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="BIT-China" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1954" ns="10" title="Template:BABS UNSW Australia" />
      <page pageid="17389" ns="10" title="Template:BABS UNSW Australia1" />
      <page pageid="9077" ns="10" title="Template:BABS UNSW Australia Footer" />
      <page pageid="9075" ns="10" title="Template:BABS UNSW Australia Header" />
      <page pageid="1080" ns="10" title="Template:BGU Israel" />
      <page pageid="35454" ns="10" title="Template:BGU Israel/footer" />
      <page pageid="31888" ns="10" title="Template:BGU Israel/menu" />
      <page pageid="3536" ns="10" title="Template:BHSF Beijing" />
      <page pageid="385" ns="10" title="Template:BIOSINT Mexico" />
      <page pageid="63105" ns="10" title="Template:BIOSINT Mexico/footer" />
    </pages>
  </query>
</api>