unit4reading

1、Unit 4Unit 4 Astronomy: Astronomy: the science of the stars the science of the stars Words and expressions: violent (adj.) 猛烈的猛烈的 (n.) violence solid (adj.) 實(shí)心的，固體的實(shí)心的，固體的 explode (vt. & vi.) 爆炸，爆發(fā)爆炸，爆發(fā) (n.) explosion in time 及時(shí)及時(shí) eventually 最終最終 carbon dioxide (CO2) 二氧化碳二氧化碳 oxygen (n.) 氧氧 nitr

2、ogen (n.) 氮氮 water vapour 水蒸氣水蒸氣 atmosphere (n.) 大氣層；氣氛大氣層；氣氛 dissolve (v.) 溶解溶解 harmful (adj.) 有害的有害的 (vt. & n.) harm multiply (v.) 繁殖繁殖 shellfish (n.) 水生有殼動(dòng)物水生有殼動(dòng)物 amphibian (n.) 兩棲動(dòng)物兩棲動(dòng)物 reptile (n.) 爬行動(dòng)物，爬蟲爬行動(dòng)物，爬蟲 mammal (n.) 哺乳動(dòng)物哺乳動(dòng)物 exist (vi.) 存在，生存存在，生存 (u.n.) existence spread (vt. &

3、 vi.) (spread, spread) 伸展，展開，傳播伸展，展開，傳播 prevent.from = stopfrom 使使不做事；阻止不做事；阻止做某事做某事 depend on 視某事物而定；取決于某事物視某事物而定；取決于某事物 eight planets（行星）（行星） many comets（彗星）（彗星） other objects （天體）（天體）The Solar SystemThe Solar System1111木星木星水星水星 火星火星 金星金星 地球地球土星土星天王星天王星 海王星海王星On which planet are there On which pla

4、net are there liveslives at presentat present( (目前目前) ) ? ?EarthEarthWhat do you know about the beginning of life? or do you know any ancient stories about it?Pangu separated the Nvwa created God created the sky from earth humans world 盤古開天盤古開天 上帝創(chuàng)世論上帝創(chuàng)世論女媧造人女媧造人 Are they true for the beginning of t

5、he life? Do you know what a scientific（科學(xué)的）（科學(xué)的） idea is? HowLIFE BEGAN ON THE EARTH?The importance of water for lifeThe formation(形成形成) of the earthThe formation of the universeThe arrival of humans and their influence(影響影響) on the earth The development of plants and animals on the earthMatch each

6、paragraph with its main idea.Para.1 para.2 para.3 para.4para.5 Task1 Fast reading universeearth waterplants and animalshumansorder(順順 序序)timepay attention to the markers(標(biāo)志詞標(biāo)志詞): first, next, after that, between.and . , .Replace the sentence:Para.1Task 2 Careful reading However, according to a well-

7、known theory, the universe started with a great explosion.However, according to a widely accepted theory, the universe began with a “Big Bang”.Para.1How did the Big Bang create the universe?First of all , it _ matter in all _.After that , _ began to _.Then, atoms _ to create _and _ .threwdirectionsa

8、tomsformcombinedstarsother bodiesPara.2 What does the wordthey refer to in the sentencesIt exploded loudly with fire and rock. They were in time to produce carbon, nitrogen, water vapour and.?A. Planets. B. Stars.C. Gases. D. Fire and rocka cloud of _ Big Banga solid slowly combinethe earth _ downit

9、 exploded loudly with _ and _waterthe earths _dustball/globefire rockatmospherecooled : The formation of earth.Para.2?Water appeared from Mars; it did not disappear from the earth.True Judge True or FalsePara.3 How did water help life develop? Water allowed the earth to _ harmful gases and acids int

10、o the oceans and seas, producing a_.dissolvechain reactionPara.3A. insects 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!

11、Para.4ECFABDG1.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）類）7.mammals(哺乳類

12、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.insects2.plants3.re

13、ptiles（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）類）7.mammals(哺乳類哺乳類)Study of the groups of life (生命的

14、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.insects2.plants3.reptiles（爬行類）（爬行類）4.shellfish（貝類）（貝類）5

15、.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 beingsPara.51.The author infers us that if we want the life to continue on the earth, what should we do?A. We should produce more carbon dioxide to cause global wa

16、rming.B. We should solve the problem of global warming as soon as possible.C. We should bear less people and think about a new way to grow more crops.D. We should be worthy of water.2. From the last paragraph we can infer that the author is_. A. confident B. sad C. concerned D. angryAre we human bei

17、ngs taking good care of our mother-the earth? What problem are these clever animals causing?greenhouse effect(溫室效溫室效應(yīng)應(yīng)) and global warmingSave the earth!As a high school student, what little things can we do for the earth? The following expressions may be helpful:1. Its our duty to save/protect 2. As we know, is very important to man.3. we should4. we should not5. In order to ride bikes or take a bus or walk to school plant treessave waterWhat can we do for