book3 Unit8课后答案.ppt

1、Section A Section B Section C,8,3,Check Yourself,1. Try to complete the sentences with what you learned from the text. 1) Carl Sagans opinion about other intelligent life in universe is . that we must have many neighbors out there somewhere 2) After the Tunguska Explosion the locals saw . that somet

2、hing bright blue streak toward the area and explode with incredible force,II. Reading Comprehension,Section ACheck Yourself,8,3,3) Matter and are, in theory, created . Antimatters, at the same time by the same event 4) Dark matter is a term referring to something that . we have no idea what it is 5)

3、 The smartest guys in the world get headaches from this question. This question refers to . what time is,Section ACheck Yourself,3,8,2. Based on what you have learned from the text, answer the following questions briefly. 1) The author mentioned in the first paragraph that “The real mystery is this:

4、 what is it about Earth that makes no one in the universe want to play with us?” Could you tell what the “one” means? Why did the author say so? Carl Sagans opinion about other intelligent life in universe is that we must have many neighbors out there somewhere.,Section ACheck Yourself,3,8,2) Could

5、you understand in the third paragraph “Matter and antimatter are, in theory, created at the same time by the same event”? Give one example to explain this theory,e.g. Every coin has two sides.事物有正反两方面. The North and South Poles are the two points at opposite ends of the earth.南极和北极是地球上相 对着的两点。,Secti

6、on ACheck Yourself,3,8,3) What is dark matter? How about dark energy?,Dark matter refers to the enormous amount of matter in the universe beyond what we can actually see. Dark energy is some type of energy which we cannot perceive directly, accompanying dark matter.,Section ACheck Yourself,3,8,4) Co

7、uld there possibly even be a “before” before the beginning of the universe?,Share your opinions.,Section ACheck Yourself,3,8,II. Vocabulary and Structure Collocation Choose the correct phrase to complete each of the following sentences with its proper form. 1) to knock down / to knock off (1) Im sor

8、ry. I _ glass _ the table and broke it. knocked the off (2) Lets _ work early and go to the football game. knock down,Section ACheck Yourself,3,8,(3) This old boxer has never _ by an opponent. been knocked down (4) The boy _ by a car. was knocked off,Section ACheck Yourself,3,8,2) fall back/fall bac

9、k into/fall back on/fall into,(1) Shes unstable and liable _ sudden fits of rage. to fall into (2) But for his sustaining presence, all things would cease to be and _ nothing. fall back into,Section ACheck Yourself,3,8,(3) They tend _ old favorites rather than risking money on new plays. to fall bac

10、k on (4) When he found his troops had been surrounded, the commander ordered all soldiers _. to fall back,Section ACheck Yourself,3,8,3) catch up/catch up on/catch up with/get caught up in,(1) Ill finally get a chance _ some sleep. to catch up on (2) I missed a lot of school, and it was really hard

11、to _. catch up,Section ACheck Yourself,3,8,(3) We _ the commercial aspects of Christmas. get caught up in 4) Amy eats a lot junk food, and one day illness will _ her. catch up with,Section ACheck Yourself,3,8,2. Word Formation Compound (复合词),Examples: Most historians agree WWII was the 20th Centurys

12、 key event(Para. 1, Passage A) WWII = World War Two Exercises: Complete the following table with the proper equivalents based on the given clues.,Section ACheck Yourself,3,8,number,e.g.,et cetera.,编号,B.A.,i.e.,等等,Master of Arts,Test of English as a Foreign Language,Ph.D.,托福考试,硕士学位,Section ACheck You

13、rself,3,8,Group 2,GSM,IOC,ISO,OPEC,WTO,EMS,IT,GPS,Section ACheck Yourself,3,8,Group 3,Chief Executive Officer,Chief Finance Officer,Central Business District,Gross Domestic Product,自动取款(出纳)机,指自己动手装电脑，做贺卡等,纯收入,打折,Section ACheck Yourself,3,8,II. Vocabulary and Structure3. Select words from what are gi

14、ven and fill in the blanks with their proper forms.,Section ACheck Yourself,3,8,In the recent comparison of Japanese and American preschool education, 91 percent of Japanese respondents chose (1) _ children with a group experience (2) _ their top three reasons for a society to have preschools.,provi

15、ding,as one of,Section ACheck Yourself,3,8,Sixty-two percent of the more individually oriented (强调个性发展的) Americans listed (3) _ as one of their top three choices. An emphasis (4) _ the importance of the group seen in Japanese early childhood education continues (5) _ elementary school education.,gro

16、up experience,on,into,Section ACheck Yourself,3,8,Like in America, there is diversity in Japanese early childhood education. Some Japanese kindergartens have (6) _, such as early musical training or potential (7) _. In large cities, some kindergartens are (8) _ universities that have elementary and

17、secondary schools.,specific aims,development,attached to,Section ACheck Yourself,3,8,Some Japanese parents believe that if their young children attend a (9) _ program, it will increase the childrens chances of eventually being admitted to top-rated (10) _ . Several more progressive programs have int

18、roduced free play as a way out for the heavy intellectualizing in some Japanese kindergartens.,university-based,schools and universities,Section ACheck Yourself,3,8,Model 1: No matter how rare intelligence is in the universe, we must have many neighbors out there somewhere. (Para. 1) 1) No matter ho

19、w _ (无论天气多冷，他们仍继续工作).,4. Study the following models, and complete the sentences by translating the Chinese given into English.,Section ACheck Yourself,cold it is, they keep on working.,3,8,2) No matter how heavily _. (不管雪下得多大，他们仍继续徒步旅行). 3) No matter how hard _ (不管那是怎样的艰巨，还是尽你的全力吧),it snowed, they k

20、ept on hiking.,it may be, just do your best.,3,8,Model 2,1) It is hard to find_ (一个很会做饭的女孩子). 2) It is hard to imagine _ (很难想象他怎么能正常工作和生活). 3) It is hard to picture_ (一百年前的生活).,Section ACheck Yourself,a girl who is good at cooking .,how he could work or live a normal life,life 100 years ago,3,8,IV.

21、Translate the following sentences into English, using the expressions in brackets.,1. 我要阻止他扩散这些谣言。(stop from) I should stop him from spreading the rumors. 2. 我们可以用替代词代替禁忌词。(substitute for) We can use a substitute for a taboo word.,Section ACheck Yourself,3,8,3.专利申请档案自该专利申请失效之日起满2年后不予保存。(cease to be)

22、 The files of the patent applications shall not be preserved after expiration of two years from the date on which the applications cease to be valid. 4.他们嘲笑他的拼写错误。(make fun of) They made fun of his spelling mistakes. 5.怎样才能算出我的税金？(figure out) How can I figure out my taxes?,Section ACheck Yourself,3,

23、8,6.不断接受条件刺激(conditioned stimulus)会导致条件反射减弱。(conditioned response) The repeated exposure to the conditioned stimulus leads to the decline of the conditioned response. 7.你知道这安眠药有副作用吗？(side effect) Do you know if the sleeping pill has its side effect?,Section ACheck Yourself,3,8,I. Reading Comprehensi

24、on2. Try to answer the questions or complete the sentences in the fewest possible words based on what you learned from the text.,1) In science, the grandest revolutions are often triggered by_. the smallest changes 2) Dark energy is a substance_. unlike any other one that pushes along the expansion

25、of the universe rather than holding it back,Section BCheck Yourself,8,3,3) What is the Copernican principle? The Copernican principle is that earth is not in a central or otherwise special position in the universe. 4) _has granted cosmologists great explanatory power. Assuming ourselves to be insign

26、ificant,Section BCheck Yourself,8,3,5) What does the cosmological principle imply? The cosmological principle implies that space is expanding, that universe is getting cooler and that it is populated by relics from its hot beginning predictions that are all borne out by observations. 6) What is the

27、phenomenon of redshift? The light from distant galaxies is redder than that of nearby galaxies.,Section BCheck Yourself,8,3,7) By measuring how much the light from a distant super star has redshifted, cosmologists can then infer_. how much smaller the universe was at the time of the explosion as com

28、pared with its size today,Section BCheck Yourself,8,3,II. Vocabulary and Structure,1. Select words from what are given and fill in the blanks in the following sentences. Change the form where necessary.,Section BCheck Yourself,galaxies developed contains measure determine concentrated shines astrono

29、mers orbiting gravity,8,3,When the Universe was young, it was nearly smooth and featureless. As it grew older and (1)_, it became organized. We know that our solar system is organized into planets (including the Earth!) (2)_ around the Sun. On a scale much larger than the solar system (about 100 mil

30、lion times larger!), stars collect themselves into (3)_. Our Sun is an average star in an average galaxy called the Milky Way. The Milky Way (4)_ about 100 billion stars. Yes, thats 100,000,000,000 stars! On still larger scales,developed,galaxies,orbiting,contains,Section BCheck Yourself,8,3,individ

31、ual galaxies are (5)_ into groups, or what (6)_ call clusters of galaxies. The cluster includes the galaxies and any material which is in the space between the galaxies. The force, or glue, that holds the cluster together is (7)_ - the mutual attraction of everything in the Universe for everything e

32、lse. The space between galaxies in clusters is filled with a hot gas. In fact, the gas is so hot (tens of millions of degrees!) that it (8)_ in X-rays instead of visible light.,concentrated,astronomers,gravity,shines,Section BCheck Yourself,8,3,In in pink) lying between the galaxies is the image abo

33、ve, the hot X-ray gas (shown superimposed on an optical picture of the cluster of galaxies. By studying the distribution and temperature of the hot gas we can (9) _ how much it is being squeezed by the force of gravity from all the material in the cluster. This allows scientists to (10) _ how much t

34、otal material (matter) there is in that part of space.,measure,determine,Section BCheck Yourself,8,3,2. Complete the sentences according to the Chinese given.,1) _(因特网是由全球数百万的) computers linked together around the world in such a way that information can be sent from any computer to any other 24 hou

35、rs a day. 2) _(我对现在的时装潮流一窍不通), which is why I dress so plainly. 3) They often create some unique sports activities and make _ _(体育与娱乐完美地融合在一起).,Section BCheck Yourself,The Internet is connected by millions of,8,3,I know nothing about the dress fashion,sport and entertainment perfectly,integrated,4)

36、_(我们可以这么说) those students who are constantly struggling with the English language will probably acquire full competence in the language. 5) It is a good way to determine the location of something _(通过测量的时间) it takes for an echo to return from it. 6) However, you might have a change of heart _(在我告诉你的

37、基础上).,Section BCheck Yourself,8,3,It can be said that,by measuring the time,on what I tell you,III. Translation,1. 他无法说明旷课的原因。(account for) He could not account for his absence from school. 2. 在冰路上骑自行车是很危险的，我们必须减慢速度。(slow down) It is dangerous to ride a bicycle along an icy road, so we have to use a

38、 brake to slow down the bicycle.,Section BCheck Yourself,8,3,3. 那些群岛长久以来就声称有许多蛇。(be populated by) Those Isles have long been claimed to be populated by plenty of snakes. 4. 它们伸展开四肢，就像会飞的松鼠一样。(stretch out) They stretch out their legs like flying squirrels.,Section BCheck Yourself,8,3,5. 这只不过是杜撰的故事而已。

39、(nothing more than) It is nothing more than a made-up story. 6. 他根据最近的发展重新审视自己的方针。(in the light of) He reviewed his policy in the light of recent developments.,Section BCheck Yourself,8,3,7. 总的来说人民是渴望和平的。(at large) The people at large want peace. 8. 德文较之法文难学。(as compared with) German, as compared with French, is difficult to learn.,Section BCheck Yourself,8,3,I. Reading Comprehension 1. What is the butterfly effect? The butterfly effect is a term used in Chaos Theory to describe how tiny variations can affect giant systems, and complex systems, like weather pattern. 2. What