1、必修4Unit 4 Astronomy: the science of the stars第一部分：基础练习I词汇1选词填空并用适当的形式：develop, prevent, surface, disappoint, explode, float, force, publish, solid, spread, violent, astronomy 1. In the last five years the city has _ out rapidly in all directions.2. That he failed the college entrance examination _ h
2、is parents very much.3. They the canoe out into the middle of the river.4. The famous writer _ a lot of popular novels in that _ firm.5. The _ of gravity makes things fall to the earth.6. The robber kicked the door _ and broke into the old mans house.7. Nothing can separate the two, because they hav
3、e a _ friendship foundation.8. During World War II, two atomic bombs _ in Japan, killing a large number of people.9. With the _ of our countrys economy, peoples living standard has been greatly raised.10. More than 70% of the earths _ is covered by water.2词组识记1依靠；取决于 2. think of as3既然，由于 4. study th
4、e subject scientifically5摔跤 6. the beginning of life7向某人解释某事 8. make it possible for life to develop9随着时间的推移 10. prevent sb. from doing sth11盼望 12. the only natural satellite of the earth13导致 14. rise slowly into the air15屏住呼吸 16. make notes17作一次太空之旅 18. know much about sth19爆发 20. get the hang of i
5、t.II语法1用适当的连词填空：1. They lost their way in the forest and _ made matters worst was _ night began to fall.2. _has helped to save the drowning girl is worth praising.3. It is said _Peter will have a chance to travel abroad next month.4. _Yang Liwei ate his food in space is _ we want to know.5. _ he los
6、t the bike worried him a lot.6. I read about it in some book or other, does it matter _it was.7. _ of you answers the question correctly will be given a prize.8. _ he didnt come yesterday is unknown.9. _we will go tomorrow hasnt been decided yet.10. _ will be sent to help them is very important.2. 根
7、据中文提示翻译下列句子：1._（太空旅行所需的）is careful preparations.2. It will soon be announced _（谁获得第一名）. 3._（杨利伟从太空中安 然着陆地球）made all Chinese exited and cheerful.4. It is still unknown _（他什么时候入党的）. 5._（宇航员在太空中如何吃 饭、睡觉和行走）is very strange and interesting.6._（地球与其它行星在哪方面不同）is what are most interested in. 7. It remains a
8、 secret _（他为什么突然变卦）.8._(何时战争才会从世上消失) is hard to say.9. (最令人满意的是)_was that they finished the work in time.10.（怎样提高我们的学习成绩）_ is what we are most concerned about. III单项填空1. Once fighting _ between the two villages and many people were killed.A. broke out B. was broken out C. had broken out D. had been
9、broken out2. The Olympics are to be held in Beijing in 2008, _ has become a great encouragement to all Chinese. A. where B. that C. which D. that3. The moment the cat heard the mice _ noises, it rushed out _ the door.A. make, from B. making, behind C. make, from behind D. making, from behind4. -How
10、far apart do they live?-_ I know, they live in the same neighbourhood.A. As long as B. As far as C. As well as D. As soon as5. It was a matter of _ would take the position. A. who B. whoever C. whom D. whomever6. Why not seize it _ youve got such a good chance? A. now that B. that C. where D. which7
11、. His parents were _at the _ news that he failed the exam again. A. disappointed, disappointing B. disappointed, disappointed C. disappointing, disappointing D. disappointing, disappointed8. _ he grew older, he lost interest in everything except gardening. A. When B. As C. While D. Until9. The other
12、 day, my brother drove his car down the street at _ I thought was a dangerous speed. A. as B. which C. what D. that10. The result of the experiment was very good, _ we hadnt expected. A. when B. what C. which D. as11. _ the books where they were _. A. Lay, laying B. Lie, lying C. Lay, lying D. Lie,
13、laying12. He _ at once when I promised to help him. A. cheered up B. gave up C. lighted up D. turned up 13. The audience clapped their hands _ to the music. A. in time B. on time C. at time D. behind time14. There is a man _ himself Mr Li waiting for you. A. called B. calls C. calling D. call15. He
14、_ his eyes from his desk and then _ from his seat. A. rose, raised B. rose, rose C. raised, raised D. raised, rose第二部分：综合练习I完形填空There was in Washington a policeman who was known as the man who arrested the president. The_1_ took place when the man was a green officer_2_ at No. 1 Street. One evening,
15、 President Grant , who had been invited to a party of friends, was_3_ home to meet the engagement. The _4_ , with its four horses, was running down the street so fast that the new policeman _5_ the driver to stop . The driver _6_ him and asked what was the _7_. Dont you know you are driving about ni
16、ne times as fast as the law _8_?” said the officer. “Yes,” answered the president. “ I suppose I was , _9_ you speak of it.” “Well, then, you may _10_yourself under arrest and go with me to the station house.” There were some marks from the other _11_of the carriage _12_ whom was a foreign minister,
17、 but the president said, “The man is _13_ right.” and asked the policeman to _14_himself behind him. _15_ the policeman heard a soft voice, “ I only thought you _16_ know that its President .” The officer was very _17_ and begged them to let him go, _18_ the president would have none of it. When the
18、y reached the station, the captain turned _19_. Apologies were made, but the president _20_on paying the proper fine.1. A. accident B incident C. account D. affair2. A stood B stationed C kept watch D defending3 .A walking B wandering C running D hurrying4. A. car B bus C carriage D train 5. A begge
19、d B hoped C ordered D suggested6. A agreed B accepted C listened D obeyed7.A matter B thing C affair D business8. A lets B forbids C tells D allows 9. A though B unless C while D since 10. A decide B guess C consider D treat 11.A passengers B drivers C officers D policemen 12.A with B among C in D e
20、xcept13.A. rather B hardly C rarely D perfectly14.A to seat B to sit C to stand D to climb15.A Fortunately B Happily C Suddenly D Carefully16.A could B must C ought to D may17 A excited B interested C moved D astonished18.A therefore B but C and D otherwise 19.A. white B green C red D yellow20.A dem
21、anded B asked C required D insistedII阅读理解ADamage to Ozone layer Gets Worse In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer. The warning is: The suns summertime rays are m
22、ore dangerous than once thought. A team of scientists from 80 nations recently reported to the United Nations that a layer of ozone (臭氧层) in the atmosphere, which protects humans from harmful levels of ultraviolet（紫外线） radiation, will be thinner over the United States this summer. The thinner layer
23、allows more ultraviolet rays from the sun to reach Earth. The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer. Scientists first became concerned about the ozone layer in the mid-1980s when a hole was discovered in the layer above Antarctica during
24、the winter. The hole was caused by chemicals used in refrigerators and air conditioners. When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone. Concern about the protective ozone layer rose more recently when data(数据) from satellites and ground stations sho
25、wed that ozone levels were dropping over areas other than Antarctica. Low ozone levels were recorded in the spring and summer over the United States and over other populated areas in the world. Although many countries have already begun stopping the use of ozone destroying chemicals, the new finding
26、s are expected to advance the timetable for a total ban(禁止) of the chemicals.1. The scientists have observed the ozone layer_.A. since 1980 B. since last winter C for about 20 years D. for about one year2. The ozone layer in the atmosphere can _.A. do a lot of good to human beings in many ways.B. pr
27、otect humans from diseases caused by bad weather.C. do a lot of harm to human beings in the summer-time.D. protect humans from harmful levels of ultraviolet radiation.3. Scientists first found that there was a hole in the ozone layer_.A. above Arctic during the winter in the mid-1980sB. above Antarc
28、tica during the winter in the mid-1980sC. over somewhere in the north of the equator in 1980D. over the U.S.A in the summertime in the mid-1980s4. The damage to the ozone layer was caused by_.A. the changeable weatherB. ozone-destroying chemicalsC. chemicals from refrigeratorsD. chemicals from air c
29、onditionersB Early in the morning of June 29, 1991, Carrie and Morgenstern were watching the field. Although they could see nothing through the thick fog, they kept their camera running. By 6 a.m. the fog began to lift. A remarkable pair of circles had been flattened. Stalks (主茎) were bent but not b
30、roken. Outside the circles the wheat was untouched. Muddy though the field was, there were no footprints or other marks. The circles seemed to have come from nowhere. “ I cant explain it at all ,” Mike Carrier said to himself with his eyes wide open. Carrier is not alone since the early 1980s, more
31、than 2000 circles have appeared in farmers fields. Most circles form at night between May and August. Some believe the circles are caused by deer or some other animals. Others think of UFOs. “The circles are messages given by those who come from outer space,” says Michael Green. “Perhaps they are tr
32、ying to get in touch with us.” Pat Delgado has done research on crop circles since 1981. He believes that they are caused by “ some form of earth energy.” Most scientists think that theres no scientific basis to back up Greens or Delgados theories. Some of them say, “ We think theyre nothing but hoa
33、x(骗局).” In September 1991, Doug Bower and Dave Chorley told newsmen that since 1979 they had made circles throughout southern England to fool people who believed in UFOs. Since the early 1980s, Dr. Terence Meaden has visited more than1000 circles. Now he thinks he may have the answer. He believes tr
34、ue crop circles are made by vortex(旋风) which can flatten the crop in circular patterns. Now crop circles are still found in southern England each summer. Are they really the traces of UFOs?5. On the morning of June 29, 1991, Carrier and Morgensern hoped to_. A. record the important thing B. draw a c
35、onclusion C. find a secret of nature D. see something funny6. When he saw the crop circle, Mike Carrie was_. A. satisfied B. frightened C. surprised D interested7. Most scientists consider that theories of Green and Delgado are_. A meaningful B. reasonable C instructive D. against the laws of scienc
36、e8. According to the article we may know that all the crop circles_. A. are made by those who come from outer space B. are nothing but hoaxes C. are not hoaxes D can be explained by scientistsCThe journey to the moon had been the first step toward future exploration(探险) in space. The distance betwee
37、n the Moon and Earth is very short indeed when compared with the distances between Earth and the other planets. Mars, the nearest planet to Earth is millions of miles away. Traveling to the planets will be mans next aim. Such travels will be more challenging than the trip to the moon and certainly m
38、ore adventurous. Recently, two American spaceships, Vikings 1 and 2, landed on Mars trying to discover whether that planet has any life on it. So far the signs of life on Mars has neither confirmed(确认) nor ruled out. Russians have discovered that the surface of Venus(金星) is so hot that it is almost
39、certain that there is no life there. Also the atmosphere of Venus is extremely dense(稠) and the pressure is nearly a hundred times greater than that of the Earths atmosphere. Scientists believe man may find planets which have the same conditions as those we have on Earth , but man should realize Ear
40、th will be his only home for a long time and begin to love and care for it.9. According to the passage, traveling to the planets will be _. A. much easier and even more interesting B. far more exciting and dangerous C. mans final aim D. mans first step10. Which of the following is Not true? A. Mars
41、is nearer to the earth than the moon. B. The moon is much nearer to the earth than Mars. C. Of all the planets, Mars is the nearest to the earth. D. All the planets are much farther to the earth.11. From the passage, we can guess_. A. there is life on Mars B. there is no life on Mars C. the atmosphe
42、re of Mars is not so dense as that of Venus D. scientists will have little hope to find the answers12. Man can live on under the conditions of _. A much too hot surface B. the same pressure as we get on earth C. normal atmosphere as we have on earth D. both B and CD Unless we spend money to spot and
43、 prevent asteroids(小行星) now, one might crash into Earth and destroy life as we know it , say some scientists. Asteroids are bigger versions of the meteoroids(流星) that race across the night sky. Most orbit the sun far from Earth and dont threaten us. But there are also thousands of asteroids whose or
44、bits put them on a collision course with Earth. Buy $ 50 million worth of new telescopes right now, Then spend $ 10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say , well have a way to change its course. Some scientists favo
45、r pushing asteroids off course with nuclear weapons. But the cost wouldnt be cheap. Is it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; 2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might s
46、trike Earth once every 500 000 years. Sounds pretty rare-but if one did fall, it would be the end of the world. “ If we dont take care of these big asteroids, theyll take care of us,” says one scientist. “ Its that simple.” The cure, though , might be worse than the disease. Do we really want fleets
47、 of nuclear weapons sitting around on Earth? “The world has less to fear from doomsday(毁灭性的) rocks than from a great nuclear fleet set against them,” said a New York Times article.13. What does the passage say about asteroids and meteoroids? _.A. They are heavenly bodies different in compositionB. T
48、hey are heavenly bodies similar in natureC. These are more asteroids than meteoroidsD. Asteroids are more mysterious than meteoroids14. What do scientists say about the collision of an asteroid with Earth? _.A It is unlikely but the danger existsB. Such a collision might occur once every 25 yearsC.
49、Collision of smaller asteroids with Earth occur more often than expectedD. Its still too early to say whether such a collision might occur15. What do people think of the suggestion of using nuclear weapons to alter the course of asteroids? _. A. It sounds practical but it may not solve the problem B
50、. It may create more problems than it might solve C. It is a waste of money because a collision of asteroids with Earth is very unlikely D. Further research should be done before it is proved applicable16. We can conclude from the passage that_. A. while pushing asteroids off course nuclear weapons
51、would destroy the world B. asteroids racing across the night sky are likely to hit Earth in the near future C. the worry about asteroids can be left to future generations since it is unlikely to happen in our lifetime D. workable solutions still have to be found to prevent a collision of asteroids w
52、ith EarthIII单句改错1. Measures should be taken to stop the river from being polluting.2. The gardener explained us the development of a seed into a plant.3. The audience exploded laughter while listening to the cross talk.4. The strength of the explosion broke all the windows in the building.5. A viole
53、nce storm struck our town and caused serious damage yesterday.6. The bird was lucky enough to escape from fired.7. Having learnt the text, we know many more about gravity.8. Some animals produce their young from their bodies.9. He seems that he has worked in sales for several years. 10. Languages ha
54、ve developed for a long period of time.IV句子翻译1当SARS爆发时，突然的恐惧迅速地弥漫全国。(break out)2. 只要更努力，你终久会成功。(in time)3他们尽力使那些遭遇地震不幸的人们高兴起来。( cheer up)4我们应该想办法防止有害气体的蔓延。(prevent from)5她发现河面上有奇怪的东西浮着，这使她感到非常害怕。(float )6运动员没有听从教练员的指令，结果使他打赢比赛的计划落空。（disappoint）7随后它会变成什么曾经是一个迷, 直到最后这团尘埃开始慢慢地合成一个环绕太阳运转的球状物。（combine in
55、to ）8在未来的千百万年中, 生命能否在地球上延续将取决于这个问题能否得到解决。9有些奇怪的动物会生蛋，但又给它的幼崽喂奶。(lay eggs)10当对他们有害的动物消失时，哺乳动物便快速繁殖。(multiply)必修4Unit 4 Astronomy: the science of the stars答案第一部分：基础练习I词汇1选词填空1. spread 2.disappointed 3. floated, 4. published, publishing 5.force 6. violently 7. solid 8. exploded 9. development 10. surfa
56、ce2词组识记1. depend on 2. 把当看作3. now that 4. 科学地研究这门学科5. fall over 6. 生命的起源7. explain sth to sb 8. 使生命有可能进化9. with time passing bygoing by /as time went / passed by 10. 阻止某人做某事11. look forward to 12. 地球唯一的自然卫星13. lead to / result in 14. 慢慢升空 15. hold ones breath 16. 做笔记17. make a trip to space 18. 对知之甚
57、多19. break out 20. 找到了它的窍门II语法a. 1.what, that 2. Whoever 3.that 4. How, what 5.That 6.which 7.Whichever 8.Why 9.Where How 10.Who b. 1.What is needed for the space trip 2.who will come out first / take / get the first place 3. That Yang Liwei landed on the earth safe from space 4. when he joined the
58、Party 5. How astronauts eat, sleep and walk in space 6.Where the earth is different from / differs from other planets 7. Why he suddenly changed his mind 8. When war will disappear from the world 9. What satisfied us most / What made us most satisfied / What was most satisfying10. How we can improve
59、 our studies III单项填空ACDBA AABCC CAACD第二部分：综合练习I完形填空BBDCC DADDD ABDAC CDBCD II阅读理解CDBB ACDC BACD BABDIII单句改错1. polluting polluted 2. explained us explained to us3. exploded laughter exploded into laughter 4. strength force5.violence violent 6. from fired from being fired7. many much 8. from their bod
60、ies from within their bodies9. He It 10. for overIV句子翻译1. When SARS broke out, a sudden fear spread out quickly all over the country.2. Try harder, and you can succeed in time. 3. They tried their best to cheer up those unfortunate people suffering from the earthquake.4. We should find some ways to
61、prevent the harmful gas from spreading.5. She found something unusual floating on the surface of the river, which quite frightened her.6. The players didnt follow the directors instructions and disappointed his plan to win the game/ which disappointed his plan to win the game.7. What it was to becom
62、e was a mystery until the dust began to slowly combine into a ball moving around the sun.8. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.9. Some strange animals lay eggs but feed their young on their milk. 10. The mammals multiplied fast when the animals, harmful to them, disappeared.