2. As a balanced diet, it refers to the nutrients contained in the diet (); ( ); ( ); ( ); () It is beneficial to the absorption and utilization of the body and meets the body's weight demand.
3. Middle school students have entered (), and their growth and development are in the period of sudden increase in life (), which is an important period for their all-round development.
4. The main preventive measures of bacillary dysentery are ().
5. AIDS is called (). It is a serious infectious disease caused by ().
6. Meningitis is caused by a disease called (), which is a common acute respiratory infectious disease in spring.
7. Mental health refers to the unity and adaptation of the whole psychological activity () and the objective environment. After strenuous exercise, the body will generate a lot of heat, making the internal organs in a "high fever" state that is much hotter than usual. At this time, if you drink cold water, the throat, esophagus, stomach and other organs will contract sharply when they are cold, which makes people feel uncomfortable. This is what the saying goes, "Blowing the lungs".
Drink cold water after strenuous exercise, especially for temporary pleasure. Drinking a lot of cold water can cause stomach cramps, stomach cramps, and severe syncope, which needs to be sent to hospital for rescue.
Take a rest after exercise, wipe your sweat, take a shower, and then drink warm water. Don't drink too much at a time. It is best to drink light salt water, which can not only quench thirst, but also supplement the salt lost in the body due to perspiration.