（江苏省盐城市景山中学2013年3月调研，四C）
In recent years advances in medical technology have made it possible for people to live longer than in the past.New medicines and instruments are being developed every day to extend（延长）life.However，some people，including some doctors， are not in favour of these life extending measures，and they argue that people should have the right to die when they want.They say that the quality of life is as important as life itself，and that people should not be forced to go on living when conditions of life have become unbearable（不能忍受的.They say that people should be allowed to die with dignity（尊严） and to decide when they want to die.Others argue that life under any conditions is better．
57.In recent years, people can live longer than in the past,It’s because of_________.
A.the development of medical technology
B.big hospitals
C.good doctors
D.both B and C
