（56）___．Brushyourteethtwicedailyandvisitthedentistatleastonceayear．Themouthisamirrorofdisease．Theoral（口腔）examisnotonlyforthehealthofteeth，butthewholebody．（57）___．Studieshaveshownthatmanyd

　　（56）___．Brush your teeth twice daily and visit the dentist at least once a year．The mouth is a

　　mirror of disease．The oral （口腔）exam is not only for the health of teeth，but the

　　whole body．

　　（57）___．Studies have shown that many diseases have something to do with less or no exercise．Try to do it for 30minutes a day，5days or more a week．

　　（58）___．When you are eating，notice how your body feels．When your stomach feels

　　comfortably full，stop eating．Eating too much makes you feel uncomfortable．If you

　　do it too often，it can make you unhealthy and fat．

　　（59）___．Everyone knows that water is important．Besides that，kids need plenty of calcium（钙）

　　to grow strong bones，and milk has a lot of it．Every day you should drink at least three cups of milk，when you are 9years old or older．

　　（60）___．We all know that eating fruit and vegetables can help us stay healthy，but many of us

　　only eat our favorite foods．Remember that we can only get the nutrition （营养） we

　　need by eating different kinds of foods，especially fruit and vegetables．

　　Choose the best topic from A to F according to the meaning of the passage．

　　A．Eat a variety of foodsB．Drink water and milk most oftenC．Listen to your bodyD．Only eat your favorite foodE．Oral healthF．Exercise for life