单项选择题
A．They ran a high fever. B．They died from excessive bleeding. C．Their nervous system was damaged. D．They suffered from heart attack.
A．They locked the couple up in the drawing room. B．They seriously injured the owners of the house. C．They smashed the TV set and the telephone. D．They took away sixteen valuable paintings.
A．Through food. B．Through air C．Through insects. D．Through body fluids.