In Kansas, Missouri, a computer helps fire－fighters. The computer contains【C1】______about

In Kansas, Missouri, a computer helps fire-fighters. The computer contains【C1】______about every one of the 350 000 street addresses in the city. When a fire-fighter answers a call, the computer gives him important information about the【C2】______building. The computer can give the【C3】______of the building and its size, type and content. In fact, the computer system has almost unlimited ways of helping fire-fighters with their problems. For example, it can give【C4】______information about invalids living in a burning building. With this information the firefighters can take special care to find these sick persons and remove them quickly and【C5】______. The Kansas City Computer System also contains a medical【C6】______of each of the citys 900 firefighters. This kind of information is【C7】______useful when a firefighter is injured. With this medical information doctors of a hospital can treat the injured fire-fighter more quickly and easily. The fire-fighters themselves greatly【C8】______the computer help. They know about possible dangers ahead【C9】______them and can prepare for them. Many times the computer information helps to save life and property, sometimes the lives are【C10】______of the fire-fighters themselves.

【C1】

A．material

B．situation

C．content

D．information

请帮忙给出正确答案和分析，谢谢！