whiCh oF thE Following CAn BE An AppropriAtE hEADing For thE pAssAgE
A．DiFFErEnt pAttErns oF spEECh in DiFFErEnt situAtions.
B．rEsponsE mAtChing AnD spEECh DivErgEnCE.
C．soCiAl intEgrAtion or imitAtion
D．wAys oF spEAking: prEsEnt AnD pAst.