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  3. Are organically grown foods the best food choices? The advantages claimed for such foods over conventionally grown and marketed

Are organically grown foods the best food choices? The advantages claimed for such foods over conventionally grown and marketed

admin2010-04-30  49
问题     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 from the basis for folklore.
    Almost daily the public is besieged by claims for "no aging" diets, new vitamins, and other wonder foods. These 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 a real cause for concern if consumers, particularly those with limited incomes, distrust the regular food supply and buy only expensive organic foods instead.
According to the last paragraph, consumers who believe that organic foods are better than conventionally grown foods are often ______.
选项 A、careless
B、mistaken
C、thrifty
D、wealthy
答案B
解析 细节定位题。最后一段第2句话是：But in many cases consumers are misled if they believe organic foods can maintain health and provide better nutritional quality than conventionally grown foods. 意思是；许多情况下，如果消费者认为有机肥食物比传统培育的食物更有利于健康，营养价值更高的话，他们一定是被误导了。所以，B“有错误认识的”正确。在此misled的意思就是被别人所误导，而有了错误的认识。
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