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1、 Unit 4 Amazing Science Topic 3周末作业.单项选择。(10分)( )1.Half a month _ since I came to Beijing, I miss my students very much.A.have passedB.have pastC.has passedD.has past( )2.It is said that an old man lives on the _ island _.A.alone; aloneB.alone; lonelyC.lonely; lonelyD.lonely; alone( )3.To make our c
2、ity more beautiful, rubbish _ into the river.A.neednt be thrownB.mustnt be thrownC.cant throwD.may not throw( )4.The baby should _ at home.A.be taken careB.be taken care ofC.take careD.take care of( )5.My son is too fat, so I have to _ his food and drink.A.saveB.limitC.encourageD.affect( )6.Harry Po
3、tter and Sorcerers Stone is quite a good book. Its worth _.A.readB.readsC.to readD.reading( )7.Your car _ be put here. Please put it over there.A.cantB.canC.mayD.may not( )8.Scientists are doing experiments in order _ the Mars soon.A.to exploreB.exploreC.that exploreD.to exploring( )9.There _ a man-
4、made planet in space.A.will beB.is going to haveC.has beenD.is( )10._ the help of the Internet, news can _ every country of the world.A.Under; arriveB.With; reachC.In; goD.With; get.情景交际。(5分)A: Hi, Mary. There will be an exciting movie next Sunday evening. 11 B: Sure. What is it about?A: 12 B: Is it
5、 interesting?A: Yes. People can visit planets like Mars by spaceship.B: 13 A: Yes. There are houses, hospitals, cities on Mars in the movie.B: How exciting! 14 A: Do you think man can live in space one day?B: 15 I hope I can live there one day.A.Can we live on Mars?B.Would you like to see it?C.I thi
6、nk so.D.I cant wait.E.Its about life on Mars.F.I dont agree with you.G.That sounds wonderful.11._ 12._ 13._ 14._ 15._.完形填空。(10分)Last Wednesday, Mr. Green took his class to the Space Museum. There 16 many things about space there. First, the children saw a film about space travel. They saw 17 the spa
7、ceship took off into space and landed on the earth 18 . It was very exciting and the children felt they were traveling in space 19 !After the film, Mr. Green took 20 to see some models of rockets and the shuttles. The models looked very real, but they were much 21 . 22 the children saw some moon roc
8、ks. Two 23 landed on the moon in 1969, and they put up an American flag there. Then they took some rocks back to the 24 . 25 the children left, they also watched a video show about people living and working in a space lab. The people could stay in the space lab for months.( )16.A.isB.areC.wasD.were(
9、 )17.A.howB.whatC.whenD.which( )18.A.tooB.alreadyC.againD.badly( )19.A.itselfB.ourselvesC.oneselfD.themselves( )20.A.theirB.themC.theyD.theirs( )21.A.smallB.smallerC.bigD.bigger( )22.A.OrB.ButC.AndD.Then( )23.A.AmericansB.EnglishmenC.AustraliansD.Chinese( )24.A.moonB.starC.earthD.sun( )25.A.AfterB.A
10、s soon asC.UntilD.Before.阅读理解。(30分)(A)Is there life on Mars? We dont know. Were sure that people on the earth are not able to live on Mars. People need oxygen to breathe in. There is almost no oxygen on Mars.Living on Mars would be like living on a very high mountain. There would be little air. The
11、temperature might be 50 degrees above zero at noon and 140 degrees below zero at night. Many people think there may be plants on Mars. We know that on Mars there is carbon(碳). This is a kind of material found in all plants and animals on the earth. Through a telescope, Mars looks red. In some places
12、, it seems gray. At times the gray color turns gray-green, then brown, then gray again. The gray-green color may be a kind of plant life changing color with the seasons.Will men go to Mars one day? If they do, they must take enough oxygen, food and clothing with them.根据短文内容，判断正(T)误(F)。( )26.There is
13、 enough oxygen for us to live on Mars.( )27.Its too hot in the daytime but its too cold at night on Mars.( )28.We can find carbon in all plants and animals on the earth.( )29.Sometimes Mars looks blue.( )30.If one day we can go to Mars, we must take enough oxygen, food and clothing with us.(B)We hav
14、e always been interested in the moon. 2, 000 years ago, people already knew it moves around the earth and where it would be in the sky at different times of the year. At that time, everything about the moon was learned by watching it carefully in the sky.When scientists could use telescopes to study
15、 the moon more closely, their ideas began to change. They could see the moon was made of rocks. Most scientists thought moon rocks would be different from those on the earth. This was because they believed the moon had once been a planet that had been caught in the earths gravity millions of years e
16、arlier.In 1969, moon rocks were finally brought to the earth and studied. Much to their surprise, scientists found that, except for water, the moon and the earth were made of the same things. Once again new ideas were needed for this new information.After years of study, most scientists now think th
17、at the moon was once part of the earth. They believe very early in its history, maybe 4 billion years ago, something about the size of Mars hit the earth. This sent billions of rocks into space around our planet. These rocks slowly joined together and after many years became the moon.In the future,
18、even though our ideas about the moon may change again, we will still be interested in it.( )31.2, 000 years ago people already knew _.A.the earth moved around the moonB.the moon and the earth were made of the same thingsC.the moon was made of rocksD.the moon moves around the earth( )32.Before 1969 m
19、ost scientists thought the moon was _. A.part of the earth billions of years earlierB.older than the earthC.a planet caught by the earths gravityD.made of the same things as the earth( )33.After years of study, most scientists now think _.A.the earth was once part of the moonB.the moon was once part
20、 of the earthC.something about the size of Mars will hit earth in the near futureD.a lot of rocks will slowly join together to become the other moon( )34.The writer wants to tell us in this passage_.A.why people are interested in the moonB.how ideas about the moon have changed over timeC.where the m
21、oon came from in the pastD.the people have finally learned the truth about the moon ( )35.From this passage we can learn that _.A.scientists in the past were not cleverB.scientists are so clever that they know everythingC.new information brings new ideasD.we now know everything about the moon(C)On J
22、une 24, 1947, a US pilot named Kenneth Arnold looked out the window of his plane and saw nine silver objects flying close together.They were moving very quickly. Kenneth guessed that their speed was more than 1,600 kilometres an hour. He told journalists that the objects did not move like planes, bu
23、t like saucers（碟状物） move when someone throws them across the surface of water. Later one of the journalists called the objects “flying saucers”.This was the first time the expression “flying saucer” was used, but people have seen UFOs (unidentified flying objects) in the sky centuries ago. For examp
24、le, in the thirteenth century some English farmers saw a flat, silver object in the sky. This is surprising because in those days there were no planes, weather balloons, or space stations that could be mistaken for UFOs.Today, many UFOs turn out to be something quite ordinary. One evening in Februar
25、y 2001, eight colored lights appeared in the sky above Kuala Lumpur in Malaysia. The lights seemed to float in the air for ten minutes before moving off and disappearing. Many people thought they were UFOs. They turned out to be good luck lanterns(灯笼) that had been released from a temple.Most UFOs c
26、an be explained like this. However, there are many that cant. Surveys show that at least half of us believe intelligent life exists on other planets. Is it possible, therefore, that someone from “out there” is visiting us?根据短文内容，回答下列问题。36.Where was Kenneth Arnold when he saw the silver objects?_37.H
27、ow many silver objects were there in the sky?_38.How did the objects move?_39.What were the colored lights in Kuala Lumpur?_40.将文中画线部分的句子翻译成汉语。_第三部分 写作（25分）.词汇。(10分)(A)根据句意及首字母提示补全单词。1.Hes doing r_ on the causes of cancer.2.The book is b_ on a real story.3.He wouldnt travel with us b_ the border(边境)
28、.4.My knowledge of French is pretty b_.5.The weather report says that there will be a strong s_ this afternoon.(B)根据句意，用所给单词的适当形式填空。6._ (science) research should be done carefully.7.He _ (risk) all his money on a game of cards.8.Many families _ (separate) by the war.9. I _ (hand) the watch in to the
29、 police.10.The EU has set strict _ (limit) on levels of pollution.英汉互译。(5分)11.我们登上火星已经两天了。It _ _ two days _ we landed on Mars.12.随着社会的发展，地球有可能被污染到不适合居住的程度。_ the development of the society, our earth may be too polluted for people to _ _.13.直到亲眼所见我才相信这件事。I _ believe it _ I see it with my own eyes.14.地球在距离太阳数十亿公里的地方旋转。The earth travels around the sun _ _ _ _ billions of kilometers.15.更糟糕的是，我们的水供应很短缺。_ _ _, our water supplies were very low.书面表达。(10分)假设你是王强，你们班最近举行了一次主题班会: 太空探险的意义。请根据下表的内容，介绍所讨论的情况并发表自己的观点。(80词左右)一些同学赞同一些同学反对你自己的观点1.获得新知识2.从太空取得新资源3.给人类带来更大的生存空间1.耗资巨大2.宇航员的安全问题