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1、Unit 4 Astronomy the science of the stars Section Warming Up & Reading-Language Points.单句语法填空1Some understanding of grammar is (fundament) to learning a language.2 (like)most people in the office who come to work by car，I usually by bus.3I consider that it is (harm)for students to play computer game
2、s too much.4Some (violence)scenes in the film were cut off when it was shown on television.5Our problems have (multiply)since last year.6The party was going on in a friendly (atmospheric)7Her name in (religious) is Sister Mary.8We cant (existence) without water and food.9Youll succeed time if you ke
3、ep on working like this.10The government has to close those small factories to prevent the water of the river being polluted.【答案】1.fundamental2.Unlike3.harmful4violent5.multiplied6.atmosphere7.religion8.exist9.in10.from.单句改错1Nothing could prevent him to go out even though its bad weather. 2The plan
4、can be prevented being carried out. 3They didnt keep him expressing his views. 4It is known that two multiplying by 4 makes 8. 5There is no harm in take exercise after dinner. 【答案】1.to go改为(from) going2.being前加from3.him后加from4.multiplying改为multiplied5.take改为taking.阅读理解Of all the planets, none has ca
5、ptured the worlds imagination like Mars.Its reddish color and changes in brightness over time make the planet an unforgettable sight.In Cosmos，the television science series from the 1980s，scientist Carl Sagan talked about some traditional ideas about Mars.Some of these ideas are from the English sci
6、ence fiction writer HG.Wells The War of the Worlds.Others are from the mistaken science of Percival Lowell, the American astronomer who believed intelligent beings lived on Mars.Wells described Martians as threatening.Lowell imagined them as the hopeful engineers of great works.Carl Sagan said that
7、both ideas influenced the public deeply.Today, Mars continues to excite humansnot as the object of science fiction but of scientific study.Space scientists have collected a wealth of information from spacecrafts that have orbited, landed on and dug into the Martian surface.The Smithsonians “Mars Day
8、” offered a chance for people of all ages to touch Mars, or at least a piece of it.Allison and Alycia from Silver Spring, Maryland，brought their children, Grace, Sam, Ryan and Emma.They heard about Mars and its geology from experts.They could see a test version of the Viking landers that reached Mar
9、s in July of 1976.They also saw meteorites (陨星) known to have come from the red, or reddish planet.Eightyearold Sam learned that the ancient description of Mars as red is not exactly right.He said，“Its actually orangish more than red and its also kind of brown, too.”Emma is six.She learned about the
10、 volcanic activity that has shaped the surface of Mars.She said, “The closest thing to Marsthe stuffis from volcanoes mostly.”“Mars Day” offered Allison and Alycias children a chance to learn more about a world that they are very likely to set foot on within their lifetimes.【语篇解读】在“火星日”，人们可以对火星有更好的了
11、解和认识。1What is Paragraph 2 mainly about?AWhy Martians were considered threatening.BWhy Mars has captured the worlds imagination.CWhat people generally thought of Mars in the past.DHow HG.Wells got the idea for his science fiction.【解析】段落大意题。通读第二段可知，这一段主要是讲人们关于火星的一些传统认识，故选C。【答案】C2It is implied in Parag
12、raph 3 that Atodays space scientists still know nothing about MarsBtodays space scientists are very interested in MarsCscience fiction films are no longer set in MarsDspace scientists havent made any progress in knowing Mars【解析】推理判断题。根据第三段的“Today，Mars continues to excite humansnot as the object of s
13、cience fiction but of scientific study.”以及后一句“Space scientists have collected a wealth of information.”可推断现在的航天科学家们对火星很感兴趣。【答案】B3Sam would probably agree that AMars is not really redBno meteorites have come from MarsCMars cannot be described as a little brownDthe ancient description of Mars color is
14、 true【解析】细节理解题。根据第四段的“He said，Its actually orangish more than red and its also kind of brown，too.”可知Sam认为火星并不是红色的，而是橘黄色甚至带点褐色，故选A。【答案】A4What is the writers attitude toward the idea that humans will set foot on Mars?AHe thinks it may happen in this year.BHe thinks it will always remain a dream.CHe thinks it will come true within hundreds of years.DHe thinks it may happen in the following decades.【解析】推理判断题。根据末段的“a world that they are very likely to set foot on within their lif
