游客
题文

Deception (骗术)is something that people do all the time ,and it plays an important role in military (军事的)strategy. Now some researchers are trying to figure out how to get robots to do it, by looking at the behavior of squirrels and birds.
At Georgia Tech, a team led by Ronald Arkin , a professor at the School of interactive Computing, studied the literature on squirrels hiding their acorns (橡果).Squirrels will hide their food m a certain place, but when they see other squirrels trying to steal from them, they attempt to fool the thieves by running to a fake location.
Ronald Arkin and his Ph. D. student Jaeeun Shim used that as a model for robot behavior. They programmed the robot into tricking a “predator (捕食者)” machine by doing what εi squirrel does: showing the enemy a false location for an important resource.
The team also looked at how other animals in this case,a species of bird called Arabian babbler~ drive off predators. A babbler will make an alarm call when they see a predator and other babblers will join the bird and make more calls. They then surround the predator, all the while flapping (拍打)wings and making noises. The babblers don’t ever actually fight the animal they want to drive off; they just make enough noises and flaps around enough so that it seems that attacking a babbler isn’t worth it
They found that the deception works when the group reaches a certain size—essentially, when enough birds arrive to convince the enemy that it’s best to back off . Davis modeled that behavior in software using a military scene and found that it worked even if the group didn’t have the firepower to confront the enemy directly.
The military is interested in this because a robot that can fool an opponent is a valuable tool. It could lead an enemy down a fake trail or make itself look more dangerous than it actually is.
Why does the military want to take advantage of squirrels’trick?

A.It can reduce the use of firepower to confront the enemy.
B.It can fool the enemy into believing it is more dangerous.
C.It can lead the enemy in a wrong direction to avoid losing resources.
D.It can scare the enemy away who wants to destroy the acorns.

Which of the following is NOT the way Arabian babblers drive off predators?

A.One bird makes an alarm call and other birds will join it
B.They fight the enemy bravely face to face.
C.They make noises and flaps around the predator.
D.They force the predator aware that it isn't worthwhile to attack.

What is the main idea of the passage?

A.Animals' behaviors are researched to be applied to the study of military robots.
B.Robots, fooling tricks are applied to the study of animals’behaviors.
C.Birds and squirrels are the animals that are good at deception.
D.Researchers are interested m animals’military-related behaviors.
科目 英语   题型 阅读理解   难度 中等
登录免费查看答案和解析
相关试题

.
第二部分阅读理解(共分两节,满分45分)
阅读理解(共20小题;每小题2分,满分40分)
阅读下列短文,从每题所给的四个选项A、B、C、D中,选出最佳选项,并在答题卡上将该项涂黑。
Nate suffered a hard blow when he lost his job. His boss had spoken rudely, “Your services are no longer needed.”Nate left the building filled with despair. By the time he reached home, he was in deep sadness. When he entered his house, he blurted out to his wife Sophia,“I lost my job. I am a complete, utter failure.”A tense silence followed. Then a smile crept across Sophia’s face.“What great news!”she responded.“Now you can write the book you have always wanted to write.”
“But I have no job and no prospect of a job,”he objected, completely without hope. “If I struggle to be an author, then what will we live on? Where will the money come from?”
Sophia took her husband by the hand and led him to the kitchen. Opening a drawer, she took out a box that was full of cash.“Where on earth did you get this?” Nate gasped.“To whom does it belong?”
“It’s ours!” Sophia replied.“I always knew that one day you would become a great writer if only you were given the chance. From the money you gave me for housekeeping every week, I have saved as much as I could so you would have your chance. Now there is enough to last us a whole year.” ^*
What a surprise! What encouragement! What a wife! The unemployed husband did concentrate on writing that year, and the novel he wrote became a literary masterpiece(文学名著). The book is The Scarlet Letter. Sophia had an even greater achievement, and she turned Nathaniel Hawthorne from a poor clerk into a world famous master.
41. What would be the best title for the passage?
A. Sophia’s achievement B. A great writer’s struggle to success
C. Great encouragement in hard times D. Failure is the mother of success
42. The underlined sentence in the first paragraph seems to tell us that __________.
A. Sophia was very disappointed to hear the news
B. Nate was too sad to speak any more
C. Sophia was thinking of how to encourage Nate
D. both husband and wife had no idea what to do
43. Sophia saved money because __________.
A. she knew her husband would lose his job one day
B. she knew their life would be in difficulty
C. she was very careful with money
D. she was trying to help her husband in every possible way
44. From the passage we learn that Sophia was __________.
A. kind and brave B. careful and encouraging
C. helpful and warm-hearted D. clever and determined

.
Among the four skills in learning English, which of these is the “Odd-Man-Out”? The answer is speaking. The other three you can do alone on your own. But you can't really speak alone! Speaking to yourself can be “dangerous” because men in white coats may come and take you away !
Where can you find people to speak English? And how can you practise speaking when you are alone? At school if you pay to go to a language school, you should use the chance to speak .If your teacher asks you to speak in pairs or groups with other students, try to say as much as possible. Don't worry about your mistakes. Just speak!
Conversation Clubs Many cities around the world have conversation clubs where people can exchange one language for another . Look in your local newspaper to find a conversation club near you .They are usually free although some may charge a small entrance fee.
Shopping Even if you don't want to buy anything ,you can ask questions about products that interest you in a shop. “How much does this cost?” “Can I pay by cheque?” Often you can start a real conversation—and it costs you nothing!
Cafe and Bars There are often American, Britain, Irish and Australian bars in many large cities .If you can find one, you'll probably meet many people speaking English as a first or second language.
Language is all around you Everywhere you go, you find language .Shop names, street names ,advertisements ,notices ,and car numbers....When you walk down the street , practice reading the words and numbers that you see .Say them to yourself .It's not exactly a conversation ,but it will help you to “think” in English .But don't speak too loud!
Songs and Video Repeat the words of an English-language song singing with the music until it becomes automatic. It's good practice for your memory and for the mouth muscles that you need for English.
Above all, speak as much as possible! Make as many mistakes as possible! When you know that you have made a mistake, you know that you have made progress!
57.What does “Odd-Man-Out” probably mean according to the passage?
A. Someone or something appearing different from others.
B. Someone or something standing out of the group.
C. Someone or something arranged in pairs.
D. Someone or something easily mistaken for another.
58.What might happen if you speak to yourself loudly in public?
A. The police will take you away and punish you.
B. The doctors will force you to stay in hospital.
C. You will have to pay to escape being punished.
D. You will be forbidden to be member of the club.
59.Why does the writer say “Make as many mistakes as possible”? Because _______.
A. everyone will make mistakes in learning English
B. everyone will meet people speaking English with some mistakes
C. making mistakes is a must in making progress in learning English
D. making mistakes can make one realize the importance of speaking
60.According to the passage, which way is not likely to be accepted by English beginners?
A .Recite poems loudly along the riverside.
B. Listen to some English pop songs and video.
C. Find an Englishman to speak English with.
D. Take to the TV showing programmes at home.

.
It is natural that children are curious about the world around them. For example, they want to know how their hearts beat. They want to know why the ocean water tastes salty.
  As children grow up, they become curious about different kinds of things. When they are babies, they are interested in the parts of their bodies and in the smiles of their mothers. They become interested in the physical world around them: the plants, the animals, the sky. Later, they become interested in the things that people have made: wheels, bicycles, cars. And when they are adults, their curiosity continues. Sometimes this curiosity leads to a career (生涯、职业) in science.
  Scientists spend their lives trying to find out about the world.Those who work with the earth sciences study the earth, the oceans, and the skies. Other scientists who study living things work with the biological sciences. A third group of scientists study the physical sciences, e. g. physics, chemistry .
  These scientists have already discovered a lot about our world.For example, they tell us why your heart beats faster when you run. They say that when you are quiet, your heart normally beats sixty-five or seventy-five times a minute. Your heart is a pump (泵) that pumps blood to all parts of the body. The blood carries oxygen and nutrition. When you run, your muscles work very hard and use the nutrition that the blood carries to them. The muscles need oxygen, too . So your brain sends a signal to the heart. The signal means that the muscles need more nutrition and oxygen. Then the heart beats fast and sends blood quickly to the muscles. It may beat 90 to 140 times a minute.
  Of course, scientists cannot answer all of our questions. If we ask, “Why does the ocean water taste salty” scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask , “What happens to the salt in the ocean? The ocean does not get saltier every year.” Scientists are not sure about the answer to this question.
  We know a lot about our world, but there are still many answers that we do not have, and we are curious.
53.According to the passage, which of the following statements is true?
  A.People are curious in the same way.
  B.People in different countries are interested in different things.
  C.Men and women are curious about different things.
  D.People of different ages are interested in different things
54.Scientists who work with the biological sciences study ____.
A.the earth , the oceans and the sky B. man-made things
C.plants and animals D. ocean water
55.When you run, your muscles need ____.
A.more nutrition and oxygen B.more signals C.more salt D.water
56.A rock cracks _____.
A.in wet regions B.in dry regions
C.at very high or very low temperaturesD.when salty water falls in

.
When coal is burned in a boiler, two kinds of ash by-products are produced: a heavy bottom ash and a fine-as-powder fly ash. About 10 to 15 percent of the coal by-product is bottom ash which is used like sand on streets and highways covered with ice, and also on highways as paving material.
It is the fly ash, however, that is receiving much attention. Once considered a waste, fly ash is now regarded as a natural resource in the United States. It can be placed in some lower places, where it is compacted(压实) and covered with soil, for the seeds of various grasses and plants to be placed in the soil to make the land productive.
Fly ash may be added to concrete (混凝土)to build roads and other kinds of buildings, taking the place of the cement(水泥) up to 20 percent. As a by-product of burned coal, fly ash requires no extra energy to be produced, while cement production requires great amounts of energy.
Besides, the technology is able to take out some useful minerals from the fly ash, which is still a very expensive process today. But the time may come when it is cheaper to take out these products from ash than to mine new supplies.
49. The bottom ash can be put on icy streets________.
A. in order to rebuild them B. in order to make them colorful
C. so that people can walk on them D. so that cars can run faster
50. The fly ash can be used to________.
A. grow various plants B. take the place of soil
C. cover productive land D. make more productive land
51. Which of the following is right?
A. To produce fly ash, some extra coal is to be burned.
B. Fly ash is made while producing cement.
C. It takes less energy to produce fly ash than cement.
D. Fly ash is a costless by-product.
52. The word “mine” in the last sentence of the passage means_______.
A. to buy things from other countries
B. to search for useful materials in the mountains
C. to dig deeply into the ground to get useful materials
D. to take out certain materials from other things

.
Is there anything more important than health? I don’t think so. “Health is the greatest wealth(财富),” wise people say. You can’t be good at your studies or work well when you are ill.  
If you have a headache, toothache, backache, earache or bad pain in the stomach, if you complain of a bad cough, if you run a high temperature and have a bad cold, or if you suffer from high or low blood pressure, I think you should go to the doctor.  
The doctor will examine your throat, feel your pulse, test your blood pressure, take your temperature, sound your heart and lungs, test your eyes, check your teeth or have your chest X-rayed. After that he will advise some treatment, or some medicine. The only thing you have to do is to follow his advice.  
Speaking about doctor’s advice, I can’t help telling you a funny story.  
An old gentleman came to see the doctor. The man was very ill. He told the doctor about his weakness, memory loss and serious problems with his heart and lungs. The doctor examined him and said there was no medicine for his disease. 
He told his patient to go to a quiet place for a month and have a good rest. He also advised him to eat a lot of meat, drink two glasses of red wine every day and take long walks. In other words, the doctor advised him to follow the rule: “Eat at pleasure, drink with measure and enjoy life as it is.” The doctor also said that if the man wanted to be well again, he shouldn’t smoke more than one cigarette a day.  
A month later the gentleman came into the doctor’s office. He looked cheerful and happy. He thanked the doctor and said that he had never felt a healthier man.  
“But you know, doctor,” he said, “it’s not easy to begin smoking at my age.”
45. The writer thinks that_____________
health is more important than wealth
B. work is as important as studies
C. medicine is more important than pleasure
D. nothing is more important than money
46. The underlined part means “__________”.
he was feeling better than ever B. he wasn’t a healthy man
C. he was feeling worse than before D. he will be well again
47. From the last sentence of the passage, we learn the man__________before the doctor told him not to smoke more than one cigarette a day.
A. was a heavy smoker B. didn’t smoke so much
C. didn’t smoke D. began to learn to smoke
48. Which of the following is NOT true?
A. The doctor usually tests his/her blood pressure when a person is ill.
B. The man told the doctor he couldn’t remember things.
C. The man thanked the doctor.
D. The man didn’t follow the doctor’s advice.

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号