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?

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自2013年1月25日公安部部署全国公安机关开展为期一年的“打击食品犯罪，保卫餐桌安全”专项行动以来，公安机关已破获相关案件120余起，抓获违法犯罪嫌疑人350余名，2月3日晚公安部发布了六起打击食品安全犯罪的典型案例。