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  3. Promising Results from Cancer Study A new experimental vaccine(疫苗)has shown promising results in the fight against lung canc

Promising Results from Cancer Study A new experimental vaccine(疫苗)has shown promising results in the fight against lung canc

admin2013-06-25  35
问题                     Promising Results from Cancer Study
    A new experimental vaccine(疫苗)has shown promising results in the fight against lung cancer. In a small Texas-based study, a vaccine developed by scientists at Baylor University Medical Centre in Dallas, USA, cured lung cancer in some patients and slowed the progress of the disease in others.
    Researchers have reported encouraging findings from this small study. Forty-three patients suffering from lung cancer were involved in these trials. Ten of these patients were in the early stages and thirty-three in the advanced stages of the disease. They were injected with the vaccine every two weeks for three months, and were carefully monitored for three years. In three of the patients in the advanced stages of cancer, the disease disappeared and in the others, it did not spread for five to twenty-four months. However, no great difference was seen in the patients in the early stages of the illness.
    This new vaccine uses the patient’s own immune system. It is made specifically for each patient and is injected into the arm or leg. It stimulates(刺激)the body’s immune system, which then recognizes that the cancer cells are harmful, and attacks and destroys them.
    The vaccine could be effective against other forms of cancer. It offers great hope for the treatment of cancer in general, although further studies are needed before such treatment can be widely used.
All the patients were from Dallas.
选项 A、Right
B、Wrong
C、Not mentioned
答案C
解析 题意：所有患者都来自达拉斯。关键词是Dallas。依据此关键词，可在文中第一段第二句找到相关叙述：“In a small Texas—based study．a vaccine developed by scientists at Baylor University Medical Centre in Dallas，USA，curedlung cancer in some patients and slowed the progress of the disease in others．”(位于美国达拉斯的贝勒大学医学中心的几位科学家研制出了一种疫苗，这种疫苗在一个基于德克萨斯州的小型研究中治愈了一些肺癌患者，减缓了其他患者的病情发展过程。)由此可知，研制疫苗的科学家都来自位于达拉斯的贝勒大学医学中心，而病人是不是都来自达拉斯，这一点文中并没有提到，故此说法为“未提及”的。
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