thE mAin topiC oF this pAssAgE is_____.
A．thE nEw ConCEpt oF mAnAgEmEnt
B．thE grEAt shiFt oF mAnAgEmEnt stylE
C．thE quAlitiEs oF mAnAgErs For thE 21st CEntury
D．thE tEChniquE oF mAnAgErs moDEm mAnAgEmEnt