The food we eat seems to have profound effects on our health. Although science has made enormous steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well, especially cancer of the colon. Different cultures are more prone to contract certain illnesses because of the food that is characteristic in these cultures. That food is related to illness is not a new discovery. In 1945, government researchers realized that nitrates and nitrites, commonly used to preserve color in meats, and other food additives, caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things in the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and poultry, and because of this, penicillin has been found in the milk of treated cows. Sometimes similar drugs are administered to animals not for medicinal purposes, but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration has tried repeatedly to control these procedures, the practices continue.
高中英语重点:分词的用法和常见的考点
将来进行时的用法
初中英语used to与be used to的用法区别
小升初语法必备 since的用法及练习题
初中语法瞬间动词与延续性动词练习题
英语语法总结 be going to用法小结
延续性动词与瞬间动词的转换
小升初语法必备:现在分词的用法
英语中省to 的动词不定式用法
英语中不定式作状语的用法
小学英语语法:不定式作补语的用法
小学英语必备:分词作状语
小学英语中不定式作主语的用法
小升初语法必备 be going to 结构用法总结
小学英语独立主格的结构
小升初语法必备:介词to 的用法
英语中分词作插入语的用法
初中英语独立主格结构的用法及理解
小升初英语:It's for sb.和 It's of sb.的用法
英语中Since 和 for 的用法
小升初必备语法 let的用法
高中英语分词作状语的用法
动词不定式to+do 的用法
英语中不定式的时态和语态
英语中过去分词作状语的用法
瞬间动词和延续性动词的含义及用法
初中英语Be going to练习题
be used to 和 use to do和use doing 用法详解
小学英语中动词不定式的否定式
英语中常用的时间状语
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