第18题: [单项选择]H-live-n-one virus in the passage means ______. A. farm birds B. infected farm animals C. people died in Hong Kong D. a different kind of bird flu virus 参考答案:D 答案解析:此题考查文章句意理解、细节定位。略读文章,发现在第2段中有a different kind of bird flu virus.It is called the h-five-n-one virus。