1、Unit 4Astronomy:the science of the starsSection Warming Up,Pre-reading,Reading & Comprehending课后篇巩固提升一、用方框内所给短语的适当形式填空in timebe harmful togive birth toin ones turnprevent.from.be puzzled aboutcome intoexistence1.During the car accident,he was to escape from the car without being hurt.答案in time2.No m
2、atter what will happen,nothing and nobody can the plan being carried out.答案prevent;from3.She lost heart since she failed in the exam.She her future.She had no idea what to do next.答案was puzzled about4.Scientists have many theories about how the universe first .答案came into existence5.After the second
3、 competitor went off the stage,my son went onto the stage to perform .答案in his turn6.He told us happily that his wife would a baby the next week and that he would be a father.答案give birth to二、用所给词的适当形式填空1.As you know,the customers have (multiply) their demands on this kind of products recently.答案mul
4、tiplied2.Many of them believe the (exist) of ghosts.答案existence3.It is known that a bad eating habit is (harm) to ones health.答案harmful4.There were 200 people (presence) at the meeting.答案present5.He looked (puzzle) so I repeated the question.答案puzzled6.The prisoner was led off the boat in (chain).答案
5、chains7.A (violence) tornado hit a village in southwest of China the other day.答案violent8.(like) what he said,he didnt carry out his promise.答案Unlike三、单句填空 1.People cant afford expensive things the prices of daily goods going up.答案with2.Thats the best way (stop)people getting into dangerous areas.答案
6、to stop3.The top leaders of G20 are discussing the global problems a friendly atmosphere.答案in4.Please remember wins you respect is not your background and appearance but your knowledge and virtues.答案what 5.As the busiest woman in the neighbourhood,she made her duty to look after all other peoples af
7、fairs.答案it6.Going on a trip into space must be quite exciting experience.答案an7.We cant continue to pretend that the problem of homelessness doesnt exist this city.答案in8.Its extremely (unlike) to reach an agreement between us.答案unlikely四、翻译句子1.如果你想及时参加会议,必须现在动身。(in time)答案You must set off now if you
8、want to attend the meeting in time.2.他们轮流回答张先生的问题。(turn)答案They answered Mr.Zhangs questions in turn/by turns.3.你的想法在理论上是对的。(theory)答案Your idea is right in theory.4.这次大雪对我们的交通很不利。(harmful)答案This heavy snow is harmful to our traffic.五、阅读理解Next Stop PlanetMarsFly me to the moon?Thats not far enough.On
9、September 14,2011,NASA released designs for a super rocket,the Space Launch System(SLS).This time the final destination will be Mars.The SLS is a huge,liquid-fuelled rocket.If it is fully developed,it will be the most powerful rocket ever built.Its lift capability(容量)will be much bigger than that of
10、 the space shuttle of Saturn 5,the rocket that sent the Apollo missions to the moon.NASA is planning to launch its first unmanned test flight in 2017.It is hoped that the first crew will fly in 2021 and astronauts will make it to a nearby asteroid(小行星)in 2025.NASA hopes to send the rocket and astron
11、auts to Mars from the asteroid by the 2030s,according to the Associated Press(AP).NASA used liquid rockets to send Apollo,Gemini and Mercury into space,but later changed to solid rockets boosters(助推火箭)because they were cheaper.Unluckily,however,a booster flaw(缺陷)caused the space shuttle Challenger t
12、o crash in 1986.The new project plans to return to liquid fuel.According to AP,the rockets will at first be able to carry 77 to 110 tons of payload(净载重量).In the end they will be able to carry 143 tons into space,maybe even as many as 165 tons,NASA officials said.By comparison,the Saturn 5 booster co
13、uld lift 130 tons and the space shuttle just 27 tons.However,unlike reusable shuttles,these powerful rockets are mostly one use only.New ones have to be built for every launch.This will be very costly.NASA estimates(估计)that it will cost about $3 billion(19 billion yuan)per year,or $ 18 billion until
14、 the first test flight in 2017.NASA hopes to make money by allowing private companies to send astronauts to the International Space Station like giant taxi services,so that the program can be “sustainable(养得起的;可持续的)”.“This is perhaps the biggest thing for space exploration(探索)in decades,”said Senato
15、r Bill Nelson,a former astronaut.“The goal is to fly humans safely beyond low-Earth orbit(轨道)and deep into outer space where we cannot only survive,but one day also live environmentally friendly.” 1.How much will SLS program cost by the year 2017?A.$3 billion.B.$6 billion.C.$9 billion.D.$18 billion.
16、答案D解析细节理解题。从第七段第一句“NASA estimates that it will cost about $3 billion(19 billion yuan)per year,or $18 billion until the first test flight in 2017.”可知答案。2.According to NASAs schedule,it will take years to fully complete the SLS program.A.about 6B.about 10C.less than 14D.more than 19答案D解析推理判断题。从第一段开始的时
17、间为On September 14,2011可知,该计划完成的时间为by the 2030s,故完成共需19年多,选D项。3.It can be inferred from the passage that .A.the SLS program is planning to make reusable rocketsB.the goal of the SLS program is to enable humans to live on the moonC.the US government may not have provided enough money for the SLS progr
18、amD.NASA will use SLS as a space taxi between the Earth and Mars答案C解析推理判断题。从第六段第一句“However,unlike reusable shuttles,these powerful rockets are mostly one use only.”可知A项错误;从第三段最后一句“NASA hopes to send the rocket and astronauts to Mars from the asteroid by the 2030s.”可知B项错误;从第七段第二句“NASA hopes to make m
19、oney by allowing private companies to send astronauts to the International Space Station like giant taxi services,so that the program can be sustainable.”可知D项错误,故选C项。六、语篇填空No one 1.(know)exactly how the earth began.According to a 2.(wide)accepted theory,the universe began with a “Big Bang”,3. explod
20、ed loudly and produced water vapour and many 4.,(gas)making the earths atmosphere.As the earth cooled down,water appeared and stayed 5. the surface.It was the presence of water that allowed the earth to dissolve harmful gases and acids into the oceans and seas,which made 6. possible for life to deve
21、lop.First,the appearance of small plants encouraged the later development of early shellfish and all sorts of fish.Next,green plants began to grow on land,7.(follow) by land animals.So reptiles appeared for the first time.Later,dinosaurs developed.However,they suddenly disappeared.After that,mammals
22、 came into being.Finally,humans 8.(appear)and spread all over the earth.However,they are putting too much carbon dioxide into the atmosphere,9.(make)the earth too hot to live on.So,whether life will continue on the earth for millions of years to come will depend on 10. this problem can be solved.答案1.knows2.widely3.which4.gases5.on6.it7.followed8.appeared9.making10.whether
