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1、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 _ he was lat
2、e.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 west to be rep
3、laced 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 the _8_ of a
4、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.1. A. recall B
5、. retell C. remind D. advise2. A. stars B. planets C. satellites D. subjects3. A. make B. have C. force D. let4. A. Hidden B. To hide C. Hiding D. Appearing5. A. year B. month C. day D. season6. A . truly B. exactly C. actually D. possibly7. A. team B. class C. kind D. group8. A. form B. shape C. fi
6、gure D. formation9. A. highest B. lowest C. higher D. deepest10. .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 planet, the explosions were watc
7、hed 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 earth. The news has caused panic.On 17 July,
8、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 created and spreads. The wall of water rushes to
9、wards 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 of the earth, but the north wont escape for lon
10、g. 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 civilization has collapsed. No more than 10 million people
11、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 believed that the earth was hit by a space fragment.
12、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 extremely cold.B. All the coastal cities in Africa are dest
13、royed.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.C. Because their extinction indicates future disasters.D.
14、 Because dinosaurs and humans never live in the same age3. In writing the passage, the author intends to _.A. give an accurate description of the possible disaster in the futureB. prove that humans will sooner or later be destroyedC. tell the historical development of the earthD. warn of a possible disaster in the future4. It can be concluded that the passage is most probably part of a(n) _.A. horror storyB. news reportC. research paperD. article of popular scienceBEdmund Halley was an English scientist who lived over 200 years ago. He studi
