onE oF thE grEAt ChAngEs Brought ABout By thE knowlEDgE soCiEty is thAt ______
A．thE DiFFErEnCE BEtwEEn thE EmployEE AnD thE EmployEr hAs BEComE insigniFiCAnt
B．pEoplE' s trADitionAl ConCEpts ABout work no longEr holD truE
C．most pEoplE hAvE to tAkE pArt-limE joBs
D．pEoplE hAvE to ChAngE thEir joBs From timE to timE