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Read the following text carefully and then write a summary based on it. Your should write about 100 words on ANSWER SHEET 2. 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 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 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. 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 nonessential 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 true that sugar has grown steadily over the last two centuries and in Britain today each person consumes an average of 200 pounds (90kg) 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'.
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【单选题】可以满足某一特定性别、年龄及生理状况群体中50%个体的需要的是( )。
A.
UL
B.
EAR
C.
RNI
D.
AI
【单选题】可以满足某一特定性别、年龄及生理状况群体中半数个体需要的摄入水平是
A.
DRIs
B.
EAR
C.
AI
D.
RNI
E.
UL
【简答题】减少、降低、减退
【判断题】人们喜欢臭豆腐的原因是因为臭豆腐的“臭”味能够保持稳定。
A.
正确
B.
错误
【单选题】氧离曲线是表示下列哪种关系的曲线
A.
血红蛋白含量与氧解离量
B.
血红蛋白氧饱和度与血红蛋白氧含量
C.
血红蛋白氧饱和度与血氧分压
D.
血红蛋白氧含量与血红蛋白氧容量
E.
血红蛋白与血红蛋白氧含量
【简答题】梳理第二章、第三章知识点。 2.熟练掌握数学模型建立、传递函数求取,梅逊公式,二阶系统的性能指标求取、稳态误差等内容,每个知识点自己找3道题,进行演练。
【简答题】()是幼儿认识世界的重要手段,也是幼儿学习的基本方法
【单选题】氧离曲线是表示下列哪种关系的曲线
A.
血红蛋白含量与氧解离量
B.
血红蛋白氧饱和度与血红蛋白氧含量
C.
血红蛋白氧饱和度与血氧分压
D.
血红蛋白氧含量与血红蛋白氧容量
【单选题】68《中华人民共和国旅游法》第四十七条规定,经营高风险旅游项目的经营者应当按国家有关规定取得经营许可。下列旅游项目中,属于高风险项目的是( )。
A.
骑自行车旅游
B.
潜水旅游
C.
. 体育旅游
D.
. 温泉旅游
【单选题】《中华人民共和国旅游法》第四十七条规定,经营高风险旅游项目的经营者应当按照国家有关规定取得经营许可。下列旅游项目中,属于高风险项目的是( )。
A.
骑自行车旅游
B.
潜水旅游
C.
登山旅游
D.
温泉旅游
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