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1、How life began on the earth Pangu _the sky from the earth.盤古開天辟地盤古開天辟地Saying 1separated女媧補(bǔ)天女媧補(bǔ)天 Nuwa mended the heaven and _human beings.Saying 2created God _the world in seven days.Saying 3createdThe development of Human from_.Saying 4monkey Life was brought to the earth by ET from _space. Saying 5
2、outer1. What does the text tell us?qHow the earth come into beingqThe problem of the earth caused by human beingqHow the human being build the earthqHow the life developed on the earthTask1 Fast readingRead the passage quickly and find out the answers to the questions below.Task1 skimming 2.How did
3、the universe begin according to a widely accepted theory?The universe began with a Big Bang. Task1 Fast readingTask1 skimming Whats the main idea for each Para?Para.1Para.2Para.3Para.4Para.5A theory about how the universe began The arrival of humans and their impact(影響)(影響) on the earthThe importanc
4、e of water for lifeThe development of plants and animals on the earthThe formation(形成形成) of atmosphereand water on earthTask2 careful readingTo be honest, none of us knows how the earth began because it happened too long ago.True Judge True or FalsePara.1Task3 Careful reading Para.1How did the Big B
5、ang create the universe?First of all , it _ matter in all _.After that , _ began to _.Then, atoms _ to create _and _ .threwdirectionsatomsformcombinedstarsother bodiesPara.21. What is the original earths atmosphere made up of?carbon, nitrogen, water vapour, and other gasesThe origin of life on the e
6、arth is an interesting question. It was a widely accepted _ that the universe began with a “Big Bang”, after which the earth was _. Between 4.5 and 3.8 billion years ago it settled into a solid _. The earth was very_ and exploded loudly with fire and rock. they were in time to produce carbon, nitrog
7、en, water vapor and other gases, which were to make the earths _. Then as the earth cooled down, water appeared. theorya cloud of dustglobeviolentatmosphereFill in the blanks:Para.21. What makes the earth different from the other planets in the solar system? A. It produced a lot of heat. B. C. Water
8、 disappeared. D. It was the oldest planet.The continued presence of waterPara.32. How did water help life develop?Water allowed the earth to _ harmful gases and acids into the oceans and seas, producing a_.dissolvechain reactionPara.31.insects2.plants3.reptiles(爬行類)(爬行類)4.shellfish(貝類)(貝類)5.fish6.am
9、phibians(兩棲類)(兩棲類)7.mammals(哺乳類哺乳類)Look at the pictures and tell the groups .Para.41.insects2.plants3.reptiles(爬行類)(爬行類)4.shellfish(貝類)(貝類)5.fish6.amphibians(兩棲(兩棲類)類)7.mammals(哺乳類哺乳類) Study of the groups of life Look at the pictures and tell the groups .1.insects2.plants3.reptiles(爬行類)(爬行類)4.shellf
10、ish(貝類)(貝類)5.fish6.amphibians(兩棲(兩棲類)類)7.mammals(哺乳類哺乳類)Study of the groups of life (生命的種類生命的種類/物種物種)Look at the pictures and tell the groups .1.insects2.plants3.reptiles(爬行類)(爬行類)4.shellfish(貝類)(貝類)5.fish6.amphibians(兩棲(兩棲類)類)7.mammals(哺乳類哺乳類)Study of the groups of life (生命的種類生命的種類/物種物種)Look at the
11、 pictures and tell the groups .1.insects2.plants3.reptiles(爬行類)(爬行類)4.shellfish(貝類)(貝類)5.fish6.amphibians(兩棲(兩棲類)類)7.mammals(哺乳類哺乳類)Study of the groups of life (生命的種類生命的種類/物種物種)Look at the pictures and tell the groups .1.insects2.plants3.reptiles(爬行類)(爬行類)4.shellfish(貝類)(貝類)5.fish6.amphibians(兩棲(兩棲類
12、)類)7.mammals(哺乳類哺乳類)Study of the groups of life (生命的種類生命的種類/物種物種)Look at the pictures and tell the groups .1.insects2.plants3.reptiles(爬行類)(爬行類)4.shellfish(貝類)(貝類)5.fish6.amphibians(兩棲(兩棲類)類)7.mammals(哺乳類哺乳類)Study of the groups of life (生命的種類生命的種類/物種物種)Look at the pictures and tell the groups .1.ins
13、ects2.plants3.reptiles(爬行類)(爬行類)4.shellfish(貝類)(貝類)5.fish6.amphibians(兩棲(兩棲類)類)7.mammals(哺乳類哺乳類)Study of the groups of life (生命的種類生命的種類/物種物種)Look at the pictures and tell the groups .Human beingsUse the sentence in the text to describe the picture:They are putting toomuch carbon dioxideinto the atmo
14、sphere,which prevents heat from escaping from the earth into space.Para.5greenhouse effectThe earth may become too hot to live on . Finally about_ million years ago somesmall_ animals_, but they put lots of carbon into the atmosphere, _ heat escaping from the earth into space. As a result of it, lif
15、e on earth is i_d_. appearedpreventingn angercleverSummaryPara.52.6Group competition 1 2 5 4 3 6How the earth came outa cloud of _ Big Banga solid _slowly combinethe earth _ downit exploded loudly with _ and _waterthe earths _Filling exercise(Para.1-2)(6)dustball/globefire rockatmospherecooledHow li
16、fe began on the earthwater 1. 2. 10. 3. 4. insects (on land)5. 6. 7._8. dinosaurs (on land)9._ 11._ small _ in water_ and all sorts of fishgreen plants on land _(on land and in water)forests (on land) (on land)small clever animals with _Filling exercise(Para.4)(7)plantsshellfishamphibiansreptilesmam
17、malshands and feethuman beingsQuestions:1)How did water come into being on the earth?(Para.2)(2)2) The explosion of the earth produced water vapour, which turned into water when the earth cooled down.It allowed the earth to dissolve harmful gases into oceans and seas.Translation It was not immediate
18、ly obvious that water was to be fundamental to the development of life.(4)水會(huì)對(duì)生命的發(fā)展起關(guān)鍵作用,這一水會(huì)對(duì)生命的發(fā)展起關(guān)鍵作用,這一點(diǎn)在當(dāng)時(shí)并不明顯。點(diǎn)在當(dāng)時(shí)并不明顯。In some films and stories, we can see dinosaurs and people together. Is it right? Why?(Para.4)(4)Because dinosaurs died out long before human beings developed on the earth.A. i
19、nsects and amphibians appear B. reptiles appearC. shellfish and other fish appear D. dinosaurs appear E. small plants grow on the water F. plants begin to grow on landG. Mammals (including humans) appear Put them in a correct order!Para.4ECFABDG(4) Homework1.Retell the development of life.2.Review t
20、he new words and expressions in this unit.use the vocabulary from the reading passage to replace the underlined parts 1. However, according to a well-known theory, the universe started with a great explosion. However, according to a widely accepted theory, the universe began with a “Big Bang”.2. The
21、 Big Bang threw matter in every direction.The Big Bang threw matter in all directions. 3.They were finally to produce carbon, nitrogen, water vapour and other gases. They were in time to produce carbon, nitrogen, water vapour and other gases. 4. It was not immediately obvious that water was to be ba
22、sic to the development of life fundamental 5. The extremely small plants spread and made the oceans and seas filled with oxygen.The extremely small plants multiplied and filled the oceans and seas with oxygen. 6.Why they suddenly died out still remains a puzzle? Why they suddenly disappeared/extinct
23、ed still remains a mystery. 7.This disappearance made possible the appearance of mammals on the earth. rise 8. Therefore, its their turn to become the most important animals on the planet. Thus , in their turn, they become the To live on the earth may become too hot. The earth may become too hot to
24、live on.fill in the blank with proper wh-,or that. 1.(_ it was to become )was uncertain until between4.5 and 3.8 billion years ago ( _ the dust settled into a solid globe).whatwhen 2.The earth became so violent that it was not clear (_ the shape of being a solid globe would last or not). 3. They were in time to produce carbon, nitrogen, water vapour and other gases, (_ were to make the earths atmosphere
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