Section_ⅠWarming Up & Reading - Pre­reading

　　FIRST AID① FOR BURNS

　　The skin② is an essential③ part of your body and its largest organ④. You have three layers⑤ of skin which act as⑥ a barrier⑦ against disease, poisons⑧ and the sun's harmful rays⑨. The functions⑩ of your skin are also very complex⑪： it keeps you warm or cool⑫； it prevents your body from losing⑬ too much water; it is where you feel cold, heat or pain⑭ and it gives you your sense of touch⑮. So as you can imagine, if your skin gets burned it can be very serious. First aid is a very important first step in the treatment⑯ of burns.

　　Causes of burns

　　You can get burned by a variety⑰ of things: hot liquids⑱， steam, fire, radiation⑲ (by being close to high heat or fire, etc), the sun, electricity or chemicals.

　　①first aid [eId](对伤患者的)急救

　　②skin [skIn] n．皮；皮肤

　　③essential [I'senʃl] adj.最重要的；不可缺少的；本质的

　　④organ ['ɔːɡən] n．器官

　　⑤layer ['leIə] n．层；层次

　　⑥act as充当；担任

　　⑦barrier ['bærIə] n．屏障；障碍(物)

　　⑧poison ['pɔIzn] n．毒药；毒害 vt.毒害；使中毒

　　⑨ray [reI] n．光线；射线

　　⑩function n．功能；功效

　　⑪complex ['kɒmpleks] adj.复杂的

　　⑫keeps you warm or cool为"keep＋宾语＋宾补"结构。

⑬prevent ... (from) doing ...阻止......做......