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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20110810155707" timestamp="2011-08-10T15:57:07Z" ns="0" title="Main Page" />
        <page value="20140328063225" timestamp="2014-03-28T06:32:25Z" ns="0" title="01" />
        <page value="20140329090604" timestamp="2014-03-29T09:06:04Z" ns="0" title="专栏:经济日报" />
        <page value="20140329101842" timestamp="2014-03-29T10:18:42Z" ns="0" title="国际商情.商情百科(专栏) 相关产业介绍(C0-TW-EDN-AA0038)" />
        <page value="20140329102026" timestamp="2014-03-29T10:20:26Z" ns="0" title="国际商情.商情百科(专栏) 相关产业介绍(C0-TW-EDN-AA0037)" />
        <page value="20140329102552" timestamp="2014-03-29T10:25:52Z" ns="0" title="国际商情.商情百科(专栏) 相关产业介绍(C0-TW-EDN-AA0036)" />
        <page value="20140329102854" timestamp="2014-03-29T10:28:54Z" ns="0" title="国际商情.商情百科(专栏) 相关产业介绍(C0-TW-EDN-AA0035)" />
        <page value="20140329103028" timestamp="2014-03-29T10:30:28Z" ns="0" title="国际商情.商情百科(专栏) 相关产业介绍(C0-TW-EDN-AA0034)" />
        <page value="20140329103112" timestamp="2014-03-29T10:31:12Z" ns="0" title="国际商情.商情百科(专栏) 相关产业介绍(C0-TW-EDN-AA0033)" />
        <page value="20140329103433" timestamp="2014-03-29T10:34:33Z" ns="0" title="国际商情.商情百科(专栏) 相关产业介绍(C0-TW-EDN-AA0032)" />
      </results>
    </querypage>
  </query>
</api>