三年真题研读专练三模前任务型阅读专题练13题组一About Nutritional Supplementation(补充)Today, we know that the role of vitamins and minerals goes way beyond the prevention of deficiency diseases(维生素缺乏症)to actually preventing cancer and heart disease, the most fearsome killers of our time. With this knowledge has come the widespread call for nutritional supplementationand a confusing group of vitamin, mineral, and supplements lining the supermarket shelves.Far from contributing to better health, however, nutritional supplements threaten to turn a scientific breakthrough into a nutritional disaster.Promoters of vitamins and mineralsespecially Vitamins A, C, and Ewould have consumers believe that the little vitamin pill in the bottle is all they need for good health. Take your vitamins in the morning, and youre covered. Its okay to eat fast foods for the rest of the day or skip meals to achieve todays fashionably skinny look. But vitamins and minerals are only one part of the nutritional puzzle. A diet rich in fiber(纤维)and balanced in carbohydrates and protein is essential for good health. You cant get these things from a nutritional supplement. The focus on vitamin and mineral supplements may actually be robbing us of the full nutrition we seek.And no supplement can compare to the quality of nutrition found in natural sources. For example, our bodies turn carotenes(胡萝卜素)from plant foods into Vitamin A. Many supplements contain a single carotene, but natural sources are rich in many different carotenes. Many supplements contain a form of Vitamin E that is made from chemicals, when natural Vitamin E is more readily absorbed and used by the body. And science is still discovering the wealth of nutrients in foods.But perhaps the greatest danger presented by nutritional supplements comes from the very real risks presented by self medication. Anyone can walk into the market and buy as many different supplements as desired. The reported benefits of high dosages of certain nutrients have led some people to believe that the more the better. Many take several vitamin and mineral supplements without regard to possible consequences.A surprising new research suggests that Vitamin C pills may speed up hardening of the arteries, the underlying cause of heart attacks. Researchers said their findings support the recommendations of health organizations, which urge people to avoid high doses of supplements and to get their nutrients from food instead.As appealing as theyre made to sound, nutritional supplements are danger in disguise. If youre looking for good health, dont look on the supplement shelves of your supermarket. Look in the produce section instead.About Nutritional SupplementationIntroductionVitamins and minerals can prevent cancer and heart disease, which is outside the (71) of preventing deficiency diseases, so they are (72) widely, but actually nutritional supplements never contributes to better health (73) a nutritional disaster.Wrong understanding(74) your vitamins every morning, you are covered.The (75) people take nutritional supplements, the better their health is.Proper understandingVitamins and minerals are only one part of the nutrition and cant (76) a diet rich in fiber and balanced in carbohydrates and protein.Supplement cant be (77) than the quality of nutrition found in natural sources.Get the nutrients from food (78) than from high doses of supplements. (79) In order to be (80) , look in the produce section in the supermarket.文章的标题：About Nutritional Supplementation(关于营养补充)栏目有四块：79题为信息概括题。注意：根据右栏可以试填出79题的答案：Suggestion/Advice；73题提醒我们注意：这里有可能是：neverbut的对等结构；75题提醒我们注意：这里有可能是：the+比较级the+比较级的句型；77题提醒我们注意：这里要用相关词的比较级；78题提醒我们注意：这里有可能是：与than有关的短语。结合表格给出的框架浏览全文,我们可以快速得出短文的大体内容：众所周知,维生素和矿物质对人体非常有益,但我们应从食物中获取这些物质而不是仅仅依靠营养品。本文是一篇说明文。接着浏览全文,把握文章脉络；对照表格,迅速定位,比照阅读,斟酌答案：71.【答案】limit【解析】信息转换题。根据第一段第一句可知,维生素和矿物质的作用已经超出维生素缺乏症的预防,实际上它们可以起到防止癌症和心脏病的功效。beyond与outside the limit of同义。72.【答案】demanded/needed【解析】信息转换题。根据第一段第二句可知,人们对人体营养的补充品的需求非常广泛。has come the widespread call for nutritional supplementation与they are demanded/needed widely同义。73.【答案】but【解析】信息概括题。根据第二段内容可知,营养补充并非对健康有益,而是成为营养之患。never.but.意为“绝非而是”。74.【答案】Taking【解析】信息概括题。根据第三段第二句可知,每天清晨吃一点维生素就可以恢复精力。分析句子结构可知,此处应填非谓语动词。因动作的逻辑主语与句子主语一致,故填Taking。75.【答案】more【解析】信息转换题。根据第五段倒数第二句可知,被报道的高剂量的营养素的益处使得一些人相信营养品吃得越多越好。根据原句中的more填写。76.【答案】replace【解析】信息转换题。根据第三段第四、五句可知,维生素和矿物质只是人体所需营养的一部分。富含纤维和碳水化合物及蛋白质均衡的食品才是健康之本。换句话说,维生素和矿物质不能取代富含纤维和碳水化合物及蛋白质均衡的食品,故填入replace一词。77.【答案】better【解析】信息转换题。根据第四段第一句可知,任何营养品都不能与源于大自然的营养的质量相媲美,即营养品不可能比源于大自然的营养的质量好,故填入better一词。78.【答案】rather【解析】信息转换题。根据第六段第二句可知,人们要避免大量摄入营养品,而是要从食物中得到营养。换句话说,人们要从食物中得到营养,而不要大量摄入营养品,根据句意中的“而不要”和表格中than提示可知,应填入rather一词。rather than意为“而不是”。79.【答案】Suggestion/Advice【解析】信息概括题。根据右栏内容可知,这里提及的是建议。80.【答案】healthy【解析】信息转换题。根据第七段第二句中的“If youre looking for good healt