thE Author mAintAins thAt hABituAtion to ExCEssivE AlCohol Consumption CAn BE lEArnED. thE mEthoD EmployED to Do so, ExpErimEntAlly, whiCh usED rEinForCEmEnt is______.
A．thE introDuCtion oF AlCohol into thE BlooDstrEAm By inFECtion
B．thE inCrEAsE oF thE ConCEntrAtion oF AlCohol in thE suBjECt’s Drinking wAtEr
C．thE usE oF AnxiEty in An AvoiDAnCE - ApproACh pAttErn
D．inCrEAsing thE Amount oF AlCohol thE suBjECt must Drink EACh timE BEForE giving it A rEwArD