Summer vacation is coming. Many students like swimming in summer. How to stay away from danger? Here are some tips (建议).
Don't swim in the rivers or lakes. It's dangerous. You don't know how deep they are. It's better to go to the swimming pool.
If you want to swim in the pool, ask your parents to go with you. When you need help, they can help you. It's safer.
At school, your teachers often tell you not to swim in the rivers or lakes you're your classmates or friends. Remember the rule.
Before you swim, it's important to do some exercise to warm yourself. If you feel cool, get some water to make your body wet first.
If you see someone is in danger and shouting for help, don't save him by yourself. You'd better shout or call the police for help quickly.
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E. 
