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American health officials recently approved the first gene therapy treatment for patients suffering from a genetic mutation that destroys their ability to see. It is the first gene therapy approved where a corrective gene is given directly tonpatients.n美國健康官員最近批准第一個罹患因基因變異而造成視力損傷病人的基因治療法這是第一個直接對病患校正基因的基因治療批准(A) determination 決心(B) precaution 預防(C) mutation 突變(D) dedication 奉獻official 官員approve 批准 贊同gene 基因 遺傳因子therapy 治療corrective 校正的