The Organic Foods
Are organically grown foods the best food choices?The advantages claimed for such foods over conventionally grown and marketed food products are now being debated. Advocates of organic foods -- a term whose meaning varies greatly -- frequently proclaim that such products are safer and more nutritious than others. The growing interest of consumers in the safety and nutritional quality of the typical North American diet is a welcome development. However, much of this interest has been sparked by sweeping claims that the food supply is unsafe or inadequate in meeting nutritional needs. Although most of these claims are not supported by scientific evidence, the preponderance of written material advancing such claims makes it difficult for the general public to separate fact from fiction. As a result, claims that eating a diet consisting entirely of organically grown foods prevents or cures disease or provides other benefits to health have become widely publicized and form the basis for folklore. Almost daily the public is besieged by claims for no-aging diets, new vitamins and other wonder foods. There are numerous unsubstantiated reports that natural vitamins are superior to synthetic ones, that fertilized eggs are nutritionally superior to unfertilized eggs, that untreated grains are better than fumigated grains and the like. One thing that most organically grown food products seem to have in common is that they cost more than conventionally grown foods. But in many cases consumers are misled if they believe organic foods can maintain health and provide better nutritional quality than conventionally grown foods. So there is real cause for concern if consumers particularly those with limited incomes, distrust the regular food supply and buy only expensive organic foods instead.
2006年北京市海淀区初中毕业考试英语试卷答案
中考英语情态动词:各省历年真题实例祥解
2007年中考英语单选预测题集锦(二)
备战中考:英语单项选择之经典真题演练
中考英语阅读理解:读者与作者
中考英语词汇训练4(上)
北京市海淀区2003年中考英语试题
2007年中考英语单选预测题集锦(一)
2005英语中考试卷答案
2006年北京中考英语试卷及答案
中考英语阅读测试(二)
2001年河北省初中英语升学统一考试
2007中考英语总复习:单项选择200道
2006年中考英语最后测验模拟试题(一)
中考英语词汇训练4(下)
2006年中考英语最后测验模拟试题(二)
历年初中英语补全对话点拨
2006年北京市海淀区初中毕业考试英语试卷
中考英语阅读理解:欧洲的天气
中考英语阅读理解:艺术家与乞丐
中考英语阅读理解:带着房车旅行
2001年北京市东城区初中升学统一考试试题
中考英语阅读理解:电视与收音机对儿童的影响
北京市朝阳区2004英语
北京市初中英语毕业
中考英语阅读理解:在非洲度假
中考英语阅读理解汇总
2001福州市英语试题
2001年哈尔滨市初中升学英语试题
北京朝阳区2004英语中考试卷
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |