--force-html -i file.html

[Dan Jacobson]

$ man wget
       -i file
       --input-file=file

           The file need not be an HTML document (but no harm if it
           is)---it is enough if the URLs are just listed sequentially.

Well even with -i file.html, one still needs --force-html. So "yes
harm if it is".  GNU Wget 1.10.2