"IF ALIENS are so likely， why have we never seen any？" That is the Fermi Paradox（悻论） ﹣ named after Enrico Fermi， a physicist who posed it in 1950．
Fermi's argument ran as follows． The laws of nature supported the appearance of intelligent life on Earth． Those laws are the same throughout the universe． The universe contains zillions of stars and planets． So， even if life is unlikely to arise on any particular astronomical body， the sheer abundance of creation suggests the night sky should be full of alien civilizations． Fermi wondered why aliens had never visited the earth． Today， the paradox is more usually cast in light of the inability of radio﹣telescope searches to detect the equivalent（相等的） of the radio waves that leak from Earth into the universe， and have done for the past century．
Thinking up answers to this apparent contradiction has become something of a scientific parlour（客厅）game． Perhaps life is really very unlikely． Perhaps the priests are right： human beings were put on Earth by some creator God for His own unknown purposes， and the rest of the universe is merely background scenery． Perhaps there are plenty of aliens， but they have decided that discretion is a safer bet than gathering together． Or perhaps galactic（银河的） society avoids communicating with Earth specifically． One frightening idea is that technological civilizations destroy themselves before they can make their presence known． They might blow themselves up after inventing nuclear weapons （an invention that， on Earth， Fermi had been part of）， or cook themselves to death by over﹣burning fossil fuels．
In a paper published last month on arXiv， an online repository（文献库） ， a group of three astronomers at Pennsylvania State University have analyzed the history of alien hunting and come to a different conclusion． In effect， they reject one of the paradox' s main theory． Astronomers have seen no sign of aliens， argue Jason Wright and his colleagues， because they have not been looking hard enough．
1.What is the Fermi Paradox？
A. The law of universe supported the appearance of aliens but we never see any．
B. A theory about whether aliens exist on the earth and why we can't see them．
C. Fermi thought that aliens never existed because it was completely a paradox．
D. Fermi concluded that aliens did exist but they could not be seen by humans．
2.What can we conclude from the second paragraph？
A. The universe doesn't provide the abundance of creation of life．
B. Fermi thought aliens never visited the earth in the history of human．
C. The inability of radio﹣telescope may result in the failure of finding aliens．
D. The civilizations on the earth have been detected by aliens in the universe．
3.What does the word underlined in the third paragraph mean？
A. Getting together．
B. Fighting each other．
C. Hating each other．
D. Living separately．
4.How do Jason Wright and his colleagues find the Fermi Paradox？
A. They firmly believe that it is out of date．
B. They actually doubt the base of the paradox．
C. They want to prove that it is completely right．
D. They conclude that aliens actually never exist．
高三英语阅读理解困难题
"IF ALIENS are so likely， why have we never seen any？" That is the Fermi Paradox（悻论） ﹣ named after Enrico Fermi， a physicist who posed it in 1950．
Fermi's argument ran as follows． The laws of nature supported the appearance of intelligent life on Earth． Those laws are the same throughout the universe． The universe contains zillions of stars and planets． So， even if life is unlikely to arise on any particular astronomical body， the sheer abundance of creation suggests the night sky should be full of alien civilizations． Fermi wondered why aliens had never visited the earth． Today， the paradox is more usually cast in light of the inability of radio﹣telescope searches to detect the equivalent（相等的） of the radio waves that leak from Earth into the universe， and have done for the past century．
Thinking up answers to this apparent contradiction has become something of a scientific parlour（客厅）game． Perhaps life is really very unlikely． Perhaps the priests are right： human beings were put on Earth by some creator God for His own unknown purposes， and the rest of the universe is merely background scenery． Perhaps there are plenty of aliens， but they have decided that discretion is a safer bet than gathering together． Or perhaps galactic（银河的） society avoids communicating with Earth specifically． One frightening idea is that technological civilizations destroy themselves before they can make their presence known． They might blow themselves up after inventing nuclear weapons （an invention that， on Earth， Fermi had been part of）， or cook themselves to death by over﹣burning fossil fuels．
In a paper published last month on arXiv， an online repository（文献库） ， a group of three astronomers at Pennsylvania State University have analyzed the history of alien hunting and come to a different conclusion． In effect， they reject one of the paradox' s main theory． Astronomers have seen no sign of aliens， argue Jason Wright and his colleagues， because they have not been looking hard enough．
1.What is the Fermi Paradox？
A. The law of universe supported the appearance of aliens but we never see any．
B. A theory about whether aliens exist on the earth and why we can't see them．
C. Fermi thought that aliens never existed because it was completely a paradox．
D. Fermi concluded that aliens did exist but they could not be seen by humans．
2.What can we conclude from the second paragraph？
A. The universe doesn't provide the abundance of creation of life．
B. Fermi thought aliens never visited the earth in the history of human．
C. The inability of radio﹣telescope may result in the failure of finding aliens．
D. The civilizations on the earth have been detected by aliens in the universe．
3.What does the word underlined in the third paragraph mean？
A. Getting together．
B. Fighting each other．
C. Hating each other．
D. Living separately．
4.How do Jason Wright and his colleagues find the Fermi Paradox？
A. They firmly believe that it is out of date．
B. They actually doubt the base of the paradox．
C. They want to prove that it is completely right．
D. They conclude that aliens actually never exist．
高三英语阅读理解困难题查看答案及解析
—— Have you ever seen anything like that before？
---- ____.
| A．No，I never have seen anything like that before |
| B．No，never I have seen anything like that before |
| C．No，never have 1 seen anything like that before |
| D．No，I have seen anything like that before never |
高三英语单项填空简单题查看答案及解析
We’d say that never before ________ so moving a film as After Shock.
A．we had seen B．had we seen C．we have seen D．have we seen
高三英语单项填空简单题查看答案及解析
It is so cold here in Zhengzhou this winter that it seems as if we ______ in Iceland.
A. are B. have been C. were D. had been
高三英语单项填空中等难度题查看答案及解析
——How do you like the movie Kung Fu Panda？
——It’s so touching. I have never have seen ____ one.
| A．a wonderful | B．a more wonderful | C．a most wonderful | D．the most wonderful |
高三英语单项填空中等难度题查看答案及解析
_____, I have never seen anyone who’s as capable as John.
A. Now that I have traveled so much
B. As long as I have traveled
C. As I have traveled so much
D. Much as I have traveled
高三英语单项填空困难题查看答案及解析
— I’ve never seen you so rude!
— I _____ something I shouldn’t have, but I didn’t mean that．
A．have said B．had said
C．did say D．was saying
高三英语单项填空中等难度题查看答案及解析
— I’ve never seen you so rude!
— I _____ something I shouldn’t have, but I didn’t mean that.
A. have said B. had said
C. did say D. was saying
高三英语单项填空中等难度题查看答案及解析
— I’ve never seen you so rude!
— I _____ something I shouldn’t have, but I didn’t mean that．
A． have said B． had said
C． did say D． was saying
高三英语单项填空中等难度题查看答案及解析
If you are not any kind of a longtime A-list New Yorker celebrity like Woody Allen，chances are that you have never experienced，and will never experience-a meal in a legendary(神奇) Italian-American restaurant called Rao’s.
Rao’s，the East Harlem restaurant with a history of more than l00 years，is simply the toughest restaurant to get a reservation in the US, if not the world．Michelin three-star restaurants like elBulli in Spain，often ranked the world’s top restaurant，would sell out the second phone lines opened．But in the case of Rao’s，the phone lines never open．
There are about a dozen tables in the tiny restaurant, and each is spoken for, semi-permanently, as regulars have had their reservations for years, and when they can't use them，they often gift them to friends. The place is so small that the owners rarely have the flexibility to do favors even for people they know．
Since it is always busy，there has never been a need for publicity．The last remarkable national review of the restaurant came from The New York Times more than 35 years ago．It was already tough to get a table at Rao’s but reservations have been non-existent ever sincce the magic review．
According to a critic who is “very, very lucky to have dined at Rao’s a few times，”the experience rivals(堪比)the tasty food．There are no menus at Rao’s, and one of the owners will pull up a chair and run through the massive list of options, allowing people to have diner by mixing and matching nearly any ingredient(原料)with any classical Italian style of cooking. The place doesn’t take credit cards, isn’t open on weekends or for 1unch, and “at some point during your meal the one-room restaurant will almost unavoidably break out in song.” It is truly one of a kind，”the critic wrote．
1.Which is probably the best title for thistext?
A．A lucky critic． B．The best restaurant
C．A magic review． D．A legendary restaurant
2.Why does the author refer to elBulli in Spain in Paragraph 2?
A．To prove the long history of Rao’s．
B．To show the popularity of Rao’s．
C．To describe the service of Rao’s．
D．To attract customers to eat in Rao’s．
3.What was Rao’s like before The NewYork Times review?
A．Unique and attractive． B．Tough and greedy．
C．Terrible and unknown． D．Poor and hopeless．
4.Which of the following about Rao’s is true?
A．If yoh want to get a reservation in Rao’s, you’d have to phone ahead of time．
B．Rao’s history is much longer than that of elBulli in Spain．
C．It’s hard fo dine in Rao’s partly because it has a limited number of tables．
D．Only the most famous persons can have the chance to have lunch in Rao's．
5.We can conclude from the critic’s words that ．
A．Rao’s menus are specially designed for its regular diners
B．customers of Rao’s can use credit cards on weekends
C．the experience dining in Rao’s is as unforgettable as its food
D．diners in Rao’s are used to being disturbed by sudden noises
高三英语阅读理解中等难度题查看答案及解析