Why can explosives be used to stop the fire from burning?
举一反三
- Burning waste ______ energy that can be used for electric power or heating.
- Why can water put out a fire
- The （） can tell us how much heat we can get from the burning of an oil.
- The fire ______ for three hours before the fire fighters arrived. A: had been burning B: had burned C: would have burning D: has been burning
- Questions 11 to 18 are based on the following talk. A: Because they live at 350,000 different places. B: So doctors can treat injured fire fighters quickly. C: Because they need medical examinations. D: So they can be removed from burning buildings.