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  3. Relations between Health and Food Increasingly, over the past ten years, people-especially young people-have become aware of

Relations between Health and Food Increasingly, over the past ten years, people-especially young people-have become aware of

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问题                 Relations between Health and Food
    Increasingly, over the past ten years, people-especially young people-have become aware of the need to change their eating habit, because much of the food they eat, particularly processed food, is not good for the health. Consequently, there has been a growing interest in natural foods: foods which do not contain chemical additives and which have not been affected by chemical fertilizers, widely used in farming today.
    Natural food, for example, are vegetable, fruit and grain which have been grown in soil that is rich in organic matter. In simple terms, this means that the soil has been nourished by unused vegetable matter, which provides it with essential vitamins and minerals. This in itself is a natural process compared with the use of chemicals and fertilizers, the main purpose of which is to increase the amount— but not the quality-of foods grown in commercial farming areas. Natural foods also include animals which have been allowed to feed and move freely in healthy pastures. Compare this with what happens in the mass production of poultry: there are battery farms, for example where thousands of chickens live crowded together in one building and are fed on food which is little better than rubbish. Chickens kept in this way are not only tasteless as food, they also produce eggs which lack important vitamins.
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    It is significant that nowadays fibre is considered to be an important part of a healthy diet. In white bread, for example, the fibre has been removed. But it is present in unrefined flour and of course in vegetables. It is interesting to note that in countries where the national diet contains large quantities of unrefined flour and vegetables, certain diseases are comparatively rare. Hence, the emphasis is placed on the eating of wholemeal bread and more vegetables by modern experts on "healthy eating".
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答案 There are other aspects of healthy eating which are now receiving increasing attention from experts on diet. Take it for example, the question of sugar. This is actually a non essential food! Although a natural alternative, such as honey, can be used to sweeten food if this is necessary, we can in fact do without it. It is not that sugar is harmful in itself, but it does seem to be additive: the quantity we use has grown steadily over the last two centuries, and in Britain today each person consumes an average of 200 pounds a year! Yet all it does provide us with energy, in the form of calories. There are no vitamins in it; no minerals- and no fibre.
解析     第一段讲述在过去的十年中，越来越多的年轻人意识到需要改善自己的饮食习惯，因为他们食用的大部分食物对身体不利。因此，人们对自然食物的兴趣与日俱增。
    第二段接着讲述自然食物(natural foods)是什么，它何以称为“natural”，以及它可以包括的方面。
    最后一段讲述纤维(fibre)是当今健康膳食中的重要部分。它帮助降低某些疾病的发病率。
    题目要求补出第三自然段。根据上下文内容，该段应该描写与自然食物相关的内容。可以举例从反面角度说明一些非健康的食物，并说明这些食物为何不健康。建议最后落脚到其中“contain no fibre”上，这样和下文衔接更自然。
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