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  3. In the years following the 1977 Dietary Goals and the 1982 National Academy of Sciences report on diet and cancer, the food indu

In the years following the 1977 Dietary Goals and the 1982 National Academy of Sciences report on diet and cancer, the food indu

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问题     In the years following the 1977 Dietary Goals and the 1982 National Academy of Sciences report on diet and cancer, the food industry, armed with its regulatory absolution, set about reengineering thousands of popular food products to contain more of the nutrients that science and government had deemed the good ones and fewer of the bad. A golden age for food science dawned. Hyphens sprouted like dandelions in the supermarket aisles: low fat, no cholesterol, high fiber. Ingredients labels on formerly two or three ingredient foods such as mayonnaise and bread and yogurt ballooned with lengthy lists of new additives—what in a more benighted age would have been called adulterants. The Year of Eating Oat Bran—also known as 1988—served as a kind of coming out party for the food scientists, who succeeded in getting the material into nearly every processed food sold in America. Oat bran’s moment on the dietary stage didn’t last long, but the pattern now was set, and every few years since then, a new oat bran has taken its star turn under the marketing lights.
    You would not think that common food animals could themselves be refigured to fit nutritionist fashion, but in fact some of them could be, and were, in response to the 1977 and 1982 dietary guidelines as animal scientists figured out how to breed leaner pigs and select for leaner beef. With widespread lip phobia taking hold of the human population, countless cattle lost their marbling and lean pork was repositioned as "the new white meat"—tasteless and tough as running shoes, perhaps, but now even a pork chop could compete with chicken as a way for eaters to "reduce saturated fat intake". In the years since then, egg producers figured out a clever way to redeem even the disreputable egg: By feeding flaxseed to hens, they could elevate levels of omega-3 fatty acids in the yolks.
    Aiming to do the same thing for pork and beef fat, the animal scientists are now at work genetically engineering omega-3 fatty acids into pigs and persuading cattle to lunch on flaxseed in the hope of introducing the blessed fish fat where it had never gone before into hot dogs and hamburgers.
    But these whole foods are the exceptions. The typical whole food has much more trouble competing under the rules of nutritionist, if only because something like a banana or an avocado can’t quite as readily change its nutritional stripes. To date, at least, they can’t put oat bran in a banana or omega-3s in a peach. Depending on the reigning nutritional orthodoxy, the avocado might either be a high-fat food to be assiduously avoided or a food high in monounsaturated fat to be embraced. The fate and supermarket sales of each whole food rise and fall with every change in the nutritional weather while the processed foods simply get reformulated and differently supplemented. That’s why when the Atkins diet storm hit the food industry in 2003, bread and pasta got a quick redesign while poor unreconstructed potatoes and carrots were left out in the carbohydrate cold.
    A handful of lucky whole foods have recently gotten the "good nutrient" marketing treatment: The antioxidants in the pomegranate now protect against cancer and erectile dysfunction, apparently, and the omega-3 fatty acids in the (formerly just fattening) walnut ward off heart disease. A whole subcategory of nutritional science—funded by industry and, according to one recent analysis, remarkably reliable in its ability to find a health benefit in whatever food it has been commissioned to study—has sprung up to give a nutritionist sheen (and FDA-approved health claim) to all sorts of foods, including some not ordinarily thought of as healthy. The Mars Corporation recently endowed a chair in chocolate science at the University of California at Davis, where research on the antioxidant properties of cacao is making breakthroughs, so it shouldn’t be long before we see chocolate bars bearing FDA-approved health claims. Fortunately for everyone playing this game, scientists can find an antioxidant in just about any plant-based food they choose to study.
    Yet as a general rule it’s a whole lot easier to slap a health claim on a box of sugary cereal than on a raw potato or a carrot, with the perverse result that the most healthful foods in the supermarket sit there quietly in the produce section, silent as stroke victims, while a few aisles over in Cereal the Cocoa Puffs and Lucky Charms are screaming their newfound "whole-grain goodness" to the rafters.
According to the passage, hyphens sprouted in the supermarket aisles because
选项 A、a golden age for food science came.
B、the good food standard was set by science and government.
C、food industry tried hard to produce healthy food.
D、the more ingredients the food contained, the more healthy it was.
答案B
解析 推断题。由原文第一段第一句“…the food industry…．set about reengineering thousands of popular food products to contain more of the nutrients that science and government had deemed the good ones and fewer of the bad．”可知，食品工业在食品加工时加入很多成分的原因是科学界和政府认为食品中成分越多越好。而根据后文可知食品的成分是使用连字符表示的。由此可知，连字符在超市中突然涌现的根本原因是科学界和政府的导向作用，因此答案为[B]。[A]“食品科学的黄金时代来临”也是科学界和政府的导向作用的一个结果，不符合题意，因此排除。[C]“食品行业试图生产健康的食品”，原文并没有暗含此意，排除。[D]“食品中所含营养成分越多，该食品就越健康”，原文并没有这样的说法，排除。
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