【正文】
hing in your body is wrong. You may have more than(不只 ) one headache each month. Usually a fever or some other illness(疾病 ) may cause headaches. You may get a headache when you work too hard. You may get a headache when you can’t get enough sleep. And you may get a headache when you exercise on an empty(空的 ) stomach(胃 ). If you have headache often, you need to see a doctor. Headaches Read and understand What may cause headaches? A fever or some other illness may cause headaches Working too hard may cause headaches You may get a headache when you can’t get enough sleep Exercising on an empty stomach may cause headaches What else may cause headaches? Discuss in g