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单选题{{B}}B{{/B}} In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet (慧星). When the fragments (碎片) landed in the southern part of the giant planet, the explosions were watched by scientists 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, 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 sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes towards southern Africa at 800 kilometres an hour. Cities On the African coast are totally destroyed and millions of people are drowned. The wave 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 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 Mined. Wars break out as countries 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 they suddenly disappeared. Many scientists believe 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?

单选题What’s going to be difficult for the man?

单选题 阅读下面短文，从短文后所给各题的四个选项(A、B、C、D)中选出能填入相应空白处的最佳选项。 Martin Luther King Jr. was born in Georgia in 1929. When was {{U}}(36) {{/U}} a boy Martin learned that his{{U}} (37) {{/U}}, the black Americans, were{{U}} (38) {{/U}}treated differently from most of {{U}}(39) {{/U}}fellow Americans. Many could not attend good schools, {{U}}(40) {{/U}} good jobs, or live in nice houses because of the color of their {{U}}(41) {{/U}}. Martin knew that in a free country this was {{U}}(42) {{/U}}. He wanted to help his black brothers, {{U}}(43) {{/U}}he decided to go to school and 44 a minister. He became a pastor (牧师) in Montgomery, Alabama. This is{{U}} (45) {{/U}}Martin Luther King's "peaceful fight" first began. Dr. King worked{{U}} (46) {{/U}}equality in other cities. He knew that the{{U}} (47) {{/U}}way people could win their rights was to remain peaceful,{{U}} (48) {{/U}}in face of danger. Dr. King won the Nobel Peace Prize in 1964 for his achievements and{{U}} (49) {{/U}}. The whole nation{{U}} (50) {{/U}}the terrible event that{{U}} (51) {{/U}}on April 4, 1968, in Memphis, Tennessee. Martin Luther King Jr. was {{U}}(52) {{/U}}. The man who had preached (倡导) nonviolence (非力) died{{U}} (53) {{/U}}. But Dr. King's dream can never{{U}} (54) {{/U}}. Many Americans are still {{U}}(55) {{/U}}to make that dream come true.

单选题Tim never dreamt of ______ for him to be met by his boss very soon.[A] being a chance[B] there's a chance[C] there to be a chance[D] there being a chance

单选题Whatisthemanplanningtodo?A.Studyatadifferentschool.B.Movetoawarmerstate.C.Getatravelagent'slicense.

单选题Which of the following statements is best supported by the last paragraph?

单选题Once lost ______.

单选题Look, ______ moon tonight is very beautiful. A. the B. a C. X

单选题She was so tired that she fell asleep_________in her chair.

单选题[此试题无题干]

单选题Whom do you think the woman was angry with?

单选题The boy caught five ______ yesterday.

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单选题He will probably be awarded a Nobel Prize on account of his ______ achievements in chemistry.A. highB. worthwhileC. outstandingD. powerful

单选题—I thought you might have got drunk. —I ______.

单选题A beautiful young woman stopped a taxi in a big square and said to the driver, "Do you see that young man at the other side of the square?" "Yes," said the driver. The young man was standing outside a restaurant and looking at his watch every few seconds. "Take me over there," said the young woman. There were a lot of cars, buses and trucks in the square, so the taxi driver asked, "Are you afraid to cross the street?" "Oh, no." said the young woman. "But I said I would meet that young man for lunch at one o'clock, and it is now a quarter to two. If I arrive in a taxi, it will at least seem that I have tried not to be too late./

单选题Tony couldn't go to university but______ his education through evening school courses.