Li Hua had a stomachache this morning.So his mother took him to the hospital.The doctor asked him some questions and looked over him carefully.That's because he drank unboiled water and eat junk food.So the doctor told him never to drink dirty or unboiled water and wash hands often.He should eat less junk food and eat enough fruit and vegetables every day.The doctor also gave him some medicine.Li Hua thanked the doctor and said that he would do what the doctor said.