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>
    <allpages>
      <p pageid="39645" ns="0" title="Beginner Investing For Forex Trading 12" />
      <p pageid="39529" ns="0" title="Beginner Investing For Forex Trading 3" />
      <p pageid="39634" ns="0" title="Beginner Investing For Forex Trading 52" />
      <p pageid="39639" ns="0" title="Beginner Investing For Forex Trading 56" />
      <p pageid="39643" ns="0" title="Beginner Investing For Forex Trading 85" />
      <p pageid="39636" ns="0" title="Beginner Investing For Forex Trading 90" />
      <p pageid="39641" ns="0" title="Beginner Investing For Forex Trading 93" />
      <p pageid="38946" ns="0" title="Best Online Paid Survey Android Apps" />
      <p pageid="39133" ns="0" title="Billigt internet 10 mbit - Before you start to look for cheap broadband providers you need to understand how it works." />
      <p pageid="36480" ns="0" title="Bmw Sun-reflective Technology Now In Cars" />
    </allpages>
  </query>
  <query-continue>
    <allpages apcontinue="Build_Muscle_Fast_By_Activating_Your_High_Threshold_Motor_Units" />
  </query-continue>
</api>