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外语
The best title for the text may be ______. What does the example of the Smallpox Vaccine illustrate?
The best title for the text may be ______. What does the example of the Smallpox Vaccine illustrate?
admin
2009-06-24
21
问题
The best title for the text may be ______.
What does the example of the Smallpox Vaccine illustrate?
选项
A、The possible negative outcome of administering vaccines.
B、The practical use o1’ a vaccine to control an epidemic disease.
C、The effectiveness of vaccines in eradicating certain disease.
D、The method by which vaccines are employed against the disease.
答案
A
解析
题目问:"天花疫苗这个举例是说明什么情况?"此题可定位于第3自然段,且第3、4自然段的主题就是使用疫苗可能会带来负面效果,因此选项"使用疫苗可能会带来负面结果"为正确选项。而"疫苗的实际使用来控制传染病","疫苗在于消除某些疾病的有效性"和"疫苗对付疾病所使用的方法"都不是这个举证所谈论的观点。
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