题目

根据短文内容，请将单词填写在题号对应的横线上。 Online shopping is coming into fashion in most cities, where people are able to make full use of the rapidly-developed internet technology. Nowadays, can we find a person has not experienced online shopping? Definitely not. Online shopping (welcome) by most people due to various reasons. From the perspective of consumers, it can save some time for people who don't have much spare time. Just click the mouse, they can get they want while staying at home. For the retailers（零售商）,it can cut some costs for those who d根据《桃花源记》一文，引申出一个常用来比喻理想中环境优美，生活安乐的世界的成语是“                  ”。