单选题 Scientists will be able to freeze dying people and revive them years later when a cure for their disease has been found opening the door to human immortality, predict excited experts. And their conclusions are not just pie in the sky. They are based on an astonishing experiment in which a dog was frozen for 15 minutes, then revived in perfect health! " The bottom line of experiments like this is the indefinite extension of human life!" declared Dr. Paul Segall, who conducted the frozen dog experiment. " If you''re about to die — you have an incurable disease such as AIDS, or even extreme old age — we could freeze you and stop time for you until we can cure those diseases or reverse a condition like aging. " "What we''re looking at is a gradual victory over death and aging and freezing someone and then bringing them back could be here within four years!" " Not only will freezing allow ill persons to survive until a cure for their disease if found, but it will also open up new possibilities for organ transplants, which will in turn allow people to live much longer perhaps indefinitely. " "Right now, organs taken from a person who''s recently died must be transplanted to another person within a very short time, but with the new technology, body organs could be frozen for use whenever they''re needed. " Doctors could freeze a patient''s body, then warm up just one diseased organ — a lung or a liver, for example. The person could be injected with massive doses (剂量) of drugs that would be toxic (有毒的) to the body if it weren''t frozen. "Older individuals will choose to enter freezing before death, with instructions not to be revived until a means to stop and even reverse aging is discovered. " "Without a doubt, freezing has the potential to make man immortal. And we should see our first freezing centers established within the next 10 years and probably sooner!"