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We all know that it is 　　1　　 to keep healthy．But not all people know 　　2　　 to keep healthy．After five days’ hard work, we need to have a good rest at weekends．But it seems that some don’t know how to spend weekends in the right way．They enjoy 　　3　　 cards at night and don’t go to bed until midnight or even later．Some gamble(赌博)all night．They forget that to get 　　4　　 sleep is necessary for health．Some never get up early in the 　　5　　 and take some exercise．It is true that doing exercise is very important for us to keep 　　6　　．Some smoke a lot．They forget that 　　7　　 smokers are more likely(可能的)to have lung cancer(肺癌)than those who don’t smoke．Some drink too much wine．　　8　　 too much is harmful(有害的)to the body．Some eat too much fat, they may always 　　9　　 tired．Vegetables are good to the body．But some don’t like eating vegetables．　　10　　 is also very good to body．As a saying goes：“An apple every day keeps the doctor away．” So don’t forget to eat some fruit．

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