When a rare disease ALD threatened to kill the four-year-old boy Lorenzo, his parents refused to give up hope. Doctors explained that there was no cure for ALD, and that he would probably die within three years. But Lorenzo's parents set out to prove the doctor's wrong.
The parents devoted themselves to keeping their son alive and searching for a cure. But doctors and the families of other ALD patients often refused to take them seriously. They thought the efforts to find a cure were a waste of time, and drug companies weren't interested in supporting research into such a rare disease.
However, the parents still refused to give up and spent every available hour in medical libraries and talking to anyone who would help. Through trial and error (反复试验), they finally created a cure from ingredients (调料) commonly found in the kitchen. The cure, named "Lorenzo's Oil", saved the boy's life. Despite the good results, scientists and doctors remained unconvinced. They said there was no real evidence that the oil worked and that the treatment was just a theory. As a result, some families with ALD children were reluctant to try it.
Finally, the boy's father organized an international study to test the oil. After ten years of trials, the answer is: the oil keeps ALD children healthy.
单选题 Doctors said that Lorenzo might die within three years because______.
【正确答案】 C
【答案解析】由文章首段第二句可知，医生解释说还没有治愈ALD的方法，因此洛伦佐很可能在3年内死亡。由此可推知答案为C)。
单选题 The families of other ALD patients thought that______.
【正确答案】 B
【答案解析】由第二段末句可知，其他ALD患者的家属认为，寻找治疗ALD方法的努力只是在浪费时间，即洛伦佐父母的努力是在浪费时间，因此选B)。
单选题 Scientists and doctors believed that Lorenzo's Oil______.
【正确答案】 C
【答案解析】由第三段倒数第二句可知，科学家和医生认为没有确切的证据证明Lorenzo's Oil对这种疾病有疗效，这仅是理论上的治疗方法。由此可推知答案为C)。
单选题 Lorenzo's father organized an international study to______.
【正确答案】 A
【答案解析】由文章末段首句可知，这个孩子的父亲组织了一次国际性的研究来检测这种药的疗效，故答案为A)。
单选题 From the passage we can conclude that______.
【正确答案】 D
【答案解析】文章末句指出，长达10年的试验终于证明这种药能使患有ALD的儿童恢复健康，故答案为D)。