as3.0 Mouse Keyboard is included in MC Monitor

scene to the MC and the scene respectively keyboard enter listening :
function Keyenter (event:keyboardevent): void {
  if (event.keycode==13) {
    switch (event.target) {
   & Nbsp;  case My_text:
        trace ("it");
         break;
      default:
        trace ("You Clicked Stage ");
        break;
    }

  
}
Stage.addeventlistener (Keyboardevent.key_down, keyenter);

Add the mouse monitor to the scene stage and MC separately :
function Testit (e:mouseevent): void {
Switch (e.target) {
Case My_text:
Trace ("You click my_text!");
Break
Case stage:
Trace ("You clicked stage!");
Break
}
}
Stage.addeventlistener (Mouseevent.click,testit);

to set the default focus in the stage :
Stage.focus=my_text;

If you want to make the MC effective. Need to add:
My_mc.buttonmode=true;

the keyboard enter key for the general MC listens on :
_pager_mc.addeventlistener (Keyboardevent.key_down, Keyenter);
Function Keyenter (event:keyboardevent): void {
  if (event.keycode==13) {
   & Nbsp;_pager_mc.removeeventlistener (Keyboardevent.key_down, Keyenter);
    trace ("it");
  }
}

Thanks for the help of Volcano brother. Learned A:
generally as long as the keyboard-related code, the direct test, you must remember to disable shortcut keys .
At the time of the test. On the control---"Disable shortcut key" before the tick.