分别为黄龙旗、五色旗和青天白日满地红旗。此外,从清末至中华人民共和国成立前,中国局势动乱,一些割据或傀儡政权,也称本身是“中央政府”,亦设有各自的“国旗”。1949年,中华人民共和国成立,规定五星红旗为中华人民共和国国旗。