Прочитайте текст и ответьте на вопрос: What are Vitamin B1 Vitamin B2 Vitamin B6 Vitamin B12 Vitamin...: ответ на тест 911575 - Английский язык

Vitamin A is an unsaturated cyclic alcohol.
The source of all vitamin A is in the carotenoid pigments, the yellow-coloured compounds occurring in all chlorophyll-containing plants.
In pure form it is a pale yellow oil, soluble in fat solvents, having an ultra-violet absorption spectrum. The ester forms of the vitamin have been found to possess greater stability than the free alcohol.
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Where is the source of all vitamin A in?

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Nutritionists think there are13 vitamins that humans need. 1_______. Vitamin A is important for healthy skin and eyes. Vitamin A in the diet comes from deep yellow fruits and vegetables, such as carrots, dark green leafy vegetables and milk, liver, cod-liver oil. When people have enough B vitamins, their appetite is good and their nerves are calm. 2_______.Vitamin C helps skin tissues to recover from cuts and burns. 3_______. Vitamin D is called the “sunshine” vitamin. It is also in cod-liver oil, milk and butter. Vitamin D helps to build strong bones. 4_______.

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What is vitamin C essential for?
Vitamin С (ascorbic acid) is essential for the normal functioning of living cell and is involved in many enzymatic reactions. It is required for the development of cartilage, teeth and bones, for wound healing and aiding the absorption of iron from the intestin. Gross deficiency causes scurvy.

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The National Health Service provides free treatment for residents of Belarus. Visitors may use the service if there are special agreements between their countries and Belarus. Otherwise they are expected to pay.
We have hundreds of doctors and paramedical workers including primary health workers, laboratory assistants and nurses. The fundamental principle of our health service is the preventation of diseases. Prophylaxis is a part of the state policy.

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The public health system of Belarus combines a variety of medical institutions. There are policlinics, hospitals and other curative and preventive institutions operating in towns and cities. Emergency aid is provided by physicians of emergency stations.
Local government authorities provide assistance for the elderly and the disabled.

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A private healthcare sector has emerged in Russia. There are private practices in the country. The state fund covers a basic healthcare package; however citizens who can afford private insurance can ensure that they receive the best medical care available. Private medical services include treatment by specialists, hospitalisation, prescriptions, pregnancy and childbirth and rehabilitation. The premises, equipment and personnel are funded by private insurance contributions.