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【单选题】

Passage Two
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 foods, is not good for the health.Consequently, there has been a growing interest in natural foods.
Natural foods, for example, are vegetable, fruit and grain which have been grown in soil that is rich in organic (有机的) matter.In terms, this means that the soil has been nourished (滋养) by unused vegetable matter, which provides it with essential vitamins (维生素) 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 quantity 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 farms.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.
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 this is necessary, we can in fact do without it.It is not that sugar is harmful in itself.But the problem is that 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 fiber.
Why do people now prefer natural foods?

A.
Because they grow fast and cost less.
B.
Because they fit people's eating habits.
C.
Because they are good to people's health.
D.
Because they are simply processed foods.
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参考答案:
举一反三

【单选题】能润肠通便,滋养补虚的药物是

A.
番泻叶
B.
火麻仁
C.
芦荟
D.
郁李仁
E.
芒硝

【多选题】滋养阴血的是?

A.
胡麻仁
B.
生地
C.
麦冬
D.
阿胶

【单选题】维生素A

A.
临床上常用于治疗新生儿出血症
B.
临床上用于防治坏血病
C.
能发生硫色素反应
D.
结构中含有β-紫罗兰酮环
E.
本身不具有生物活性,进入体内后才能发挥作用

【单选题】维生素A的特点不包括()

A.
对酸和碱稳定
B.
脂肪酸败可引起严重破坏
C.
摄入过多可引起中毒
D.
是黄素酶的辅酶成分
E.
抗氧化作用

【单选题】维生素K参与合成

A.
凝血因子Ⅷ、Ⅺ和Ⅻ
B.
凝血酶原和凝血因子Ⅶ、Ⅸ、Ⅹ
C.
血栓调节蛋白
D.
血小板
E.
凝血因子Ⅻ

【单选题】经肾脏羟化后的维生素D是

A.
麦角骨化醇
B.
胆骨化醇
C.
维生素D2
D.
25-(OH)D
E.
1,25-(OH)2D3

【单选题】维生素B2的特点不包括().

A.
在碱性环境中稳定
B.
对光敏感
C.
黄素酶类的辅酶成分
D.
在体内催化氧化-还原反应
E.
缺乏可致眼-口腔-皮肤的炎症反应
相关题目:
【单选题】能润肠通便,滋养补虚的药物是
A.
番泻叶
B.
火麻仁
C.
芦荟
D.
郁李仁
E.
芒硝
【多选题】滋养阴血的是?
A.
胡麻仁
B.
生地
C.
麦冬
D.
阿胶
【单选题】维生素A
A.
临床上常用于治疗新生儿出血症
B.
临床上用于防治坏血病
C.
能发生硫色素反应
D.
结构中含有β-紫罗兰酮环
E.
本身不具有生物活性,进入体内后才能发挥作用
【单选题】维生素A的特点不包括()
A.
对酸和碱稳定
B.
脂肪酸败可引起严重破坏
C.
摄入过多可引起中毒
D.
是黄素酶的辅酶成分
E.
抗氧化作用
【单选题】维生素K参与合成
A.
凝血因子Ⅷ、Ⅺ和Ⅻ
B.
凝血酶原和凝血因子Ⅶ、Ⅸ、Ⅹ
C.
血栓调节蛋白
D.
血小板
E.
凝血因子Ⅻ
【单选题】经肾脏羟化后的维生素D是
A.
麦角骨化醇
B.
胆骨化醇
C.
维生素D2
D.
25-(OH)D
E.
1,25-(OH)2D3
【单选题】维生素B2的特点不包括().
A.
在碱性环境中稳定
B.
对光敏感
C.
黄素酶类的辅酶成分
D.
在体内催化氧化-还原反应
E.
缺乏可致眼-口腔-皮肤的炎症反应
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