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>
    <alllinks galcontinue="B.B.马尔科夫尼科夫" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="B" missing="" />
      <page ns="0" title="B.-P.-E.克拉珀龙" missing="" />
      <page ns="0" title="B.A.拉夫列尼约夫" missing="" />
      <page ns="0" title="B.A.皮利尼亚克" missing="" />
      <page ns="0" title="B.A.肯尼迪" missing="" />
      <page ns="0" title="B.A.谷德" missing="" />
      <page ns="0" title="B.B.博尔特伍德" missing="" />
      <page ns="0" title="B.B.波雷诺夫" missing="" />
      <page pageid="71215" ns="0" title="B.A.A.墨索里尼" />
      <page pageid="222887" ns="0" title="B.A.W.罗素" />
    </pages>
  </query>
</api>