2. 外语
  3. Increasingly, over the past ten years, people—especially young people—have become aware of the need to change their eating habit

Increasingly, over the past ten years, people—especially young people—have become aware of the need to change their eating habit

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问题    Increasingly, over the past ten years, people—especially young people—have become aware of the need to change their eating habits, 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(添加剂)and which have not been affected by chemical fertilizers widely used in farming today.
   Natural foods, for example, are vegetables, fruit and grain which have been grown in soil that is rich in organic(有机的)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(牧场). Compare this with what happens in the mass production of poultry: there are 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 lay eggs which lack important vitamins.
   There are other aspects of healthy eating which are now receiving increasing attention from experts on diet. Take 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 it is necessary, we can in fact do without it. It is not that sugar is harmful in itself. But it does seem to be addictive: 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 is to provide us with energy, in the form of calories. There are no vitamins in it, no minerals and no fiber.
   It is significant that nowadays fiber is considered to be an important part of a healthy diet. In white bread, for example, the fiber 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 whole meal bread and more vegetables by modern experts on "healthy eating".
The best title for this passage is "______".
选项 A、People’ s Growing Interest in Natural Foods
B、Natural Foods and Healthy Diet
C、Harmful Effects of Sugar
D、The Importance of Fiber in Foods
答案B
解析 主旨题。这篇文章依次介绍了人们对天然食品和健康饮食的逐渐关注、有机食品的定义和类别、糖的价值、纤维的重要性以及对健康饮食的建议。由此可见，整篇文章都是围绕天然食品和健康饮食展开的。选项A(人们对天然食品不断增长的兴趣)、选项C(糖的有害影响)和选项D(食物纤维的重要性)均不够全面。选项B(天然食品和健康饮食)符合文章主题，故本题选B。
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