时文阅读01 How much salt is too much（课件）（话题阅读精练）英语高二通用版

该高中英语课件系统梳理了“盐的健康影响”主题的核心内容，涵盖盐的双重生理作用、过量摄入风险、推荐摄入量及减盐策略，通过语篇结构分析（Problem-Solution模式）、核心词汇聚焦与长难句解析，结合读写训练，帮助学生构建“知识理解-技能应用”的完整网络。 其亮点在于以核心素养为导向，设计“语篇研读-习题诊断-写作输出”分层复习路径，如概括大意题培养思维品质，写作提纲与要点引导语言能力提升，拓展练习兼顾基础词汇与应用表达，既满足个性化学习需求，又为教师提供精准复习教学支持，有效巩固语篇理解与语言运用能力。

How much salt is too much? 多少盐算多？ 高二时文阅读 1 01 语篇导读 02 走进语篇 03 牛刀小试 04 拓展练习 05 拓展阅读 Content 目录 Content 目录 2 语篇导读 01 3 8d6dce4a064c559482bc231079c8ec0e.MP4 4 走进语篇 02 5 ①We have a complicated relationship with salt. Our bodies require a small amount of salt to function, but most of us far exceed our daily recommended intake. Regularly consuming too much salt can lead to hypertension, or high blood pressure . ② For most healthy adults, the World Health Organization recommends eating no more than two grams of sodium a day, and the American Heart Association (AHA) recommends a hard sodium cap of 2.3 grams a day, equivalent to a teaspoon of salt. The daily average sodium intake of Americans currently sits at 3.4 grams. Worldwide, that number is 4.3 grams, sustained by countries in East and Central Asia, which are well-known for their rich cuisines. 6 ③ When it comes to blood pressure, no scientist disputes the downsides of an unreasonable salt intake. Long-term overconsumption of salt can spell kidney failure, heart disease, and stroke. In other parts of the body, a salt-hooked lifestyle can increase the chances of stomach ulcers and cancer. Moreover, some studies claim that salt pulls calcium from the bone and can lead to osteoporosis, though the effect has not been observed unilaterally across different groups of people. 7 ④ Salty food can be particularly hard to limit because our bodies are wired to desire it. Salt is essential for health. Insufficient dietary salt can lead to muscle cramps, and more serious conditions like insulin resistance and atherosclerosis, a condition of arterial constriction that’s a precursor to stroke. Too little salt can also be fatal, but today it’s rare—only 2 percent of people in the U.S. are at risk of under consuming salt. People need a moderate amount of salt to maintain the balance of their bodies. 8 ⑤ According to medical guidelines, the minimum daily sodium intake is 0.5 grams per day. Salt sensitivity, which is how much an individual’s blood pressure jumps in response to a quantity of salt, also differs from person to person. Scientists observed that salt influences cellular metabolism and can rouse immune cells to ward off pathogens in the body. 9 ⑥ Only a tiny portion of our daily sodium originates from added salt during everyday cooking; the rest—over 70 percent—we derive from ultra-processed foods. Salt functions as a preservative, alters food structure, keeps moisture in meats, and acts as a stabilizer in processed foods. 10 ⑦Given the overabundance of salt in grocery items, and that 48 percent of American adults experience hypertension, there’s a good chance that people stand to benefit from limitating salt intake, even slightly. Reducing salt intake as a national guideline is also a safe bet for the population to achieve a healthier lifestyle. 11 ⑧ Plus, with our car-dependent, relatively inactive lifestyles, the average American is at greater risk at overconsumption of sodium than underconsumption, says Raeeda Gheewala, a nephrologist and founder of the clinic Sports Nephrology. When it comes to the recommended 2.3-gram sodium limit, “I don't think it's too tough in this country,” she adds. Eating at home is the easiest way to control how much salt goes in our food. To that end, “grocery shopping is the most important part of the process,” Gheewala says. She advises her patients to plan all their meals for the week in advance to ensure their homes are lacking of salty snacks. 12 While- reading 语篇阅读 语篇类型 Expository Text (说明文) 语篇内容 本文探讨了盐在身体机能中的重要作用、过量摄入的健康风险、推荐的每日摄入量以及减少摄入的策略。 语篇结构模式 Problem-Solution Structure 各部分大意 Part 1 Introduction to salt’s dual role Part 2（段落2-4） Risks of Excessive Salt Part 3（段落5-6） Sources of Hidden Salt Part 4（段落7-8） Strategies for Reduction 牛刀小试 03 14 ( )1.What is the main purpose of the article? A. To criticize the food industry for adding too much salt. B. To explain the health risks of excessive salt consumption and suggest solutions. C. To compare salt intake guidelines between the WHO and the AHA. D. To prove that salt sensitivity varies among individuals. 概括大意题 ACD选项均是对细节的描述，B选项概括了全文大意，过量的摄入盐分会对人体健康造成威胁。 ① We have a complicated relationship with salt. Our bodies require a small amount of salt to function, but most of us far exceed our daily recommended intake. Regularly consuming too much salt can lead to hypertension, or high blood pressure . B. To explain the health risks of excessive salt consumption and suggest solutions. B 15 ⑥However, Steven Barnett, the co-director of the National Institute for Early Education Research at Rutgers University, believes this trend predates the pandemic. “It’s a long time coming,” he says, suggesting the pandemic may have accelerated an existing issue. ( )2.What does the article say about insufficient salt intake? A. It is a widespread problem globally. B. It can cause muscle cramps and insulin resistance. C. Over 50% of Americans are at risk of it. D. It is more dangerous than overconsumption. ④ Insufficient dietary salt can lead to muscle cramps, and more serious conditions like insulin resistance and atherosclerosis, a condition of arterial constriction that’s a precursor to stroke. Too little salt can also be fatal, but today it’s rare—only 2 percent of people in the U.S. are at risk of under consuming salt. People need a moderate amount of salt to maintain the balance of their bodies. B. It can cause muscle cramps and insulin resistance. B 细节推断 A选项与原文意思相反。C选项数据与文中数据不一致。D选项未提及。 16 ⑧Kids’ preferences for toys have shifted as well, says Hornbeck. Magnetic building blocks, which can be combined easily, have replaced puzzles and wooden blocks, which require patience and precision. And in three of the four classrooms Hornbeck observed, not a single child attempted into the reading area during a three-hour duration. ( )3.According to the article, where do most people get their daily sodium? A. From salt added during home cooking. B. From natural sodium in vegetables. C. From ultra-processed foods. D. From restaurant meals. ⑥ Only a tiny portion of our daily sodium originates from added salt during everyday cooking; the rest—over 70 percent—we derive from ultra-processed foods. Salt functions as a preservative, alters food structure, keeps moisture in meats, and acts as a stabilizer in processed foods. 细节理解题 选项A 第一句话提到only a tiny.B选项是未提及的。D选项也未提及。A属于错误描述，CD属于看似正确但文中未提及。 C. From ultra-processed foods. C 17 ⑧Kids’ preferences for toys have shifted as well, says Hornbeck. Magnetic building blocks, which can be combined easily, have replaced puzzles and wooden blocks, which require patience and precision. And in three of the four classrooms Hornbeck observed, not a single child attempted into the reading area during a three-hour duration. ( )4.What does Dr. Gheewala suggest to control salt intake? A. Avoiding all processed foods immediately. B. Planning weekly meals before grocery shopping. C. Increasing physical activity to balance sodium. D. Taking medication to reduce blood pressure. C. The key is ensuring children enjoy the process. B 细节理解 同意词转换，like doing 以及stick with it 与选项中enjoy the process 呼应。 ⑥Whatever you choose to do, make sure that the routine is something that your child is on board with. If they like doing it, they’ll be more likely to stick with it. Then keep talking about what they’re doing. “Listen carefully to show them you care—about gratitude and them,” Hussong says. “Because in the end, gratitude is meant to connect us, and when parents connect with their child, gratitude is sure to follow.” 18 拓展练习 04 19 intake /ˈɪnteɪk/ recommend /ˌrekəˈmend/ function /ˈfʌŋkʃən/ consumption /kənˈsʌmpʃən/ maintain /meɪnˈteɪn/ limit /ˈlɪmɪt/ 词汇聚焦 n. 摄入量 v. 建议；推荐 v. 运作；起作用 n. 消耗 v. 维持；保持 n.&v. 限制；限量 20 1.为了保持健康，控制每日糖分摄入量非常重要。 2.根据专家的建议，青少年应保证每天8小时睡眠。（recommendation，健康生活方式） 翻译句子 To stay healthy, it’s important to control your daily sugar intake. According to experts’ recommendations, teenagers should ensure 8 hours of sleep every day. 21 3.充足的睡眠有助于大脑正常运作，从而提高学习效率。（健康生活方式） 翻译句子 Enough sleep helps the brain function properly, thus improving study efficiency. 4.学校鼓励学生减少一次性塑料制品的使用，以降低环境污染。（reduce the consumption of，环保主题） The school encourages students to reduce the consumption of single-use plastics to lower environmental pollution. 22 翻译句子 5.保持均衡饮食是维持身体健康的关键因素之一。（健康生活方式） 6.为了保护视力，医生建议将每天使用电子设备的时间限制在两小时以内。 （limit...to...，健康生活方式） To protect eyesight, doctors suggest limiting daily screen time to two hours.   Maintaining a balanced diet is one of the key factors to keep physical health. 23 Reducing salt intake as a national guideline is also a safe bet for the population to achieve a healthier lifestyle. 将减少盐摄入作为国家健康指南，也是确保民众实现更健康生活方式的安全策略。 长难句分析 宾语 动名词短语作主语 非谓语to do作目的状语 方式状语 作为… 写作训练 假设你是校学生会主席李华，你校将开展“健康饮食周”活动。请你以学生会的名义写一封英文倡议书，呼吁同学们减少食用高盐零食，并说明理由与建议。 内容要点包括： 1.说明高盐零食的危害； 2.提出健康饮食的建议； 注意： 1.词数100左右； 2.可适当增加细节，使行文连贯； 写作思路： 开头段：简要介绍活动目的，直接点明倡议内容（减少高盐零食）。 中间段：说明高盐零食的危害（健康问题），并提出替代建议（健康零食选择）。 结尾段：鼓励参与活动，呼吁行动。 写作提纲 开头段 简要介绍活动目的，直接点明倡议内容（减少高盐零食）。 中间段 说明高盐零食的危害（健康问题），并提出替代建议（健康零食选择）。 结尾段 鼓励参与活动，呼吁行动。 写作思路： 开头段：简要介绍活动目的，直接点明倡议内容（减少高盐零食）。 中间段：说明高盐零食的危害（健康问题），并提出替代建议（健康零食选择）。 结尾段：鼓写作要点： 危害（高盐零食）： 增加高血压风险（increase the risk of high blood pressure） 损害肾脏（harm the kidneys） 导致肥胖和心血管疾病（lead to obesity and heart disease） 建议（健康替代方案）： 选择新鲜水果、坚果或酸奶（choose fresh fruits, nuts, or yogurt） 多喝水，少吃加工食品（drink more water, avoid processed foods） 阅读食品标签（check nutrition labels） 鼓励参与： 参加健康饮食讲座或烹饪课（join nutrition talks or cooking classes） 养成长期健康习惯（develop long-term healthy habits） 励参与活动，呼吁行动。 写作要点 危害（高盐零食）： 建议（健康替代方案）： 鼓励参与： 增加高血压风险（increase the risk of high blood pressure） 损害肾脏（harm the kidneys） 导致肥胖和心血管疾病（lead to obesity and heart disease） 选择新鲜水果、坚果或酸奶（choose fresh fruits, nuts, or yogurt） 多喝水，少吃加工食品（drink more water, avoid processed foods） 阅读食品标签（check nutrition labels） 参加健康饮食讲座或烹饪课（join nutrition talks or cooking classes） 养成长期健康习惯（develop long-term healthy habits） Dear fellow students, Our school will soon hold a "Healthy Eating Week" to help everyone develop better eating habits. We encourage you to eat fewer high-salt snacks like chips and instant noodles, as too much salt can lead to health problems such as high blood pressure and heart disease. These snacks may taste good, but they are harmful to our bodies in the long run. Instead of salty snacks, try healthier choices like fresh fruits, unsalted nuts, or yogurt. Drinking more water and checking food labels for salt content are also good habits. Small changes in our daily diet can greatly improve our health. Join us during this special week for fun activities like cooking classes and health talks. Let's work together to build healthy habits that will last a lifetime! Students' Union 参考范文 Students' Union Dear fellow students, Our school will soon hold a "Healthy Eating Week" to help everyone develop better eating habits. We encourage you to eat fewer high-salt snacks like chips and instant noodles, as too much salt can lead to health problems such as high blood pressure and heart disease. These snacks may taste good, but they are harmful to our bodies in the long run. Instead of salty snacks, try healthier choices like fresh fruits, unsalted nuts, or yogurt. Drinking more water and checking food labels for salt content are also good habits. Small changes in our daily diet can greatly improve our health. Join us during this special week for fun activities like cooking classes and health talks. Let's work together to build healthy habits that will last a lifetime! 拓展阅读 05 29 Smart Salt Habits: Easy Tips for a Healthier You Salt is important for our body, but too much can harm our health. Here’s how to use salt wisely: Use Less Salt: Experts suggest eating no more than 1 teaspoon of salt daily (about 5 grams). Check food labels, as snacks, canned soups, and sauces often contain hidden salt. Try New Flavors: Use herbs, spices (such as garlic powder or pepper), lemon juice, or vinegar to make food tasty instead of adding extra salt. Cook with Care: Add a little salt at the end of cooking—it will taste stronger, so you’ll need less. Always use a spoon to measure salt, not just pouring from the packet. Wash Canned Foods: Rinse canned beans, vegetables, or fish with water to remove some salt before eating. Choose Healthy Options: Pick “low-sodium” products when shopping. At restaurants, ask for less salt in your meal. Snack Smartly: Eat fresh fruits, nuts, or yogurt instead of salty chips or cookies. Your taste buds can adjust to less salt in about 4–6 weeks. Start small—replace one salty snack a day with something fresh. Cooking meals at home with natural ingredients is the easiest way to control salt. Remember, small changes today can keep your heart healthy tomorrow! 明智的用盐习惯：轻松小贴士助您更健康 盐对我们的身体很重要，但摄入过多会损害健康。以下是如何明智用盐的方法： 少吃盐：专家建议每天盐的摄入量不超过 1 茶匙（约 5 克）。查看食品标签，因为零食、罐装汤和酱料中往往含有隐形盐。 尝试新口味：用香草、香料（例如蒜粉或胡椒粉）、柠檬汁或醋来让食物美味，而不是添加额外的盐。 烹饪需谨慎：在烹饪结束时加一点盐——这时盐味会更浓，所以用量会更少。量盐时一定要用勺子，不要直接从盐包里倒。 冲洗罐头食品：食用罐装豆类、蔬菜或鱼之前，用清水冲洗一下以去除部分盐分。 选择健康食品：购物时挑选“低钠”产品。在餐馆用餐时，要求少放盐。 明智地吃零食：选择新鲜水果、坚果或酸奶，而非咸味薯片或饼干。 33 Lavf59.14.100 $$