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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