高中英语北师大版版选修7课件：Unit+21+Section+Ⅲ+Lesson+2+&+Lesson+3+—+Pre-reading

[原文呈现]
In the 1330's, the epidemic returned, this time in Asia.It spread rapidly and became known as “The ○ Black Death” as one symptom was black spots on the body ○ . The conditions in much of Asia and Europe — war, crowded○ cities and ○ ○ a lack of basic health routines — provided the perfect conditions for the disease to spread worldwide. In urban ○ areas all over Europe, Asia, Africa and the Middle East, up to one half of the population was lost to the Black Death.
Section Ⅲ
Lesson 2 & Lesson 3 — Pre­reading
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Epidemics throughout history With 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.
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①press/pres/n.新闻界；报界 ②parallel/'pærəlel/n.极相似 之处；平行线 ③epidemic/ˌepI 'demIk/n.流 行病 ④look through看穿；审核， 浏览
[原文呈现] Since Bird Flu first appeared in 1997, it has taken more than a hundred ⑤ lives . 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
to discover the causes and effects ⑫throughout of epidemics, and hopefully,
over history foresee⑭ and prevent them in ⑬causes and effects因果 ⑭foresee/fɔː'siː/vt.预见 the future.
[原文呈现] [读文清障] Bacteria and viruses have ⑩as long as在本句中意为 been around since the beginning “和……一样长”。还可作 of life on Earth and many of 连词用，表示“只要”，引 today's diseases have existed as 导条件状语从句。
of the same virus⑨.
[读文清障] ⑤take one's life夺走某人的生命 ⑥tissue/'tI ʃuː/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/ˌæ dæ p'teI ʃ 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。
long as⑩ humans have. It is ⑪it用作形式主语，代替不定 important to look at⑪ the spread 式短语to look at ...。look at of diseases throughout history⑫
⑬
此处表示“回顾”。 history＝all
自从地球上有了生命，便有了细菌和病毒。当今的 很多疾病存在的时间和人类历史一样长。我们有必要回 顾一下历史上疾病的传播情况，从而弄清楚传染病的起 因和后果，并且希望将来能够预防它们的发生。
[原文呈现] One of the earliest epidemics on record⑮ happened about 500 － 550 AD when the Roman emperor at the time was attempting ⑯ to rebuild ⑰ the Roman Empire.This epidemic swept through ⑱ North Africa, the Middle East and Europe. Scientists now guess that up to ⑲ 50% of the area's population died from this epidemic ⑳making it one of the main causes of the fall of the Roman Empire○.
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。 自从禽流感在1997年首次出现，它已经夺去一百多人的 生命。许多人担心它会成为下一个全球性的传染病，特别是 在一些科学家研究了死于1918年西班牙流感的人的尸体组织 后，证明了禽流感是同一种病毒的现代变异体。
21
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⑮on record正式记录的，公开发 表的 ⑯attempt to do试图做 make an attempt to do sth./at doing sth.试图做某事 ⑰rebuild/ˌriː'bIld/vt.重建 ⑱sweep through席卷；顺利通过 ⑲up to达到(数量、程度等)； 至多 ⑳making it one of the main causes ...是现在分词短语作结 果状语。 21 empire/'empaI ə/n.帝国 ○