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　　All over the world people swim for fun．Swimming is enjoyed by people of 　　1　　 ages, from the very young to the very old．There are many places for people to swim in swimming pools．Many schools, hotels and clubs have swimming pools．Some people have pools of 　　2　　 in their yards．

　　Swimming is one of 　　3　　 forms of exercise．It can 　　4　　 hearts and bodies strong．It can also help blood circulate(循环)．Handicapped(残疾的)people can keep their bodies in better condition by swimming 　　5　　 they can't enjoy sports．

　　　　6　　 is a good idea for parents to see to it(务必做到)that their children learn to swim 　　7　　 an early age．So their children will 　　8　　 it for the rest of their lives．

　　There are many rules for water safety．These rules can help save not only your life 　　9　　 the life of a friend．First of all, know 　　10　　．Many schools 　　11　　 swimming lessons to children．Adults(成人)can learn to swim at public pools．　　12　　 rule to remember is never to swim 　　13　　．Always swim with a friend and know 　　14　　 in the water at all times．It is best to swim 　　15　　 in safe places if you are beginners．If every one learned to swim and obeyed the rules for water safety, most drawing(溺水)could be avoided．

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　　in the open air, all types of, watch, China, long, a number of

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