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1、1 / 6 Unit4 Astronomy ：the science of the Stars一：用适当的连词填空；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 was _
2、he was late. 6. _ leaves the room last ought to turn off the light. 7. _ you have done might do harm to others. 二、完形 Exploring the autumn skyThe 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 in the w
3、est 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 stars in
4、 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-power telescope.
5、 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 D. group 8.
6、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 三、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 of the giant plane
7、t, the explosions were watched by scientist here on earth. But what if our own planet was hit by a comet? 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 1 页，共 6 页2 / 6 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 fragment
8、s will probably hit the southern part of the earth. The news has caused panic. On 17 July, a fragment four kilometers wide enters the earth s 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 s
9、ound. The sea boils and an enormous wave is created 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
10、 people are already dead in the southern part of the earth, but the north won t 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 coun
11、tries fight for food. A year later civilization 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
12、they suddenly disappeared. Many scientists believed that the earth was hit by a space fragment. The dinosaurs couldn t 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 author s description of the disa
13、ster in 2094? A. The whole world becomes extremely 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 c
14、limate. B. Because they once dominated the earth. C. Because their extinction indicates future disasters. D. Because dinosaurs and humans never live in the same age 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 2 页，共 6 页3 / 6 3. In writing the passage, the author intends to _. A. give an accurate d
15、escription of the possible disaster in the future B. prove that humans will sooner or later be destroyed C. tell 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 repor
16、t C. research paper D. article of popular science B Edmund Halley was an English scientist who lived over 200 years 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
17、. Neither could other scientists who dealt with such problems. However, Halley had a friend named Isaac Newton, who 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
18、 had the shape of an ellipse(椭圆形 ). Now Halley set to work. He figured out(解决，计算出)the orbits of some of the comets 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 bee
19、n 75 to 76 years apart. This seemed very strange to Halley. Three different comets followed the same orbit. The 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 h
20、ad gone away and had come back again. It was an astonishing idea! Halley felt certain though to make a prediction(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 Halley s prediction could be tested. In 1758 the comet appear
21、ed in the sky. Halley did not see it, for he had died some years before. Ever since then that comet had been called Halley s comet, in his honor.5 Edmund Halley figured out the orbit of _. 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 3 页，共 6 页4 / 6 A. some different comets appearing several times
22、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 _. A. by doing experiments B. by means of his own careful observation C. by using the working of other scientists D. by chance
23、 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 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
24、 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. 参考答案用适当的连词填空：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 )
25、1. 选【 C】。这是一道正误判断题。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，精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 4 页，共 6 页5 / 6 而不是人类灭绝了。2. 选【 C】。这是一道主旨推断题。为了证明这种灾难发生的可能性，作者列举了恐龙的例子。曾经在地球上生活了1 亿 6 千万年，但是在6千 5 百万年前突然消失，以此证明未来地球上可能发生灾难。3
26、. 选【 D】。这是一道主旨推断题。在这篇短文中，作者讲述了2094 年彗星碎片撞击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。4. 选【 D】。这是一道推理判断题。根据短文讲述的内容可以判断，这是一篇科幻小说，所以它可能是某篇科普文章的一部分。5. 选【 B】。这是一道综合判断题。根据文章的第四段“ He decided that they had simply seen the same comet three times.” 及上文提到的看彗星的时间分别是1531 年、 1607 年、 1682 年可判断正确答案为选项B。6. 选【 C】。这是一道细节理解题。根据文
27、章第一段“ He studied the observations of comets which other scientists had made. ” 可知，哈雷的发现是在研究其他科学家们的观察中得出来的。7. 选【 B】。这是一道计算题。文中的“ He decided that this would appear in the year 1758. There were 53 years to go before Halley s prediction could be tested.”这句话告诉我们：他预言彗星出现的时间是1758 年，而这个预言还要经过53 年才能验证，由此可以推断出哈雷做出这个预言的时间是1705 年。8. 选【 D】。这是一道主旨大意题。纵观全文，不难看出，文章的中心就是哈雷以及他的发现。9 选【 C】。这是一道综合判断题。从文章首句可以看出A 项错误；从第二题的分析中可知 B 项也错误；牛顿告诉哈雷彗星的轨道是椭圆形的，可排除D。精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 5 页，共 6 页6 / 6 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 6 页，共 6 页