You can have any text spoken on a Mac computer. To have text spoken, you can highlight the text you want spoken and go to Services > Speech > Start Speaking.
There is an easier way to invoke text-to-speech. Go to System Preferences>Speech and click on the Text-to-Speech panel. Check the Speak selected text when the key is pressed. Then select the Set Key button. You can then set a hot key to invoke text to speech. Close out of System Preferences. Now select the test you want spoken and hit your hot key.
