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="Downloading_WRF-GC|105" />
  </query-continue>
  <query>
    <pages>
      <page pageid="9" ns="0" title="Research underconstruction" />
      <page pageid="11" ns="0" title="People" />
      <page pageid="20" ns="0" title="Contract" />
      <page pageid="22" ns="0" title="Research" />
      <page pageid="70" ns="0" title="Writing scientific papers" />
      <page pageid="152" ns="0" title="气象气候学2021秋" />
      <page pageid="188" ns="0" title="气象气候学2022秋" />
      <page pageid="204" ns="0" title="气象气候学2023秋" />
      <page pageid="226" ns="0" title="气象气候学2024秋" />
    </pages>
  </query>
</api>