单项选择题
A.From telephone call. B.From the Kansas computer center in the city hall. C.From radio station of the Kansas city. D.From television.
A.Medical information about all the people that live in a burning building. B.Where the burning building is located and its size, type and content. C.Health record of each of the city's nine hundred firefighters. D.The possible dangers ahead of them,
A.they can take special care to find sick persons and remove them quickly and safely B.it helps them locate the burning buildings and teaches them how to put out fires C.it helps to save the life of injured firefighters D.they can learn about possible dangers and prepare for them