1、 Unit4 Astronomynullthe science of the Stars 一null用适当的连词填空null 1. The fact is _ I have lost his address. 2. Go and get your coat. Its _ you left it. 3. I wonder _ you are getting on with your studies. 4. The question is _ can complete the difficult task. 5. He got caught in the heavy traffic. That w
2、as _ he was late. 6. _ leaves the room last ought to turn off the light. 7. _ you have done might do harm to others. 二null完形 Exploring the autumn sky The cool nights of autumn are here to_1_ us the chill of winter is not far off. Along with the cool air, the brilliant _2_ of the summer triangle fall
3、 in the west to be replaced with a rather bland-looking region of sky. But dont_3_ initial appearances deceive you._4_ in the fall sky are gems equal to summertime. The Big Dipper swings low this _5_, and for parts of the southern United States it _6_ sets. Cassiopeia the Queen, a _7_ of five bright
4、 stars in the _8_ of a “W“ or “M,“ reaches its _9_ point overhead, the same spot the Big Dipper reached 6 months _10_. To the east of Cassiopeia, Perseus the Hero rises high. Nestled between these two groups is the wondrous Double Cluster NGCs 869 and 884 a fantastic sight in binoculars or a low-pow
5、er telescope. 1. A. recall B. retell C. remind D. advise 2. A. stars B. planets C. satellites D. subjects 3. A. make B. have C. force D. let 4. A. Hidden B. To hide C. Hiding D. Appearing 5. A. year B. month C. day D. season 6. A . truly B. exactly C. actually D. possibly 7. A. team B. class C. kind
6、 D. group 8. A. form B. shape C. figure D. formation 9. A. highest B. lowest C. higher D. deepest 10. .A. before B. ago C. since D. later nullnull阅读理解 In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of comet(彗星).When the fragments(碎片)landed in the southern part
7、of the giant planet, the explosions were watched by scientist here on earth. But what if our own planet was hit by a comet? The year is 2094. It has been announced that a comet is heading towards the earth. Most of it will miss our planet, but two fragments will probably hit the southern part of the
8、 earth. The news has caused panic. On 17 July, a fragment four kilometers wide enters the earths atmosphere with a huge explosion. About half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the speed of sound. The sea boils and an enormous wave is c
9、reated and spreads. The wall of water rushes towards southern Africa at 800 kilometers an hour. Cities on the African coast are totally destroyed and millions of people are drowned. The waves moves into the Indian Ocean and heads towards Asia. Millions of people are already dead in the southern part
10、 of the earth, but the north wont escape for long. Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight for food. A year later civilizatio
11、n has collapsed. No more than 10 million people have survived. Could it really happen? In fact, it has already happened more than once in the history of the earth. The dinosaurs(恐龙)were on the earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists beli
12、eved that the earth was hit by a space fragment. The dinosaurs couldnt survive in the cold climate that followed and they became extinct. Will we meet the same end? 1. Which of the following in NOT true according to the authors description of the disaster in 2094? A. The whole world becomes extremel
13、y cold. B. All the coastal cities in Africa are destroyed. C. The whole mankind becomes extinct. D. The visit of the comet results in war. 2. Why does the author mention dinosaur at the end of the passage? A. Because they could only live in the warm climate. B. Because they once dominated the earth.
14、 C. Because their extinction indicates future disasters. D. Because dinosaurs and humans never live in the same age 3. In writing the passage, the author intends to _. A. give an accurate description of the possible disaster in the future B. prove that humans will sooner or later be destroyed C. tel
15、l the historical development of the earth D. warn of a possible disaster in the future 4. It can be concluded that the passage is most probably part of a(n) _. A. horror story B. news report C. research paper D. article of popular science B Edmund Halley was an English scientist who lived over 200 y
16、ears ago. He studied the observations of comets(彗星)which other scientists had made. The orbit of one particular comet was a very difficult mathematical problem. He could not figure it out. Neither could other scientists who dealt with such problems. However, Halley had a friend named Isaac Newton, w
17、ho was a brilliant mathematician. Newton thought he had already worked out that problem, but he could not find the papers on which he had done it. He told Halley that the orbit of a comet had the shape of an ellipse(椭圆形). Now Halley set to work. He figured out(解决，计算null)the orbits of some of the com
18、ets that had been observed by scientists. He made a surprising discovery. The comets that had appeared in the years 1531, 1607, and 1682 all had the same orbit. Yet their appearance had been 75 to 76 years apart. This seemed very strange to Halley. Three different comets followed the same orbit. The
19、 more Halley thought about it, the ore his thought that there had been three different comets as people thought. He decided that they had simply seen the same comet three times. The comet had gone away and had come back again. It was an astonishing idea! Halley felt certain though to make a predicti
20、on(预言)of what would happen in the future. He decided that this would appear in the year 1758. There were 53 years to go before Halleys prediction could be tested. In 1758 the comet appeared in the sky. Halley did not see it, for he had died some years before. Ever since then that comet had been call
21、ed Halleys comet, in his honor. 5 Edmund Halley figured out the orbit of _. A. some different comets appearing several times B. the same comet appearing at different times C. three different comets appearing at the same time D. several comets appearing at the same time 6. Halley made his discovery _
22、. A. by doing experiments B. by means of his own careful observation C. by using the working of other scientists D. by chance 7. Halley made a surprising, but correct prediction in the year_. A. 1704 B. 1705 C. 1706 D. 1707 8. This passage in general is about _. A. Halley and other scientists B. the
23、 orbit of a comet C. Newton and Halley D. Halley and his discovery 9. Which of the following is TRUE? A. Edmund Halley was an American scientist. B. Halley made his discovery by doing experiments. C. Isaac Newton was a famous mathematician. D. The orbit of a comet had the shape of an around. 参考答案 用适
24、当的连词填空null 1. that 2. where 3. how 4. who 5. why 6. whoeve 7. what 完形(Keys: 1. C 2. A 3. D 4. A 5. D 6. C 7. D 8. B 9. A 10. B ) 1. 选nullCnullnullnull是一道null误判断题null在倒数第二段中作者写道“A year later civilization has collapsed. No more than 10 million people have survived.”说明人类文明灭绝了， 而不是人类灭绝了null 2. 选nullCnul
25、lnullnull是一道null旨推断题nullnull了证明null种灾难发生的可能性，作者列举了恐龙的例 子null曾null在地球null生活了1亿6千万年，但是在6千5百万年前突然消失，以 null证明未来地球null可能发生灾难null 3. 选nullDnullnullnull是一道null旨推断题null在null篇短文中，作者讲述了2094年彗星碎片撞null地球 后可能产生的灾难，其目的是警告人们在地球的未来可能会发生灾难null 4. 选nullDnullnullnull是一道推理判断题null根据短文讲述的内容可以判断，null是一篇科幻小说，所 以它可能是某篇科普文章的
26、一部分null 5. 选nullBnullnullnull是一道综合判断题null根据文章的第四段“He decided that they had simply seen the same comet three times.”及null文提到的看彗星的时间分别是1531年null1607 年null1682年可判断null确答案null选项Bnull 6. 选nullCnullnullnull是一道细节理解题null根据文章第一段“He studied the observations of comets which other scientists had made.”可知，哈雷的发现是
27、在研究其他科学家们的观 察中得null来的null 7. 选nullBnullnullnull是一道计算题null文中的“He decided that this would appear in the year 1758. There were 53 years to go before Halleys prediction could be tested.”null句话告诉 我们null他预言彗星null现的时间是1758年，而null个预言null要null过53年才能验证， 由null可以推断null哈雷做nullnull个预言的时间是1705年null 8. 选nullDnullnullnull是一道null旨大意题null纵观全文，不难看null，文章的中心就是哈雷以及他的发 现null 9 选nullCnullnullnull是一道综合判断题null从文章首句可以看nullA项错误null从第二题的分析中可 知B项也错误null牛顿告诉哈雷彗星的轨道是椭圆形的，可排除Dnull
