[单选题]H-live-n-one virus in the passage means ______.
a different kind of bird flu virus
解析:
37.答案为D 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。注意其中的代词it,它代表a
different kind of bird flu virus,故选D为答案。