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1、2022年12月英语六级阅读备考技巧及词汇(九)Lesson936. We learn from the passage that olestra is a substance that_.A) contains plenty of nutrientsB) renders foods calorie-free while retaining their vitaminsC) makes foods easily digestibleD) makes foods fat-free while keeping them delicious37.The result of the search fo
2、r an easily digestible fat turned out to be_.A) commercially uselessB) just as anticipatedC) somewhat controversialD) quite unexpected38.Olestra is different from ordinary fats in that_.A) it passes through the intestines without being absorbedB) it facilitates the absorption of vitamins by the body
3、C) it helps reduce the incidence of heart diseaseD) it prevents excessive intake of vitamins39.What is a possible negative effect of olesira according to some critics?A) It may impair the digestive system.B) It may affect the overall fat intake.C) It may increase the risk of cancer.D) It may spoil t
4、he consumers appetite.40.Why are nutritionists concerned about adding vitamins to olesira?A) It may lead to the over-consumption of vitamins.B) People may be induced to eat more than is necessary.C) The function of the intestines may be weakened. 跨段D) It may trigger a new wave of fake food productio
5、n.Imagine eating everything delicious you want - with none of the fat. That would be great, wouldnt 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 manufa
6、cturers can now eliminate fat from certain foods. Critics, however, say the new compound can rob the body of essential vitamins and nutrients (养分物) and can also cause unpleasant side effects in some people. So its up to decide whether the new fat-free products taste good enough to keep eating.注：elim
7、inate消退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 that cant be digested at all.Normally, special chemicals in the intestines (肠)“grab” molecules of
8、regular fat and break them down so they can be used by the body. A molecule of regular fat is made up of three molecule 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 int
9、estines 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 s
10、ay its 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 prev
11、ent 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.本文来源：网络收集与整理，如有侵权，请联系作者删除，谢谢！第3页 共3页第 3 页 共 3 页第 3 页 共 3 页第 3 页 共 3 页第 3 页 共 3 页第 3 页 共 3 页第 3 页 共 3 页第 3 页 共 3 页第 3 页 共 3 页第 3 页 共 3 页第 3 页 共 3 页
