请阅读下面这段文字和图表，并按照要求用英语写一篇150词左右的文章。
Have you ever paid for knowledge online? According to Bloomberg, a platform, the De Dao app offers written articles and podcasts from famous personalities that the users must pay for, with topics ranging from music to economics. By May 2017, De Dao had 7 million users. As is reported in People’s Daily, Ximalaya FM, another popular online learning platform, had about 450 million users as of January 2018. The platform allows people to pay for and listen to online learning courses.
Many Chinese people used to be unwilling to pay for content online. However, many internet users’ attitudes have changed since they began to see quality content as valuable. In fact, 75% of internet users are happy to pay for quality content, according to a 2017 report by Chinese science news website Guokr and Internet Netease.
【写作内容】
1．请以约30个词概括上文和图表内容；
2．请以约120个词谈谈你对“Pay for Online Knowledge”的看法，包括如下要点：
（1） 分析哪些原因促进了网上知识付费市场的迅速发展（不少于两点）；
（2） 你愿意为网上知识买单吗？请阐述你的理由（不少于两点）
