37.C【解析】前文提及“Anyone can tap to‘share'their chatbot conversation..”,后文则指出“In thiscase,a shared chat ends up in the 'Discover'feedfor the world to see.”,C项能衔接前后文,填补前后文的逻辑空白,与后文形成呼应。38.F【解析】后文介绍了“This is extra informationabout the picture,such as the location where itwas taken or who is in it.”,且提及了避免分享metadata的具体方法,F项引出了核心关键词metadata,与后文形成紧密的内容呼应,衔接自然。39.G【解析】后文以“For example,you may havenoticed thumbs-up or thumbs-down buttons nextto responses in the chatbot.If you click one ofthose,even on the paid version,then the companycan keep that conversation for 10 years.”为例展开说明,G项可以作为段首句,点明本段的核心观点,统领整段内容。