单项选择题
A.3,000 B.300 C.3,000,000 D.30,000
A.the firefighters were unfair B.the fire was moving fast making it dangerous C.the firefighters were overly careful D.it was easier for the firefighters
A.They never supported the hospital. B.The plant is near the hospital. C.Many chemicals for industry are not tested. D.He coughed so hard that he broke his ribs.