With this pure CSS snippet by Ed Hicks you can show you radio buttons selection as a sentence where the item not selected is crossed-out and the other one is shown, it will work best when you only have two options in the radio button.
If you are having trouble with the pen, try the archived copy on GitHub
Radio Button CrossOut Text Snippet
See the Pen Strikethrough Radios by Ed Hicks (@blucube) on CodePen.0