10【疾病类、饮食类】阅读理解20篇-高考英语快速提⾼阅读能⼒之⾼频主题词块速记

【疾病健康类/饮食类】话题阅读练习 高频话题01 疾病健康类 Passage 1 A US man has become the first person in the world to receive a heart transplant from a genetically modified pig. Surgeons say the experimental procedures was the only available option for the patient David Bennett, a 57-year-old from Maryland in the US, who was living with heart disease. Bennett is currently being carefully monitored while specialists at the University of Maryland Medical Center, where the procedure was carried out, determine whether the transplant can keep him alive in the long term. “It was either to die, or do this transplant. I want to live. I know it’s a shot in the dark, but it’s my last choice,” said Bennett. “I look forward to getting out of bed after I recover.” While full heart transplants are more controversial, pig heart valves (瓣膜) have been successfully used for replacements in humans for years. “This was a breakthrough surgery and brings us one step closer to solving the organ shortage crisis. There are simply not enough donor human hearts available to meet the long list of potential recipients,” said Bartley Griffith, the heart surgeon who performed the operation. “We are doing cautiously, but we are also optimistic that this first-in-the-world surgery will provide an important new option for patients in the future.” In the donor pig, three genes that would have led to the repaid rejection of the pig’s heart were knocked out. Six human genes responsible for immune acceptance of the pig heart were then inserted into the genome. Finally, one gene in the pig was removed to prevent excessive growth of the heart tissue once it had been implanted. “This is truly a historic, monumental step forward. While we have long been at the forefront of research driving progress toward the promise of xenotransplantation (异种器官移植) as a practical solution to the organ crisis, many believed this breakthrough would be well into the future,” said Bert O’Malley, president and CEO of the University of Maryland