漫画《无题》告诉我们（  ）

①依法履行义务是享受权利的前提                ②公民在行使权利时要尊重他人权利
③广场舞噪音扰民属于刑事违法行为            ④公民不仅要增强权利观念，而且要增强义务观念 

   We all need to exercise. Doctors say it is good for us. It makes your heart and body strong. It also gives you more energy. And you will feel better yourself. It's best to exercise twice a week. Twenty minutes each time is enough.
   There are many ways to exercise. You can walk, run, play sports, or swim. Many people go to special places to exercise. They are called “fitness centers”. These places have a lot of equitment. Some people buy equitment for their homes. But it is very expensive.Exercising can be fun. Friends can exercise together at fithess center. Or they can play sports together, how do you exercise?