阅读与回答问题

　　Swimming can be lots of fun．We enjoy ourselves when swimming in the sea or in public swimming pools．We know, many beaches and swimming pools usually have life-guards to look after the swimmers．But still there are people drowned(溺水)every year．Why does this happen? What can we do about it? Here are some things we should do．

　　Learn to float and swim with the help of your friend or an instructor．This is the most important thing for anyone who wants to swim．The best place to learn is in a swimming pool, where there are no big waves．Never try to swim in rivers．It is very dangerous! You don't know how deep it might be．

　　Do some warm-up exercises and take a shower before swimming．Always swim in water that is not deep for you to stand up before you become a very good swimmer．

　　Do not push or splash(溅湿)in the water．Swimming can be tiring, so do not stay in the water when you are tired．If you get into difficulty in the water, keep calm!If you keep calm, you will not sink．Most people are drowned because they become frightened．Remember you have learnt how to float!

　　Never go swimming alone．Go with some friends．If you find one of your friends is in danger, keep calm! Decide the best way to help him．If you cannot reach him, ask a life-guard．

1．Where can swimming bring you pleasure?

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2．What is the most important thing for those who want to swim?

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3．Why is swimming in rivers dangerous?

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4．Who will be asked for help if your friends are in danger?

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5．What do you think of swimming?

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