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课件网) 主题语境:人与社会———医学进展，疾病与健康 UNIT 4 Fit for life———健康生活 大观念之单元话题:本单元的主题语境是“人与社会”,话题为“生命健康及医学等领域”,让学生了解生物医学领域的创新研究和发展,认识现代医学对人类健康的影响,除此以外,还要了解针灸的作用、特点以及对医学的贡献,培养学生对生命科学的热爱,重视近视问题,培养传播和弘扬中华优秀传统文化的意识,坚定文化自信。 ①allergic / l d k/ adj.过敏的 ②radiation / re di e n/ n.辐射 ③sample / sɑ mp( )l/ n.样品 ④transform /tr ns f m/ vt.& vi.转换 ⑤be exposed to暴露于 类文悦读·情境导学 “救命针”到了太空竟变“毒针” 加拿大一群学生实验发现惊人结果。 Student scientists study EpiPens in space A school science project by a group of students in Canada has led to an important discovery:EpiPens,which help control severe allergic① reactions,might not work in space. An EpiPen is a shot that puts a medicine called “epinephrine (肾上腺素)” straight into a person’s body with a needle.Epinephrine calms the allergic reaction so the person can breathe. But students in the Program for Gifted Learners had a question about EpiPens:Would they work in space They knew that on Earth,radiation② from the sun can change the molecules (分子) of the epinephrine in an EpiPen.They wondered if the same thing would happen when epinephrine was exposed to⑤ radiation in space.So they designed an experiment to test their idea.They wanted to send samples③ of the liquid in an EpiPen,as well as pure epinephrine,into space to see if anything changed. Working with a group called iEDU,which offers a program called Cubes in Space,the students sent two cubes into space—one on a rocket and the other on a balloon.Each cube held a small bottle of pure epinephrine and a small bottle of EpiPen liquid. After the cubes returned to Earth,the students tested the liquids in the bottles once more.The results suggested that they had discovered something big.The bottles that held the EpiPen liquid now had no epinephrine at all.The results from the bottles of pure epinephrine were even more surprising.Only 87％ of the liquid was still epinephrine.The other 13％ had transformed④ into poisonous chemicals. The discovery the students made is a big deal.It suggests that EpiPens might not work in space,and might even become dangerous. That’s important information for astronauts with allergies.It is hoped that the experiment will be repeated a second time to check the results. 文本整体理解 内 容 索 引 语篇助解释疑 课时测评作业 Section Ⅰ Welcome to the unit & Reading 文 本 整 体 理 解 Step One:Pre-reading According to the title and the pictures,can you guess what the passage mainly talks about According to the title, this passage mainly talks about the future direction of gene development. Step Two:While-reading Ⅰ.Read for the main idea 1.What’s the main idea of the passage A.The problems of genom ... ...
