(B)

    Everyone knows that exercise is important．We all need to exercise．Doctors say it is good for us．It makes your heart and body strong．Children who often exercise are more alert(灵活的).That means they do better in tests and schoolwork than those who don't exercise．

    There are many ways to exercise．You can walk，run，swim，skate or play ball games．Make sure you exercise in the following ways：You have to like what you are doing．Exercise enough--but not too much．It's best to exercise twice a week．Thirty minutes each time is enough．Try all kinds of sports until you find one，two or three sports that feel right for you．

    You can exercise at fitness centers．They have a lot of equipment(设备)there．The equipment will help exercise your arm，legs and other parts of your body to make you healthy．Some people buy equipment for their homes．But it's very expensive．Exercising can be fun．Friends can exercise together at fitness center，or they can play sports together．How do you exercise?

①传统文化是维系民族生存和发展的精神纽带

②传统文化是民族历史文化成就的重要标志，可以集中展示本民族文化

③任何时代的文化，都离不开对优秀传统文化的继承，否则民族文化就没有根基

④坚持文化创新的正确方向就必须坚持“守旧主义”，反对“历史虚无主义”