高考英语一轮复习 Unit5 First aid导学案 新人教版必修5-新人教版高三必修5英语学案

河北省武邑中学 2016 届高考英语一轮复习 Unit5 First aid 导学案 新人教版必修 5 FIRST AID FOR BURNSThe skin is___1____ essential part of your body and its largest organ. You have three layers of skin ____2______ act as a barrier against disease, poisons and the sun’s harmful rays. The functions of your skin are also very complex: it keeps you warm or cool; it prevents your body from losing too much water; it is where you feel cold, heat or pain and it gives you your sense of touch. So as you can imagine, if your skin gets _____3_____(burn) it can be very serious. First aid is very important first step in the treatment of burns.Causes of burnsYou can get burned by a variety of things: hot liquids, steam, fire, radiation (by being close to high heat or fire, etc), the sun, electricity or chemicals.Types of burnsThere are three types of burns. Burns _____4_______(call)first, second or third degree burns, depending on which layers of the skin are burned.●First degree burns These affect only the top layer of the skin. These burns are not serious and should feel better within a day or two. Examples include mild sunburn and burns caused by _______5________(touch) a hot pan, stove or iron for a moment.●Second degree burns These affect both the top and the second layer of the skin. These burns are serious and take a few weeks to heal. Examples include severe sunburn 1and burns caused by hot liquids.●Third degree burns These affect all three layers of the skin and any tissue and organs under the skin. Examples include burns _____6_____(cause) by electric shocks, burning clothes, or severe petrol fires. These burns cause very severe injuries and the victim must go to hospital at once.Characte...