Elevate the injury.Position the wounded part of the body above the level of the heart if possible while you apply direct pressure.

　　Know the pressure points.If direct pressure and elevation don't sufficiently slow the bloodflow，find a pressure point.Large arteries(动脉)found close to the skin's surface supply blood to the head and to each arm and leg.The most common pressure points used during the first aid are located in the upper arms and in the creases above the upper legs.Apply pressure to the closest pressure point to the wound so that the artery is pressed between your fingers and the bone directly behind the artery.If using the pressure point on a leg，you may need to use the heel of your hand instead of your fingers.

　　Resort to a tourniquet(止血带压脉器)．On very rare occasions everything listed above may fail.To prevent the victim from dyingr removed until the victim has reached medical help.Use a tourniquet only if everything listed above has failed.If you use a tourniquet，write down somewhere on the victim the time when it was applied，so medical persons will know how long it has been in place.

　　【语篇解读】　本文是说明文。主要介绍如何止血的一些方法。________．(药膏)on the woundress the wound firmly with your fingers

　　D．place a clean bandage over the wound

　　解析：细节理解题。根据第一段第三句“Place a clean可知A项为正确选项。答案：Aough the cloth，you should ________．解析：细节理解题。根据第一段第四、五句“If blood soaks throughemove it.Instead，cover that cloth with another one and continue to apply pressure to the wound for 7－10 minutes.”可知D项为正确答案。答案：D________ ways are mentioned to stop blood.

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