2. 外语
  3. Imagine eating everything delicious your want--with none of the fat. That would be great, wouldn’t it? New "fake fat" produc

Imagine eating everything delicious your want--with none of the fat. That would be great, wouldn’t it? New "fake fat" produc

admin2009-06-15  68
问题 Imagine eating everything delicious your want--with none of the fat. That would be great, wouldn’t it?
    New "fake fat" products appeared on store shelves in the United States recently, but not everyone is happy about it. Makers of the products, which contain a compound called olestra, say food manufacturers can now eliminate fat from certain foods. Critics, however, say the new compound can rob the body of essential vitamins and nutrients(营养物) and can also cause unpleasant side effects in some people. So it’s up to consumers to decide whether the new fatfree products taste good enough to keep eating.
   Chemists discovered olestra in the late 1960s, when they were searching for a fat that could be digested by infants more easily. Instead of finding the desired fat, the researchers created a fat the can’t be digested at all.
   Normally, special chemicals in the intestines(肠) "grab" molecules of regular fat and break them down so they can be used by the body. A molecule of regular fat is made up of three molecules of substances called fatty acids.
   The fatty acids are absorbed by the intestines and bring with them the essential vitamins A, D, E, and K. When fat molecules are present in the intestines with any of those vitamins, the vitamins attach to the molecules and are carried into the bloodstream.
   Olestra, which is made from six to eight molecules of fatty acids, is too large for the intestines to absorb. It just slides through the intestines without being broken down. Manufacturers say it’s that ability to slide unchanged through the intestines that makes olestra so valuable as a fat substitute. It provides consumers with the taste of regular fat without any bad effects on the body. But critics say olestra can prevent vitamins A, D, E, and K from being absorbed.  It can also prevent the absorption of carotenoids(类胡萝卜素), compounds that may reduce the risk of cancer, heart disease, etc.
   Manufacturers are adding vitamins A, D, E, and K as well as carotenoids to their products now. Even so, some nutritionists are still concerned that people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming.
选项 A、Right
B、Wrong
C、Not mentioned
答案A
解析 句意：Olestra是一种不含食品脂肪但仍保持美味的物质。根据文章第二段，生产含Olestra的食品的厂商认为Olestra能除掉某些食品中的脂肪，而第六段又指出Olestra能保持脂肪的美味而对身体无害。可知题意与文中观点一致，故选A。
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