__________,A Stimulant,is What Makes Cigarette Smoking So Addictive

Q39: Everyone has dreams,even if they do not

Q40: _ drugs produce a biological or psychological

Q41: In _ theory,dreams represent unconscious wishes that

Q42: Morphine and heroin are examples of _,which

Q43: _ is characterized by constricted breathing during

Q45: Psychoactive drugs include caffeine,nicotine,and amphetamines.

Q46: _ is uncontrollable sleeping that occurs for

Q47: _ produce a sense of relaxation,but they

Q48: People who suddenly stop smoking do not

Q49: The key to meditation is concentrating on