"Read that" vocal command doesn't work

The "Read that" vocal command doesn't work in 2014, and never worked in 2011 either, if I remember well.
(Hope "Read that" is the proper English vocal command; I'm using DNS in French)

So to have the segment read by the synthetized voice, I have to paste the text in the closest program—Word, Outlook...

(This works correctly in competitor programs.)