Which of the following drugs is currently widely used in treating opioid dependent individuals?
		A.	codeine
B.	Methadone
C.	Alphaprodine
D.	Pentazocine
		A.	codeine
B.	Methadone
C.	Alphaprodine
D.	Pentazocine
		A.	Brain
B.	Spleen
C.	Lymph nodes
D.	Thymus gland
		A.	Glycerin-water solution
B.	Cement liquid
C.	Alcohol
D.	Only water
		A.	Birth to 8 years
B.	Birth to 12 years
C.	Birth to 6 years
D.	6 years to 12 years
		A.	Kill all pathogenic micro-organisms
B.	Kill all non-pathogenic micro-organisms in the environment
C.	Deactivate all pathogens not spores
D.	Deactivate all spores and dill pathogenic organism
		A.	Are more common than first order kinetics
B.	Decrease in concentration exponentially with time
C.	Have a half – life independent of dose
D.	Show a plot of drug concentration versus time that is linear
		A.	Hairy tongue (lingua villosa)
B.	Hyperplastic candidiasis
C.	Speckled leukoplakia
D.	Desquamative gingivitis