小题1:A
小题2:D
小题3:D
小题4:D
小题1:细节理解题，由文中语句“In recent years advances in medical technology have made it possible for people to live longer than in the past．”可知。
小题2:细节理解题，由文中语句people should not be forced to go on living when conditions of life have become unbearable．They say that people should be allowed to die with dignity(尊严)and to decide when they want to die．理解可知。
小题3:理解推断题。
小题4:细节理解题，由文中语句“people should be allowed to die with dignity(尊严)and to decide when they want to die”可知。