A man was telling friends how first-aid classes had prepared him for an emergency."I saw a woman hit by a car," he said, "She had a broken arm, a twisted knee and a skull fracture." "How horrible! What did you do?" "Thanks to my first-aid training I knew just how to handle it. I sat on the curb and put my head between my knees to keep from fainting."一个男子正在告诉朋友们急救课是如何让他为突发事件做好准备的。“我看见一个女人被车子撞了，“他说，“她手臂断了，膝盖弯曲，头骨破裂。”“太可怕了！你做了些什么？”“因为我上过急救培训，我知道该怎么处理这件事，我在路边坐下来，把我的头放在膝盖上，以防止昏倒。”