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>
    <alltransclusions gatcontinue="Media-copyright|199" />
  </query-continue>
  <query>
    <pages>
      <page pageid="3" ns="0" title="Анкета знакомств: Aragorn" />
      <page pageid="67" ns="0" title="День Собаки" />
      <page pageid="78" ns="0" title="День Петуха" />
      <page pageid="98" ns="0" title="День Кота" />
      <page pageid="110" ns="0" title="День Дракона" />
      <page pageid="128" ns="0" title="День Кабана" />
      <page pageid="158" ns="0" title="Векторное кино" />
      <page pageid="178" ns="0" title="День Козы" />
      <page pageid="197" ns="0" title="День Змеи" />
      <page pageid="198" ns="0" title="День Обезьяны" />
    </pages>
  </query>
</api>