Fossil by fossil, the story of the birds becomes clearer. It is now well established that modern birds are actually a group of dinosaurs, which survived a crash between the earth and a small planet 66m years ago. This impact wiped out the rest of the dinosaur world, along with a lot of other creatures.
Recently a paper, published in Nature, has released the details of a fossil, which those studying it believe provides our earliest view of what modern birds were like during the initial stages of their evolutional history. The fossil in question is called Asteriornis maastrichtensis. As its name suggests, the rock containing it was dug from deposits(沉积层)found near Maastricht. These deposits are between 66.8m and 66.7m years old.
This particular rock interested palaeontologists(古生物学家)because it included visible leg bones that looked as though they belonged to a bird. Such ancient fossils are rare, so instead of chancing their arms by using physical or chemical methods to explore the rock for more remains,Daniel Field of Cambridge University and his colleagues employed a CT scan, a process more familiar to most people as a medical-scanning technique. The result, an image of the animal’s skull with false colours added to clarify which bits are which, can be seen in the picture.
Asteriornis maastrichtensis does indeed turn out to be a member of the modern birds. Specifically, it is part of the Galloanserae, which includes both land fowl(家禽),such as chickens and its relatives, and modern waterfowl, like ducks and the like. The skull of Asteriornis maastrichtensis exhibits features of both groups, so it most probably predates the division between them. And its discovery in Europe opens up the debate about whether modern birds originated in the southern part of the earth, as has been proposed.
As to what it looked like when alive, the animal’s left upper leg, its best-preserved bone besides those of its skull, suggests Asteriornis maastrichtensis was a long-legged creature that marched around. This, and evidence that the rock it was preserved in was originally part of a fossil shoreline,has led to reconstructions of modern waterfowl.
Asteriornis maastrichtensis shows that a single fossil can help to nail down previously uncertain dates. The age of the fossil, in fact, suggests that those previous estimates, based on so-called molecular clocks(分子钟),might have overestimated how early the modern birds arose.Based on the discovery of Asteriornis maastrichtensis, the smart money is now on the modern birds as a group being only a little older than the dinosaur-killing impact itself.
1. What can we learn from the first two paragraphs?| A．The details of the fossil are still in doubt. |
| B．The deposits were named after the fossil. |
| C．The crash caused the extinction of dinosaurs. |
| D．The fossil is seen as the oldest modern bird skull. |
| A．It attracts palaeontologists as a rare ancient species. |
| B．It can present the whole picture of modern waterfowl. |
| C．It allows researchers to confirm where modern birds emerged. |
| D．It may be the common ancestor of modern chickens and ducks. |
| A．fossils promote the accuracy of historical dates |
| B．it’s not wise to dig the deposits for more remains |
| C．we can’t trust fossils more than molecular clocks |
| D．more investment should be made to study fossils |
2 . Sometimes it’s hard to let go. For many British people, that can apply to institutions and objects that represent their country’s past-age-old castles, splendid homes… and red phone boxes.
Beaten first by the march of technology and lately by the terrible weather in junkyards (废品场), the phone boxes representative of an age are now making something of a comeback. Adapted in imaginative ways, many have reappeared on city streets and village greens housing tiny cafes, cellphone repair shops or even defibrillator machines (除颤器).
The original iron boxes with the round roofs first appeared in 1926. They were designed by Giles Gilbert Scott, the architect of the Battersea Power Station in London. After becoming an important part of many British streets, the phone boxes began disappearing in the 1980s, with the rise of the mobile phone sending most of them away to the junkyards.
About that time, Tony Inglis’ engineering and transport company got the job to remove phone boxes from the streets and sell them out. But Inglis ended up buying hundreds of them himself, with the idea of repairing and selling them. He said that he had heard the calls to preserve the boxes and had seen how some of them were listed as historic buildings.
As Inglis and, later other businessmen, got to work, repurposed phone boxes began reappearing in cities and villages as people found new uses for them. Today, they are once again a familiar sight, playing roles that are often just as important for the community as their original purpose.
In rural areas, where ambulances can take a relatively long time to arrive, the phone boxes have taken on a lifesaving role. Local organizations can adopt them for l pound, and install defibrillators to help in emergencies.
Others also looked at the phone boxes and saw business opportunities. LoveFone, a company that advocates repairing cellphones rather than abandoning them, opened a mini workshop in a London phone box in 2016.
The tiny shops made economic sense, according to Robert Kerr, a founder of LoveFone. He said that one of the boxes generated around $13,500 in revenue a month and cost only about $400 to rent.
Inglis said phone boxes called to mind an age when things were built to last. “I like what they are to people, and I enjoy bringing things back,” he said.
1. The phone boxes are making a comeback ______.| A．to form a beautiful sight of the city |
| B．to improve telecommunications services |
| C．to remind people of a historical period |
| D．to meet the requirement of green economy |
| A．They were not well-designed. | B．They provided bad services. |
| C．They had too short a history. | D．They lost to new technologies. |
| A．their new appearance and lower prices | B．the push of the local organizations |
| C．their changed roles and functions | D．the big funding of the businessmen |
3 . Freedom and Responsibility
Freedom’s challenge in the Digital Age is a serious topic. We are facing today a strange new world and we are all wondering what we are going to do with it.
Some 2,500 years ago Greece discovered freedom. Before that there was no freedom. There were great civilizations, splendid empires, but no freedom anywhere. Egypt and Babylon were both tyrannies, one very powerful man ruling over helpless masses.
In Greece, in Athens, a little city in a little country, there were no helpless masses. And Athenians willingly obeyed the written laws which they themselves passed, and the unwritten, which must be obeyed if free men live together. They must show each other kindness and pity and the many qualities without which life would be very painful unless one chose to live alone in the desert. The Athenians never thought that a man was free if he could do what he wanted. A man was free if he was self-controlled. To make yourself obey what you approved was freedom. They were saved from looking at their lives as their own private affair. Each one felt responsible for the welfare of Athens, not because it was forced on him from the outside, but because the city was his pride and his safety. The essential belief of the first free government in the world was liberty for all men who could control themselves and would take responsibility for the state.
But discovering freedom is not like discovering computers. It cannot be discovered once for all. If people do not prize it, and work for it, it will go. Constant watch is its price. Athens changed. It was a change that took place without being noticed though it was of the extreme importance, a spiritual change which affected the whole state. It had been the Athenian’s pride and joy to give to their city. That they could get material benefits from her never entered their minds. There had to be a complete change of attitude before they could look at the city as an employer who paid her citizens for doing her work. Now instead of men giving to the state, the state was to give to them. What the people wanted was a government which would provide a comfortable life for them; and with this as the primary object, ideas of freedom and self-reliance and responsibility were neglected to the point of disappearing. Athens was more and more looked on as a cooperative business possessed of great wealth in which all citizens had a right to share.
Athens reached the point when the freedom she really wanted was freedom from responsibility. There could be only one result. If men insisted on being free from the burden of self-dependence and responsibility for the common good, they would cease to be free. Responsibility is the price every man must pay for freedom. It is to be had on no other terms. Athens, the Athens of Ancient Greece, refused responsibility; she reached the end of freedom and was never to have it again.
But, “the excellent becomes the permanent,” Aristotle said. Athens lost freedom forever, but freedom was not lost forever for the world. A great American, James Madison, referred to: “The capacity (能力) of mankind for self-government.” No doubt he had not an idea that he was speaking Greek. Athens was not in the farthest background of his mind, but once man has a great and good idea, it is never completely lost. The Digital Age cannot destroy it. Somehow in this or that man’s thought such an idea lives though unconsidered by the world of action. One can never be sure that it is not on the point of breaking out into action only sure that it will do so sometime.
1. People believing in freedom are those who ________.| A．regard their life as their own business |
| B．seek gains as their primary object |
| C．behave within the laws and value systems |
| D．treat others with kindness and pity |
| A．The Athenians refused to take their responsibility. |
| B．The Athenians no longer took pride in the city. |
| C．The Athenians benefited spiritually from the government. |
| D．The Athenians looked on the government as a business. |
| A．Athens would continue to be free. |
| B．Athens would cease to have freedom. |
| C．Freedom would come from responsibility. |
| D．Freedom would stop Athens from self-dependence. |
| A．Freedom can be more popular in the digital age. |
| B．Freedom may come to an end in the digital age. |
| C．Freedom should have priority over responsibility. |
| D．Freedom needs to be guaranteed by responsibility. |
4 . The Domestication（驯化）of Cats
For centuries, the common view of how domestication had occurred was that prehistoric people, realizing how useful it would be to have animals kept for food, began catching wild animals and breeding（繁殖）them. Over time, by allowing only animals with “tame”（驯养）characteristics to produce their babies, human beings created animals that were less wild and more dependent upon people. Eventually this process led to the domestic farm animals and pets that we know today, having lost their ancient survival skills and natural abilities.
Recent research suggests that this view of domestication is incomplete. Prehistoric human beings did catch and breed useful wild animals, but specialists in animal behavior now think that domestication was not simply something people did to animals—the animals played an active part in the process. Wolves and wild horses, for example, may have taken the first steps in their own domestication by hanging around human settlements, feeding on people’s crops and getting used to human activity. The animals which were not too nervous or fearful to live near people produced their babies that also tolerated humans, making it easier for people to catch and breed them.
In this version, people succeededin domesticating only animals that had already adapted easily to life around humans. Domestication required an animal that was willing to become domestic. The process was more like adancewith partners than a victory of humans over animals.
At first glance, the laming of cats seems to fit nicely into this new story of domestication. A traditional theory says that after prehistoric people in Egypt invented agriculture and started farming, rats and mice gathered to feast on their stored grain. Wildcats, in turn, gathered at the same places to hunt and eat the rats and mice. Over time, cats got used to people and people got used to cats. Some studies of wildcats, however, seem to call this theory into question. Wildcats don’t share hunting and feeding areas, and they don’t live close to people. Experts do not know whether wildcats were partners in their own domestication. They do know that long after people had acquired domestic dogs, sheep and horses, they somehow acquired domestic cats. Gradually they produced animals with increasingly tame qualities.
1. What is suggested in recent research?| A．Animals were less afraid than thought. |
| B．Animals had an active role in their domestication. |
| C．Wolves and horses were the first to be domesticated. |
| D．Domestication meant something people did to animals. |
| A．animals and humans were close |
| B．control over animals was easy |
| C．animals were independent of humans |
| D．domestication was like a game |
| A．Other cats. | B．Warmth. |
| C．Humans. | D．Food |
| A．Cats were not friendly to people. |
| B．Cats were not as fierce as wolves. |
| C．Cats had the characteristic of independence. |
| D．Cats showed cleverness when they were hunting. |
