unit 5 first aid
《单元导航》
there were 760,327 traffic accidents in


period 1 warming up and reading
step 1.pre-reading
quiz: how much do you know about first aid ? ( t or f or choose the best answer)
1. if a person loses one third of his / her blood, he / she may die.
2. in a car accident, we should try to get the wounded out of the car first.
3. if one stops his / her breath about 4 – 5 minutes, his / her brain will be damaged.
4. scratches(抓伤) from a family pet can’t carry disease.
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