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?
答
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?
答
bird
答
bird
你知道世界上都多少人死于禽流感?