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  3. Where is the experimental AIDS vaccine tested? Which statement is TRUE according to the text?

Where is the experimental AIDS vaccine tested? Which statement is TRUE according to the text?

admin2009-04-27  55
问题 Where is the experimental AIDS vaccine tested?
Which statement is TRUE according to the text?
选项 A、AIDS is the most fatal and rampant disease.
B、Vaccine will be the only effective way to control a virus.
C、VaxGen’s vaccine would provoke an immune response strong enough to stop the virus from invading healthy cells.
D、Most vaccines being tested did not contain virus.
答案D
解析 是非判断。文章第一句话"艾滋病是世上最致命、最猖獗的疾病之一"就告诉我们，A是不正确的。而在第二段中说道"大多数艾滋病研究人员认为疫苗将是控制病毒的唯一有效办法"，并不是所有人都认为是。故B不对。第三段开头说"像其他正在试验中的疫苗一样，VaxGen公司研制的疫苗本身不含病毒，也不会诱发艾滋病。相反，这种疫苗含有少量人造基因型病毒，科学家希望它们能激发一种足够强的免疫反应能力，来阻止艾滋病病毒侵入人体健康细胞"，说明D是对的，而C只是科学家的希望而已。
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