Winter vacation homework Chinese in the sixth grade of primary school

Can make people feel earache; Strong noise will damage the hearing organs. In the nervous system, strong noise can cause headache, dizziness, burnout, insomnia, emotional anxiety, memory loss, increased EEG slow waves, autonomic nervous system dysfunction and other symptoms. In the cardiovascular system, strong noise will cause changes in pulse and heart rate, elevated blood pressure, arrhythmia, conduction disorder and changes in peripheral blood flow. In the endocrine system, strong noise will cause hyperthyroidism, adrenal cortex function enhancement, basal metabolic rate increase, sexual dysfunction, menstrual disorder and so on; In the digestive system, strong noise will cause digestive dysfunction, gastric dysfunction, gastric acid reduction, loss of appetite and so on. In a word, strong noise will lead to a series of physiological and pathological changes in human body. Someone once investigated 202 people who worked in an environment with noise as high as 95 decibels. The results show that 39% of them are dizzy, 32% suffer from insomnia, 27% have a headache, 27% have a stomachache, 27% are flustered, 27% have poor memory, 22% are upset, 65,438+08% have anorexia and 65,438+have high blood pressure. Therefore, we should not take strong noise for granted, and take measures to prevent it. Of course, people are sensitive to noise, and there are great differences among individuals. Some people are sensitive to noise, and some people have strong adaptability to noise, which is also related to psychological factors such as people's needs and emotions. No matter how different people are, strong noise always needs to be prevented.