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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

admin2010-02-17  59
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 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 greater number of written material advancing such claims make it difficult for the general public to sep arate 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 surrounded 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 crops grown with organic fertilizers are nutritionally superior to chose with chemical fertilizers, 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 ff consumers, particularly those with limited incomes, distrust the regular food supply and buy only expensive organic foods instead.
The author implies that there is cause for concern if consumers with limit ed incomes buy organic foods instead of conventionally grown foods be cause ______ .
选项 A、organic goods can be more expensive but are often no better than conventionally grown foods
B、many organic foods are actually less nutritious than similar conventionally grown foods
C、conventionally grown foods are more readily available than organic foods
D、too many farmers will stop using conventional methods to grow food crops
答案A
解析 参见文章最后一段。文中指出，有机食品的共性即价格比传统食品的价格高。但很多情况下，如果消费者相信有机食品能保持健康，比传统食品更有营养，那是受误导了。因此选项A有机食品价高，但往往并不比传统食品好，与文中观点相符。选项B、C、D文中无根据。
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