How many people have died of b____flu in the world,do you know?

问题描述:

How many people have died of b____flu in the world,do you know?

填写:bird
bird flu: 禽流感
全句:你知道世界上都多少人已死于禽流感?

bird

bird
你知道世界上都多少人死于禽流感?