Question

谁知道下面英语阅读理解的答案？

There has not been a world-wide outbreak of influenza since 1968. Expert say there should have been another by now.
题；The best title of the passage is_____.
A. The vaccines against bird flu B. Preparing for the next flu pandamic
为什么？
原文在哪？

Answer 1

B 找不到，根据最后一句话啊，普通常识。