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.) 实心的，固体的实心的，固体的 explode (vt. & vi.) 爆炸，爆发爆炸，爆发 (n.) explosion in time 及时及时 eventually 最终最终 carbon dioxide (CO2) 二氧化碳二氧化碳 oxygen (n.) 氧氧 nitr

2、ogen (n.) 氮氮 water vapour 水蒸气水蒸气 atmosphere (n.) 大气层；气氛大气层；气氛 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.) 水生有壳动物水生有壳动物 amphibian (n.) 两栖动物两栖动物 reptile (n.) 爬行动物，爬虫爬行动物，爬虫 mammal (n.) 哺乳动物哺乳动物 exist (vi.) 存在，生存存在，生存 (u.n.) existence spread (vt. &

3、 vi.) (spread, spread) 伸展，展开，传播伸展，展开，传播 prevent.from = stopfrom 使使不做事；阻止不做事；阻止做某事做某事 depend on 视某事物而定；取决于某事物视某事物而定；取决于某事物 eight planets（行星）（行星） many comets（彗星）（彗星） other objects （天体）（天体）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 盘古开天盘古开天 上帝创世论上帝创世论女娲造人女娲造人 Are they true for the beginning of t

5、he life? Do you know what a scientific（科学的）（科学的） 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(影响影响) 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(顺顺 序序)timepay attention to the markers(标志词标志词): 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（爬行类）（爬行类）4.shellfish（贝类）（贝类）5.fish6.amphibians（两栖（两栖类）类）7.mammals(哺乳类哺乳类) Study of the groups of life (生命的种类生命的种类/物种物种) Look at the pictures and tell the groups .1.insects2.plants3.reptiles（爬行类）（爬行类）4.shellfish（贝类）（贝类）5.fish6.amphibians（两栖（两栖类）类）7.mammals(哺乳类

12、哺乳类)Study of the groups of life (生命的种类生命的种类/物种物种)Look at the pictures and tell the groups .1.insects2.plants3.reptiles（爬行类）（爬行类）4.shellfish（贝类）（贝类）5.fish6.amphibians（两栖（两栖类）类）7.mammals(哺乳类哺乳类)Study of the groups of life (生命的种类生命的种类/物种物种)Look at the pictures and tell the groups .1.insects2.plants3.re

13、ptiles（爬行类）（爬行类）4.shellfish（贝类）（贝类）5.fish6.amphibians（两栖（两栖类）类）7.mammals(哺乳类哺乳类)Study of the groups of life (生命的种类生命的种类/物种物种)Look at the pictures and tell the groups .1.insects2.plants3.reptiles（爬行类）（爬行类）4.shellfish（贝类）（贝类）5.fish6.amphibians（两栖（两栖类）类）7.mammals(哺乳类哺乳类)Study of the groups of life (生命的

14、种类生命的种类/物种物种)Look at the pictures and tell the groups .1.insects2.plants3.reptiles（爬行类）（爬行类）4.shellfish（贝类）（贝类）5.fish6.amphibians（两栖（两栖类）类）7.mammals(哺乳类哺乳类)Study of the groups of life (生命的种类生命的种类/物种物种)Look at the pictures and tell the groups .1.insects2.plants3.reptiles（爬行类）（爬行类）4.shellfish（贝类）（贝类）5

15、.fish6.amphibians（两栖（两栖类）类）7.mammals(哺乳类哺乳类)Study of the groups of life (生命的种类生命的种类/物种物种)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(温室效温室效应应) 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