高中英语 Unit 21 Human Biology Section Ⅲ Lesson 2 Lesson 3—Pre-reading学案（含解析）北师大版选修7-北师大版高二选修7英语学案

Section Ⅲ Lesson 2 Lesson 3—Pre-reading[原文呈现]Epidemics throughout historyWith recent press① reports drawing parallels② between Bird Flu and a killer epidemic③ in the past, Jim Smith looks through④ the history of epidemics for clues about what the future might hold.Since Bird Flu first appeared in 1997, it has taken more than a hundred lives⑤. Many people fear it could be the next global epidemic, especially as scientists who studied tissue⑥ from the bodies of people who died of⑦ the 1918 Spanish Flu proved that Bird Flu is a modern adaptation⑧ of the same virus⑨.Bacteria and viruses have been around since the beginning of life on Earth and many of today's diseases have existed as long as⑩ humans have. It is important to look at ⑪ the spread of diseases throughout history⑫ to discover the causes and effects⑬ of epidemics, and hopefully, foresee⑭ and prevent them in the future.[读文清障]①press/pres/n.新闻界；报界②parallel/'pær lel/ən.极相似之处；平行线③epidemic/ epI'demIk/ˌn.流行病④look through 看穿；审核，浏览⑤take one's life 夺走某人的生命⑥tissue/'tI u /ʃ ː n.组织⑦die of 死于(饥饿、寒冷、疾病等身体内部因素)die from 死于(车祸、地震、战争等外界因素)⑧adaptation/ ædæp'teIˌʃn/n.变化；变种⑨as ...是 as 引导的时间状语从句，从句中含有两个 who 引导的定语从句，先行词分别是 scientists 和 people, that ...是 that 引导的宾语从句。⑩as long as 在本句中意为“和……一样长”。还可作连词用，表示“只要”，引导条件状语从句。⑪it 用作形式主语，代替不定式短语 to look at ...。look at 此处表示“回顾”。⑫throughout history＝all over history⑬causes and effects 因果⑭foresee/f'si /ɔːː vt.预见历史上的传染病病例[第 1～3 段译文] 随着近期的媒体报道将禽流感与过去的一种致命传染病画上等号，吉姆·史密斯回顾了传染病的历史以寻找关于将来可能发生的情况的线索。自从禽流...