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  3. Which of the following is the most appropriate title for the passage? Which of the following is the most dangerous virus accord

Which of the following is the most appropriate title for the passage? Which of the following is the most dangerous virus accord

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问题 Which of the following is the most appropriate title for the passage?
Which of the following is the most dangerous virus according to the passage?
选项 A、Influenza A virus.
B、Influenza B virus.
C、Influenza C virus.
D、The uncertain one.
答案A
解析 在本文的第二段谈到病毒的时候，作者特别谈到："The influenza A，which affects animals also，is extremely unstable and is responsible for some of the worst outbreaks of the disease"．因此我们可以得出结论：A型感冒病毒是最危险的病毒。
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