9 Вариант

«Nutrition»

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Nutrition is all the ways in which any living thing takes in food and uses it for growth and energy. Food substances necessary for life are called nutrients.

Your body, eyes, ears, heart, legs, arms, brain, everything - is made up of billion of cells, and very single one of these myriad cells can grow and function well only if it is supplied with the correct nutrients. The cells perform all function necessary for living, like breathing and eating. They make, possible everything you do, from sleeping to swimming. Furthermore, the cells produce new cells and repair old ones. Food provides the materials for all these complex processes. Food also supplies other needs. It has to satisfy the eyes, the taste and the appetite. No wonder nutrition is important!

For hundreds of years even, the experts knew very little about food, but in the first 60 years of the 20th-century Vast strides have been made. Nutritionists have learned that there are some 50 nutrients necessary for good health, and that some of these can event prevent diseases that once were devastating such as scurvy, rickets, bribery, and pellagra. When there is enough food are people eat wisely, they are healthier than ever before. But eating wisely does not mean gorging and becoming fat. It means eating a variety of foods and not too much, so that one maintains a proper weight.

Unfortunately, for half the world's people good nutrition is not yet possible. Millions of people in Asia, Africa, in South America are sick, stunted, are dying from lack of food.

Recently more nutritious types of wheat corn, and rice have been developed. Greater use of fertilizers and crop rotation has also helped to provide more food for the undernourished people of the world.

Good nutrition means getting enough of the necessary nutrients. With a little information about the various groups of nutrients, everyone can learn how to choose a well-balanced diet that promotes health and well-being.

Учебники и учебные пособия

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Учебные пособия по обучению чтению.

Учебные пособия по обучению лексике.

Книги для чтения по специальностям.

Отраслевые англо-русские словари.