You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <alllinks galcontinue="Bart_Epstein|4602" />
  </query-continue>
  <query>
    <pages>
      <page pageid="287" ns="0" title="超越学科界限的认知基础系列讲座" />
      <page pageid="290" ns="0" title="清华教授面对面指导" />
      <page pageid="2452" ns="0" title="BOT模式" />
      <page pageid="7325" ns="0" title="大数据与机器智能" />
      <page pageid="9313" ns="0" title="HTC Vive虚拟现实头戴显示系统" />
      <page pageid="9325" ns="0" title="全景图片拍摄设备" />
      <page pageid="9327" ns="0" title="全景视频拍摄设备" />
      <page pageid="12290" ns="0" title="胡嘉坤" />
    </pages>
  </query>
</api>