The attack on Fort Sumter near Charleston ______ a sharp response from the North, which led to the American Civil War.

A．plea
B．petition
C．patent
D．claim

A．If the pleasurable taste of whisky leads to an acquired taste for brandy, then stimulus generalization has occurred.
B．Slapping a child for misbehaving may over time encourage him to repeat his misbehavior.
C．If a person has learned to drink under two sets of conditions, both must be present in order to induce him to drink.
D．The troubles experienced by alcoholics as a result of their alcoholism tend to encourage them to abstain from drinkin