Unit 3 单元话题阅读理解练习-2023-2024学年高二英语选择性必修第二册单元重难点易错题精练（人教版2019）

Unit 3 Food and Culture 单元话题阅读理解练习 （2023秋·江苏镇江·高二江苏省镇江中学校考阶段练习）Sugar-free cookies, sugar-free candy, and diet soda—are these better for you? After sugar became a no-no in the nutrition and wellness world, sugar-free food and drinks acted as a replacement for once beloved sweet drinks and snacks. Being claimed to be ZERO sugar means the food and drinks are healthier, better for diabetics, and help you slim down ... Right? Wrong. Sugar-free products aren’t better for you. In fact, they are worse. For most sugar-free products, it means that artificial sweeteners (甜味剂) are used instead of real sugar. The problem is that these sweeteners do not come from natural soures and they can do you more harm than good.     Let’s get into what these artificial sweeteners actually are. Sugar-free sugar sounds wrong because there is no such thing as sugar-free sugar. Some of these sugar-free alternatives even contain sugar and the ones that have chemicals your body often does not know how to process. Most artificial sweeteners are a lot sweeter than sugar so only a small quantity of them are needed. That’s why they can market sugar-free alternatives as “low-calorie” or “no-calorie’. It also means that you get no nutritional value from consuming them, which is why so many sugar-free replacements are classified as “non-nutritive”. These artificial sweeteners tend to hide under some names. Actually, they are 200-600 times sweeter than sugar.     When you eat sweet stuff, your body continues to desire it and, even though your body cannot metabolize (代谢) these sugar-free alternatives, your brain does not know the difference. In turn sugar-free alternatives relate to weight gain and Type-2 diabetes. Besides, artificial sweeteners also damage your gut’s ability to break down sugar which impacts everything you eat. In other words, your body doesn’t know how to handle artificial sweeteners because they have nothing real to process.     Here is a good rule of thumb: stay away from artificial