题干

科学家们用磷脂制成双分子层的微球体,里面包裹着抗癌药物,外面带上单克隆抗体,制成“生物导弹”.下列有关叙述不正确的是(  )

 

A:单克隆抗体的化学本质多数是蛋白质,少数是RNA

B:单克隆抗体的制备应用了动物细胞融合和动物细胞培养技术

C:被“生物导弹”消灭的癌细胞是抗原

D:“生物导弹”治疗癌症,疗效高,毒副作用小

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A

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    Having experienced a shocking electrical accident, which caused him to become both blind and deaf, James Franco's world became completely dark and quiet for almost ten years. The loss of sight and hearing threw him into such sorrow that he tried a few times to put an end to his life. His family, especially his wife, did their best to tend and comfort him and finally he regained the will to live.

    One hot summer afternoon, he was taking a walk with a stick near his house when a thunderstorm started all at once. He stood under a large tree to avoid getting wet, but he was struck by lightning. Witnesses (目击者) thought he was dead but he woke up 20 minutes later, lying face down in muddy water. He was trembling badly, but when he opened his eyes, he could hardly believe what he saw: a tree and a muddy road. When Mrs. Franco came running up to him, shouting to their neighbors to call for help, he could see her and hear her voice for the first time in nearly ten years.

    The news of James regaining his sight and hearing quickly spread and many doctors came to examine him. Most of them said that he regained his sight and hearing from the shock he got from lightning. However, none of them could give a compelling answer as to why this should happen. The only reasonable explanation given by one doctor was that, since James lost his sight and hearing as a result of a sudden shock, perhaps, the only way for him to regain them was by another sudden shock.