大学核心英语教程1_3(B).ppt

Every year many people die of fire. What’s this ? It’s fire. Are you afraid of big fire? Do you know what can cause fire? Can you make a list of things you know that can start a fire? Match(es) Burning cigarette ends Gasoline (Petrol) Gas Electricity Lightning firecracker Wait and do nothing until fire fighters come. Act rapidly and keep your head. Sound the alarm in the building. (?) (?) (?) What should you do in case of fire? Because fire fighters know how fires behave and how to put out them. Give an emergency call to the fire station. (? ) What’s the fire department’s telephone number? 119. Turn off all the switches so as to cut off the power supply. (? ) Open doors can provide enough draft so that a fire can run wild. Open doors and windows on a fire. Because fire goes wherever it can, especially following a draft (通风). (?) So close the doors and windows so as not to let the air in. Electrical fire needs fire extinguishers (灭火器), but the smothering agent (灭火剂) must be a non-conductor (绝缘体), a material that will not conduct electricity. Use water to put out an electrical fire. (?) Because oil can separate itself from water and go on burning. Fire fighters have to smother oil fires with a blanket of powder or foam (一层粉末或泡沫). They use special fire extinguishers that spread chemicals to put out an oil fire. Use water to put out an ordinary fire. Use water to smother (熄灭) an oil fire. (? ) (?) At this moment we should help to evacuate (疏散) old people and children and dangerous goods that can easily catch fire. Try to save valuable things as quickly as possible. (?) Let’s see what we should do in case of fire: Act rapidly and keep your head. Sound the alarm Give an emergency call to the fire station Turn off all the switches Close the doors and windows Use fire extinguishers to put out fires. Evacuate old people and children Para 1 Today a powerful army of fire fighters stands ready to help the moment a fire breaks out. But it is important for each