Unit 1 Science and Scientists Reading and Thinking 导学案-2026-2027学年高中英语人教版选择性必修第二册

该高中英语导学案围绕“Science and Scientists”单元核心，聚焦John Snow探究霍乱病因的案例，涵盖相关短语翻译与课文理解。课堂导入通过带例句的短语翻译（如“break out”“link…to…”），结合1854年伦敦霍乱背景，搭建从词汇学习到篇章分析的支架，助力学生衔接前后知识。 资料亮点在于任务设计层层递进，通过段落匹配梳理文章结构，选择题训练细节分析与推断能力（思维品质），语法填空强化语境中的语言运用（语言能力）。整体引导学生自主探究科学案例，培养学习策略与问题解决能力，提升学科核心素养。

XB2 U1 Science and Scientists导学案 Reading and Thinking Step 1 Translate the following expressions 1. break out：________________例句：A terrible cholera outbreak broke out in London in 1854. 2. come down with：________________例句：Many people came down with cholera in the poor neighbourhood. 3. subscribe to：________________例句：Some people subscribed to the theory that bad air caused the disease. 4. be to blame：________________例句：Snow suspected that the water pump was to blame for the cholera. 5. link…to…：________________例句：John Snow linked the cholera cases to the polluted water. 6. in fear of ：________________例句：People lived in fear of the deadly disease at that time. 7. die of：________________例句：Hundreds of citizens died of cholera within a short period. 8. gather information：________________例句：Snow gathered information about the victims’ drinking water. 9. once and for all：________________例句：He wanted to defeat cholera once and for all. 10. prevent…from…：________________例句：Clean water can prevent people from getting infected. 11. transform…into…：________________例句：The new policy transformed the polluted area into a clean place. 12. a substantial decrease：________________例句：There was a substantial decrease in cholera cases later. Step 2 Skim the text and match the subheadings with the paragraphs. Para.1　　　A. John Snow’s investigation and findings Para.2　　　B. The cause and the two theories of cholera Para.3　　　C. John Snow, a famous doctor of his time Para.4　　　D. Conclusion and the influence of his discovery Step 3 Choose the best answer 1. What is the main idea of the passage? A. The introduction of the deadly disease cholera in Europe. B. How John Snow found the cause of cholera and defeated it. C. Different theories about how cholera spread among people. D. The great development of medical science in the 19th‑century London. 2. What were the two theories about cholera at that time? A. Bad food and cold weather caused cholera. B. Polluted air and polluted water caused cholera. C. Dirty environment and virus caused cholera. D. Rats and insects spread cholera quickly. 3. How did John Snow carry out his investigation? A. He did lots of experiments in his lab. B. He interviewed doctors from other countries. C. He gathered data and made a map of cholera victims. D. He studied books about ancient diseases day and night. 4. What did John Snow find out from the map? A. Most victims lived near the Broad Street water pump. B. All victims had eaten the same kind of food. C. Victims were mostly old and weak people. D. Cholera spread faster in rich neighbourhoods. 5. What measure was taken to stop the cholera? A. People were forced to stay indoors all day. B. The water pump handle was removed. C. Patients were sent to foreign hospitals. D. All drinking water was boiled before use. 6. What can we infer about John Snow? A. He believed in the theory of bad air all the time. B. He was careful, patient and devoted to scientific research. C. He solved the cholera problem with little effort. D. He made a lot of money from his discovery. 7. What is the result of John Snow’s research? A. Cholera disappeared all over the world immediately. B. People began to realize the importance of clean drinking water. C. No people suffered from any infectious diseases later. D. He became the most famous doctor in ancient history. Step 4 Rational Cloze In the mid‑19th century, London 1. ____________ (suffer) from cholera, a deadly disease. Thousands of people came down 2. ___________ cholera and died. At that time, two contradictory theories 3. ____________ (exist): one subscribed 4. __________ the idea that bad air caused cholera; the other thought people got infected from polluted water. John Snow, a well‑known doctor, wanted to find the cause once and for all. When another cholera outbreak 5. __________ (hit) London in 1854, he began his investigation. He gathered information about the victims and made a map, 6. ____________ showed where people had died. To his surprise, many deaths were linked 7. _____________ the water pump in Broad Street. He suspected the pump 8. _________ (be) to blame. Soon the handle of the pump 9. _____________ (remove). Thanks to John Snow’s great work, people understood that polluted water spread cholera. There was a substantial decrease 10. ______________ cholera cases. His discovery transformed public health for the whole world. 参考答案： Step1 Translate the following expressions 1.爆发；突然发生 2.染上（病） 3.同意；赞同 4.应承担责任；该受责备 5.把…… 和…… 联系起来 6.恐惧地；害怕地 7.死于 8.收集信息 9.彻底地；一劳永逸地 10.阻止…… 做…… 11.把…… 转变成…… 12.大幅下降 Step2 Skim the text and match the subheadings with the paragraphs. Para.1  C Para.2  B Para.3  A Para.4  D Step3 Choose the best answer 1.B 2.B 3.C 4.A 5.B 6.B 7.B Step4 Rational Cloze 1.suffered 2.with 3.existed 4.to 5.hit 6.which 7.to 8.was 9.was removed 10.in 第 1 页 共 3 页 学科网（北京）股份有限公司 $