Increasingly, over the past ten years, peopleespecially young people –have become awar

Increasingly, over the past ten years, people--- especially young people –have bee aware of the need to change their eating habits, because much of the food they eat, especially processed food(加工过的食品), is not good for the health. As a result, 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(化肥), 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 matter. In simple words, this means that the soil has been nourished(给…营养) by unused vegetable matter, which provides it with vitamins and minerals. This in itself is a natural process pared 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 mercial farming area.
Natural foods also include animals which have been allowed to feed move freely in healthy pastures(牧场). Compare this with what happens in the mass production of poultry(家禽)：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.
There are other sides of healthy eating which are now receiving increasing attention from experts on diet. Take, for example, the question of sugar. This is actually unnecessary food. 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 provide us with energy, in the form of calories. There are no vitamins in it, no minerals, and no fibre.
【小题1】People have bee more interested in natural foods because    .A．they want to keep healthyB．they want to taste all kinds of foodsC．natural foods are more delicious than processed foodsD．they want to return to nature【小题2】Chickens raised in poultry farms are all of the following EXCEPT that     .A．they are fed on food which is little better than garbageB．they live in very crowded conditionC．the eggs they produce lack vitaminsD．they are allowed to move about and eat freely【小题3】According to the passage,     .A．people can only find sugar to give them energyB．sugar is bad for the healthC．the use of sugar is habit formingD．sugar only sweetens food, but provides us with nothing usefulA