When different species of birds flock (聚集) together, their flight formations are determined by social dynamics both between and within species.
New research from the Universities of Cambridge and Exeter reveals for the first time that, contrary to current models used to explain the movement of flocks, the differences between bird species and social relationships between individuals play a critical role in determining the dynamics of mixed-species flocks.
The unified(群集) behaviour of bird flocks has puzzled scientists for hundreds of years. One naturalist from the turn of the century even suggested telepathy(心灵感应)may be involved. There have since been more logical explanations, including mathematical models that show that repeated interactions among individuals following simple rules can generate coordinated (协同的)group movements. However, these models usually rely on the assumption that individuals within groups are identical and interact independently, which may not reflect reality.
Jolle Jolles, a PhD student at the University of Cambridge's Department of Zoology and author of the paper, said：“Spectacular collective behaviour can be found in a large range of animal species, and we now know that often these complex coordinated group movements may be the result of individuals following simple rules. However, rarely are the individual characteristics and social relationships within them taken into account. Our research highlights that these striking displays of group behaviour are much more complex.”
By analysing high-resolution photographs of mixed flocks of rooks and jackdaws (both from the corvid family), the researchers found that rather than individuals interacting in a consistent fashion throughout the flock, interactions depended on social dynamics between the different species as well as relationships within a species.
The researchers discovered that birds prefer to fly close to members of their own species, and that the larger and more dominant rooks take the lead by flying near the front of flocks. Additionally, the lifelong, monogamous(一妻一夫制的)pair bonds that are characteristic of both species seem to be reflected in flight, as birds often fly particularly close to a single, same-species partner.
Dr Alex Thornton, principal investigator of the Cambridge Jackdaw Project, now at the University of Exeter and author of the paper, said: “Together, our findings demonstrate that to understand the structure of groups — such as bird flocks — we need to consider the characteristics and relationships of the individuals within them.”The underlined word “generate” means ______.
| A．set down | B．take away |
| C．bring about | D．give up |
According to Jolle Jolles, what are seldom considered about coordinated group movement?
| A．Individual characteristics and social relationship between them |
| B．Repeated interactions among individuals and social dynamics |
| C．Telepathy and social relationship between them |
| D．The structure of groups and the varieties of species |
Birds may prefer to fly the closest to _____ .
| A．the largest one | B．the most dynamic one |
| C．the lifelong partner | D．the friendly partner |
What is the main idea of the passage?
| A．How birds interact in simple rules. |
| B．How birds of different feathers flock together. |
| C．Why birds show preference to flocking. |
| D．Why birds display the characteristics. |
C
Some experts feel that cars are certain to fall into disuse. They see a day in the not-too-distant future when all cars will be deserted and made useless. Other experts, however, think the car is here to stay. They hold that the car will remain a leading means of city travel in the foreseeable future.
The car will undoubtedly change greatly over the next 30 years. It should become smaller, safer, and more practical, and should not be powered by the gas engine. The car of the future should be far more pollution-free than present types.
Unless changes take place in the power system, the car in the future will still be the main problem in city traffic jams. One suggested solution to this essential problem is the automated (自动的) system, which seems to hold water.
When the car enters the highway system, a small arm will drop from the car and connect with a rail, which is similar to those powering subway trains electrically. Once joined to the rail, the car will become electrically powered from the system, and control of the car will pass to a central computer. The computer will then monitor all the car’s movements. The driver will use the telephone to dial instructions about his position and the place he heads for into the system. The computer will find the best way and reserve space for the car all the way to the correct exit from the highway. The driver will be free to relax and wait for the call that will warm him of his coming exit. It is believed that an automated highway will be able to deal with 10,000 cars per hour, compared with the 1,500 to 2,000 cars that can be carried by a present-day highway.
48. What is the main concern of the author of the passage?
A. How to make cars pollution-free. B. How to make cars smaller and safer.
C. How to solve the problem of train jam. D. How to develop an automated subway system.
49. We can infer from this passage that __________.
A. the car connected to the rail on the highway will be powered by electricity.
B. The lack of oil is forcing people to find new means to power automobiles.
C. The driver under the system will be told where to get out of the highway.
D. The future car will become larger, faster, prettier and less expensive.
50. What provides cars with electric power in an automated highway system?
A. An engine. B.A rail.C. A computer controller. D. A small arm.
51. Which of the following statements is true according to the passage?
A. The driver puts his information in the system by email.
B. The new system can deal with 10 times as many cars as the present one.
C. After entering the automated system, the driver needs to do nothing but relax.
D. Some experts are not confident of the future, while the view of the author is hopeful.
B
Mary went out at night. She never forgot the night when she met a robber many years ago.
That evening, she was invited to a birthday party which lasted until two o’clock i
n the morning. Without company Mary walked along the quiet street.
Suddenly from the shadow of a dark building a tall man with a sharp knife in his right hand ran out at her. “Good evening, lady,” the man said in a low voice, “I don’t think you wish to die here.”
“What do you want?” Mary asked.
“Your earrings （耳环）.Take them off!” Slowly Mary’s eyes looked down. She tried to cover her necklace with the collar（领子）of her overcoat while she used the other hand to take off both of her earrings, and then she quickly threw them on the ground.
“Take them and let me go.” she said. The robber looked at her only feeling uncertain. He saw the girl didn’t care for the earrings at all, only trying to protect the necklace. He realized the necklace would cost more. So he said, “Give me your necklace.”
“Oh, sir. It’s not worth much. Please let me keep it.”
“Stop rubbish. Quick!”
With shaky hands, Mary took off her necklace. As soon as the robber disappeared, she picked up her earrings and ran as fast as she could to one of her friends.
The earrings cost 480 pounds and the necklace the robber had taken away cost only six pounds ten shillings.
44. Mary never forgot that night because ___________.
A. she was robbed of her necklace B. she was robbed, but she fooled the robber
C. she had a good time at the party D. she lost her earrings
45. The party ___________.
A. didn’t end at two B. ended before two C. lasted two hours D. was over at two
46. She tried to protect the necklace because ___________.
A. she didn’t want to lose it B. it was more important
C. she liked it better than earrings D. she would rather have the necklace lost
47. The story tells us that she was a ___________girl.
A. clever and brave B. clever and beautiful C. brave and careful D. clever and careful
三、阅读理解（15*2=30分）
A
Everyone should learn to apologize. Apology language do work. Have you ever tried to apologize, only to be refused? It may be that you were offering partial apology in a “language” that was foreign to your listener. The five languages of apology include:
Apology Language 1: “I am sorry.”
List the hurtful effects of your action. NOT “I am sorry if…”, but “I am sorry that…”. You might ask if they want to add any points that you have not recognized.
Apology Language 2: “I was wrong.”
Name your mistake and accept fault. Note that it is easier to say “You are right ” than “ I am wrong”, but the latter carries more weight.
Apology Language 3: “What can I do to make it right ?”
How are you now? How shall I make amends to you? How can I RESTORE YOUR CONFIDENC that I love you even I was so hurtful to you?
Apology Language 4: “I WILL TRY NOT TO DO THAT AGAIN.”
Engage in problem-solving. Do not make excuses for yourself such as: “Well my day just so …” Instead, offer what you will change to prevent yourself putting them in the same bad situation again.
Apology Language 5: “Will you please forgive me?”
Be patient in seeking forgiveness. They may need some time or greater clarification of your input from Apology Languages 1-4.
Finally, your apology may not be accepted, but at least you know that you have been faithful in offering a sincere olive branch of peace.
41. When offerring an apology, which of the following dose the author prefer?
A. “You are right .”B. “I am sorry if …”
C. “I am wrong.” D. “Well , my day was just so…”
42. In the last paragraph ,the author tells us even if your apology may not be accepted , at least __________ .
A .It is not your fault any more. B. Your mind will be at peace.
C. your friend will make peace with you. D. your apology is true to your heart.
43 .What does the passage mainly talk about?
A. Five tips for apology that work. B. Five ways of refusing apology.
C. The function (功能) of apology language. D. The importance of apology language
E
Paynes Prairie
Have you ever heard of Paynes Prairie? It is one of the most important natural and historical areas in Florida. Paynes Prairie is located near Gainesville. It is large, 21 000 acres. This protected land is called a preserve. The Florida Park Service manage the preserve.
The Paynes Prairie basin was formed when limestone dissolved and the ground settled. It is covered by marsh(沼泽)and wet prairie vegetation. There are areas of open water. During brief periods it has flooded enough to be considered a lake. Except for that, the basin has changed little through time.
Man has lived on Paynes Prairie a very long time. He lived there as far back as 10000 B. C. At one time, the Seminoles lived there. The prairie is thought to have been named after King Payne, a Seminole chief. During the late 1600s, the largest cattle ranch in Florida was on Paynes Prairie. Today, Paynes Prairie is preserved land. It is occupied by visitors and Florida Park Service employees.
William Bartram visited Paynes Praire. Bartram was the first person who described nature through personal experience as well as scientific observation. He lived 200 years ago. He visited Paynes Prairie in 1774. At that time he described it. He called Paynes Prairie the "great Alachua Savannah."
Most of the animal life, which Bartram described, is still here. A large number of sand hill cranes, hawks and waterfowl are here in winter. The animal diversity is increased by the presence of pine flatwoods, hammock, swamps and ponds.
The Paynes Prairie Preserve State Park is open year round. The Florida Park Service works hard so that the park will appear as it did in the past. It offers many opportunities for recreation. At the park you can camp and picnic. You can hike and bike. You can boat and fish. You can ride on horse trails. And you can see lots of nature and wildlife. You can see Florida as it was in the early days.
Paynes Prairie is a part of our Florida history. It is an example of our Florida natural resources. It is a place for recreation. Paynes Prairie is an important experience of the Real Florida.
57. How was the Paynes Prairie basin formed?
A. By the Seminole Indians.
B. By the Florida Park Service.
C. From dissolved limestone and the ground settling.
D. From lots of flooding and wet prairie vegetation.
58. The underlined word "diversity" means “_______.”
A. variety B. society C. population D. area
59. All of the following are true EXCEPT that _______.
A. Paynes Prairie has changed little through time
B. Paynes Prairie is covered by wet prairie grasses
C. there used to be a big cattle farm on Paynes Prairie
D. William Bartram was the first person~ to visit Paynes Prairie
60. The purpose of the passage is to_______.
A. call on people to protect wildlife
B. attract people to this preserved park
C. show you the formation of Paynes Prairie
D. introduce the recorded history of Paynes Prairie
D
We can offer you a place at one of the best universities in Britain. We’ll provide you with a choice of 150 first class courses developed especially to enable you to study in your own time, backed by the Open University’s own special study method-OU supported open learning.
We’ll give you the support of a personal teacher, and the chance to meet your fellow students. You can take one-off courses, diplomas (毕业证), a degree or a postgraduate degree(文凭). Subjects available include: computing, business management, technology, modern languages, social sciences, English law, arts, science, mathematics, education and health﹠social welfare.
Did you know?
The OU is in the top 15% of all UK universities for teaching quality
25% of all British MBAs* come from the OU
Over 30,000 employers have offered chances to their staff on OU courses
40,000 OU students are on line from home
There are 9 month courses and new diplomas as well as degrees
AMBA Accredited
Whether you want to study to improve your jobs or for your own personal interest, there’s almost certainly a course for you. If you haven’t studied for a while, we’ll help you get started. No previous training or degrees are required, you just need a lively power of learning and a willingness to learn. It’s real value for money and you can pay by monthly payments.
Open University course materials are of the highest quality and come in a variety of forms, including video and audio tapes as well as texts. The OU leads the world in its use of new technology for learning. A number of courses provide source material on CD Rom. What else can the Open University offer you? The best way to find out is to use the coupon below or phone us today.
|