2020高考英语大二轮复习冲刺经典专题语篇部分专题一阅读理解第3讲主旨大意类课件.ppt

Weight loss can be a struggle for anyone, but it is especially hard for diabetics ( 糖尿病患者 ). A study looked at how the starch from unripe bananas affected the weight of a group of obese diabetics. After four weeks of a diet high in bananas, diabetics lost significantly more weight than on a control diet. They also saw improvements in insulin sensitivity from the banana diet. What's more, bananas have been shown to cut risks of strokes, diabetes and cancers (Bananas are the most powerful fruit for lowering the risk of kidney cancer.). Bananas are also a rich source of fiber, which has been shown to help weight loss. Bananas that still have some green on the skin are even higher in fiber. Skins from green bananas can be taken and, after removing the stem and dark tip, cut into small pieces 2 － 3 inches long and 1/2 inch wide. These pieces can be made into a tea or added to a dish. When you eat the skins, be sure you are eating organic bananas. The flesh of regular bananas is low in pesticides, but the skins are not. 篇章导读： 本文是一篇说明文。文章反驳了 “ 吃香蕉会使人发胖 ” 这一 错误观点， 告诉大家香蕉不会使身体分泌很多胰岛素而导致脂肪增加， 相反， 香蕉对身体健康有着诸多好处。 5 ． What conclusion can we draw from Paragraphs 1 & 2? A ． Bananas are likely to make people fat. B ． Insulin determines the amount of sugar. C ． Low － GI foods can turn into sugar more slowly. D ． The faster the food becomes sugar, the less insulin. 答案： C 推理判断题。根据第二段中的 “ How can you know if food makes a lot of sugar quickly? The glycemic index ( 血糖指数 ) ... faster sugar development. Bananas have a GI of 62, which is considered low. ” 可知，血糖指 数高的食物往往能更快地转化成糖分，反之，血糖指数低的食物转化成糖分 的速度较慢。故选 C 。 6 ． What does the author say about bananas? A ． Including bananas in diets is good for health. B ． Bananas can cure people suffering kidney cancer. C ． Eating organic bananas protect people from strokes. D ． Bananas' abundant fiber improves insulin sensitivity. 答案： A