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Many Americans harbour a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head o
Many Americans harbour a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head o
admin
2019-06-20
30
问题
Many Americans harbour a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of the department of food science and nutrition at the University of Massachusetts Amherst, says bluntly that if the dangers from bacterially contaminated chicken were as great as some people believe. "The streets would be littered with people lying here and there.
Though the public increasingly demands no-risk food, there is no such thing. Bruce Ames, chairman of the biochemistry department at the University of California, Berkeley, points out that up to 10% of a plant’s weight is made up of natural pesticides. Says he: "Since plants do not have jaws or teeth to protect themselves, they employ chemical warfare. " And many naturally produced chemicals, though occurring in tiny amounts, prove in laboratory tests to be strong carcinogens—a substance which can cause cancer. Mushrooms might be banned if they were judged by the same standards that apply to food additives. Declares Christina Stark, a nutritionist at Cornell University-. "We’ve got fat worse natural chemicals in the food supply than anything man-made. "
Yet the issues are not that simple. While Americans have no reason to be terrified to sit down at the dinner table, they have every reason to demand significant improvements in food and water safety. They unconsciously and unwillingly take in too much of too many dangerous chemicals. If food already contains natural carcinogens, it does not make much sense to add dozens of new manmade ones. Though most people will withstand the small amounts of contaminants generally found in food and water, at least a few individuals will probably get cancer one day because of what they eat and drink.
To make good food and water supplies even better, the Government needs to tighten its regulatory standards, stiffen its inspection program and strengthen its enforcement policies. The food industry should modify some long-accepted practices or turn to less hazardous alternatives. Perhaps most important, consumers will have to do a better job of learning how to handle and cook food properly. The problems that need to be tackled exist all along the food-supply chain, from fields to processing plants to kitchens.
The author considers it impossible to obtain no-risk food because______.
选项
A、no food is free from pollution in the environment
B、pesticides are widely used in agriculture
C、many vegetables contain dangerous natural chemicals
D、almost all foods have additives
答案
C
解析
事实细节题。第二段第一句直接说明绝对安全的食品是不存在的,紧接着解释原因。文章提到natural pesticides(天然杀虫剂)是植物自身产生的用以自我保护的武器。这些物质经实验室检验发现可以致癌。由此可见,植物本身就能产生致癌物质,这是食品无法绝对安全的原因。[C]项是对这一原因的同义复述,故为答案。同时可知文中的pesticides不是指人类用于农产品的杀虫剂,故排除[B]项。[A]项没有提及,故排除。addictives只在第二段倒数第二句中说到蘑菇时提及,并非所有食物都有,[D]项是对原文的过度推断,故排除。
转载请注明原文地址:https://kaotiyun.com/show/uRra777K
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