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Every student has to find the best time to do their homework, but usually, students do not succeed in choosing a suitable time for their learning, which causes their interest in reading to disappear.

Vitamins, also known as vitamins, are indispensable nutrients for maintaining life, ensuring health, promoting growth, enhancing body resistance and regulating physiological functions. Specifically, vitamins are divided into two categories, fat-soluble and water-soluble, fat-soluble including vitamin A, vitamin D, vitamin E, vitamin K, water-soluble including vitamin B and vitamin C. The main role of vitamin A is to maintain normal vision and prevent night blindness. Vitamin D is mainly to regulate the metabolism of calcium and phosphorus in the body, promote absorption and utilization, and promote the growth of bones. Vitamin E is mainly to maintain normal reproductive capacity and normal muscle metabolism, and to maintain the integrity of the central nervous and vascular systems. Vitamin k is mainly used to stop bleeding, not only is it the main component of prothrombin, but also promotes the manufacture of prothrombin by the liver, and pediatric patients are prone to vitamin k deficiency.