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.
四级写作考前预测——广告
四级考前秘押作文:大学里的生活
通过《新概念英语》第三册拿四级写作高分
四级考前秘押作文:写给校长的信
四级考前秘押作文:度假方式情况变化
四级考前秘押作文:给老师打分
冲刺推荐:四级名师考前答疑
英语四级考试作文点评
四级考前秘押作文:圈养宠物
写作考前预测——留学申请信
四级写作预测:对校园恋爱的看法
考试作文点评
四级考前秘押作文:写给朋友的信
四级考试议论文写作方法简析
大学英语四级写作多种表达方法解析
写作考前预测——职业生涯
四级写作预测:媒体购物
四级写作考前预测——道歉信
写作常见的强调手法
英语四级考试作文点评——点点版
四级写作中最易犯的典型语言错误
四级考前秘押作文:和谐宿舍生活
考试作文范文——北京
四级考试作文范文——江涛版
四级考前秘押作文:城市交通问题
四级写作预测:学生给老师打分
四级写作考前预测——收入差距
四级写作考前预测——感谢信
名师:写作冲刺必背10篇范文
写作考前预测——考研人数
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |