Frank Dewhurst, 83, was walking in the neighborhood when he saw the sign in his neighbor’s yard（21） by Linda Nall.”I' m type O and I need a kidney transplant（肾脏移植）. Please help me.” Having read about kidney donors before, Dewhurst knew it was （22）to live with one kidney. After discussing his idea with his wife and winning her（23） , he began to take action. More than 5000 kidney donations happen every year, but only a few donors are older than 70. A lot of factors（24）older people from donating kidneys. Kidney function （25） with the age and the recovery takes longer. All participants must take a strict physical evaluation. （26）Doctor Ibrahim first talked to the old man, he didn’t let Dewhurst experience the（27） evaluation process. （28）, he met with Dewhurst for an hour to discuss the problems. He was（29）that Dewhurst was active for his age and seldom took medicine, making him an ideal candidate. Two days’ testing showed that Dewhusrt didn’t have a significant decline（30） kidney operation and his kidney was a perfect match for Nall’s. The transplant operation was successful. Dewhurst has become the oldest donor with only one kidney.