You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <random>
      <page id="2283" ns="0" title="拉脫維亞" />
      <page id="2496" ns="0" title="烏尤尼鹽沼" />
    </random>
  </query>
</api>