2. 考研
  3. How do vaccines protect humans from diseases according to paragraph 2? The best title for this text would be"______"

How do vaccines protect humans from diseases according to paragraph 2? The best title for this text would be"______"

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问题 How do vaccines protect humans from diseases according to paragraph 2?
The best title for this text would be"______"
选项 A、The Smallpox Vaccine: An Analysis
B、How Vaccines Work
C、Vaccines: Methods and Implications
D、A Warning on the Negative Side Effects of Vaccines
答案C
解析 文章标题。文章第一段最后一句指出：接种疫苗可以用来保护全部人口，控制疾病蔓延。第二段介绍了接种疫苗的过程、方法；第三段指出了一些危险因素：最后一段总结上文，再次强调接种疫苗的重要意义。
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考研英语一

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