在前面的问题(Including Titles in HTML Requests)中，我了解了如何定制RSS/HTML请求以搜索具有以下关键字的新闻文章:
在Google RSS中，我可以看到显示了以下信息，如"源URL":
<item>
<title>Hong Kong may consider tracking function on ‘Leave Home Safe’ app: health chief - South China Morning Post</title>
<link>https://news.google.com/rss/articles/CBMid2h0dHBzOi8vd3d3LnNjbXAuY29tL25ld3MvaG9uZy1rb25nL2hlYWx0aC1lbnZpcm9ubWVudC9hcnRpY2xlLzMxNjI2NDcvY29yb25hdmlydXMtaG9uZy1rb25nLW1heS1yZXNvcnQtaG9tZS1xdWFyYW50aW5l0gF3aHR0cHM6Ly9hbXAuc2NtcC5jb20vbmV3cy9ob25nLWtvbmcvaGVhbHRoLWVudmlyb25tZW50L2FydGljbGUvMzE2MjY0Ny9jb3JvbmF2aXJ1cy1ob25nLWtvbmctbWF5LXJlc29ydC1ob21lLXF1YXJhbnRpbmU?oc=5</link>
<guid isPermaLink="false">CBMid2h0dHBzOi8vd3d3LnNjbXAuY29tL25ld3MvaG9uZy1rb25nL2hlYWx0aC1lbnZpcm9ubWVudC9hcnRpY2xlLzMxNjI2NDcvY29yb25hdmlydXMtaG9uZy1rb25nLW1heS1yZXNvcnQtaG9tZS1xdWFyYW50aW5l0gF3aHR0cHM6Ly9hbXAuc2NtcC5jb20vbmV3cy9ob25nLWtvbmcvaGVhbHRoLWVudmlyb25tZW50L2FydGljbGUvMzE2MjY0Ny9jb3JvbmF2aXJ1cy1ob25nLWtvbmctbWF5LXJlc29ydC1ob21lLXF1YXJhbnRpbmU</guid>
<pubDate>Sat, 08 Jan 2022 08:00:00 GMT</pubDate>
<description><a href="https://news.google.com/rss/articles/CBMid2h0dHBzOi8vd3d3LnNjbXAuY29tL25ld3MvaG9uZy1rb25nL2hlYWx0aC1lbnZpcm9ubWVudC9hcnRpY2xlLzMxNjI2NDcvY29yb25hdmlydXMtaG9uZy1rb25nLW1heS1yZXNvcnQtaG9tZS1xdWFyYW50aW5l0gF3aHR0cHM6Ly9hbXAuc2NtcC5jb20vbmV3cy9ob25nLWtvbmcvaGVhbHRoLWVudmlyb25tZW50L2FydGljbGUvMzE2MjY0Ny9jb3JvbmF2aXJ1cy1ob25nLWtvbmctbWF5LXJlc29ydC1ob21lLXF1YXJhbnRpbmU?oc=5" target="_blank">Hong Kong may consider tracking function on ‘Leave Home Safe’ app: health chief</a> <font color="#6f6f6f">South China Morning Post</font></description>
<source url="https://www.scmp.com">South China Morning Post</source>
</item>
是否有可能以某种方式将有关源URL的信息添加到查询本身中？
例如，假设我有兴趣在此处查看此页面的旧版本:100.那么我可以说我只想从"https://covid.cdc.gov"？"返回源URL吗