Which of the following drugs may be abused because of tolerance and physiologic dependence

A. Lithium (Lithobid) and divalproex (Depakote).
B. Verapamil (Calan) and chlorpromazine (Thorazine).
C. Alprazolam (Xanax) and phenobarbital (Luminal).
D. Clozapine (Clozaril) and amitriptyline (Elavil).

如图18-6-28所示是两处控制照明灯的电路，单刀双投开关A和B分别装在不同的地方，两处都可以开闭电灯。设Y=1表示灯亮，Y=0表示灯灭，A=1表示开关向上扳，A=0表示开关向下扳，B亦如此，灯亮的逻辑式是（）。

A.A

B.B

C.C

D.D