1 . These days, Fred’s huge skeleton (骨架) is exhibited in the Indiana State Museum. His tusks (长牙) were recently the subject of a research study tracing the life 13,000 years ago of mastodons, distant relatives of modern elephants.
By analyzing the chemical compounds (化合物) in Fred’s tusks, a team of researchers could construct a detailed account of his seasonal migration patterns. Josh Miller, a paleoecologist (古生态学家) at the University of Cincinnati, is one of the researchers studying Fred. “He has beautifully preserved bones and tusks, which provides a great opportunity for our research on his seasonal migration patterns,” Miller said.
Mastodons’ tusks generally grow in distinct layers, similar to the tree rings. As a result, the nutrients that build the layers of their tusks can tell us a lot about what they experienced. The team particularly focused their analysis on the variations in two elements in the layers: strontium (锶) and oxygen. The former is the key to understanding where Fred spent his life, while the latter tells us the season he was in any particular region. Then, with some statistical modeling, Miller and his team gained insight into the daily record of Fred’s behavior over ten thousand years ago.
The result indicated that Fred would have grown a lot when he was young. But there’s a year when his growth is reduced. “Probably like the modern male elephant, a male mastodon is just really obnoxious when growing up to be a bother and often arouses family members’ anger. At that point, the mom and aunts will essentially kick him out of the family.” Miller predicted.
After Fred set off to attend to himself, his tusks reflected where he travelled around. Based on the analysis, Fred would return to mate every summer in Northeastern Indiana, because his tusks started to show signs of injuries around this time. When competing for mates, mastodons get into huge battles with their own natural weapons sharp tusks. And that was exactly what brought Fred’s story to an untimely end.
1. What did Miller’s study mainly focus on?| A．Effective ways of tusk preservation. | B．Inner structure of Fred’s skeleton. |
| C．Possible tracks of Fred’s migration. | D．Special functions of mastodon tusks. |
| A．By analyzing nutrients in Fred’s bones. |
| B．By reviewing statistical records of previous studies. |
| C．By modeling data of chemical elements in Fred’s tusks. |
| D．By referring to the growth of tree rings to study Fred’s tusk layers. |
| A．He was killed by his opponents. | B．He reunited with his family later. |
| C．He was drawn to cross-species fights. | D．He was weak in living independently. |
| A．Geology. | B．Culture. | C．Education. | D．Science. |
2 . A Michigan farmer Bristle was digging with a backhoe (反铲挖土机) in one of his wheat fields when — bang — it struck a large bone.
Bristle contacted Fisher, a paleontology (古生物学家) professor at the University of Michigan. Fisher rushed to the farm and identified the bone as a fossil of an Ice Age mammoth (猛犸象). Since it was harvest season, Bristle gave Fisher and his students only one day to remove the rest of the fossils from the ground. The team found 20 percent of the animal’s bones, including its skull, tusks, pelvis, and shoulder blades as well as some teeth, ribs, and other bones.
The age of a mammoth can be determined by counting the rings in one of its tusks. Like the rings in a tree trunk, each ring stands for one year of a mammoth’s life. Fisher thinks that the bones are supposed to belong to male mammoth around forty years old. It was probably a rare hybrid of a woolly mammoth and a Colombian mammoth that lived between 11,700 and 15,000 years ago during the Pleistocene lee Age, when ice sheets covered much of Earth’s land.
The bones appeared to have been cut up and some of them were missing, leading Fisher to conclude that early humans must have killed the animal and stored its meat so they could return to it at a later time. Some other indications of human activity include a stone flake (薄片) that might have been from a cutting tool and the arrangement of the neck bones in order. If the mammoth had died naturally, its bones would have scattered randomly.
In the US, fossils found on private property belong to the owner of the land. However, Bristle donated the fossils to the University of Michigan for further study. Fisher hopes to display the bones at the University of Michigan Museum of Natural History, possibly combined with fiberglass models of bones from other Michigan mammoths to form a complete Mammoth skeleton (骨架).
1. Why was Fisher’s time limited to one day?| A．Because the mammoth was a small one. | B．Because it was easy to remove the bones. |
| C．Because it was the time of gathering crops. | D．Because Bristle was busy planting in the field. |
| A．By counting the bones. | B．By judging the living age. |
| C．By measuring the ice sheets. | D．By numbering the tusk rings. |
| A．How the mammoth died. | B．Where the missing meat was. |
| C．How the stone flake was made. | D．Whether the neck bones scattered. |
| A．To own the fossils. | B．To study the mammoth. |
| C．To complete the skeleton. | D．To promote the university. |
3 . Every day people joined archaeologists and artists in finding some of the year’s most dramatic discoveries. Below are some examples of 2023.
“Naughty pupils” — ancient punishment method resurfaces
Archaeologists discovered 18,000 ink-carved pieces of pottery — known as “ostraca” — at the site of Athribis early this year, and among them were hundreds of fragments (碎片) with a single symbol repeated front and back.
Those scribbles (潦草的文字) are evidence of “naughty pupils” being made to write lines, according to researchers at Germany’s University of Tuebingen. The fragments also included receipts, school texts, trade information and lists of names.
Van Gogh peers out in hidden portraits
There is one more known Van Gogh’s self-portrait in the world, and it was hidden behind a painting of a peasant woman. People made the discovery when they took an X-ray of one of his portraits from 1885 and discovered-the artist’s own image behind layers of cardboard and glue. While X-rays often reveal how artists changed their compositions, the full self-portrait of Van Gogh came as a huge surprise, who was known to reuse canvases (画布) to save money.
Another treasure collection from Sanxingdui
The Sanxingdui archaeological site has produced thousands of relics. The latest discovery, reported by Chinese state media in June includes 3,155 objects, a turtle shell-shaped box and a sacrificial altar among them. A team has been digging six places of the site, turning up more than 13,000 objects so far. Last year, the relics they uncovered included a golden mask, ivory artifacts (手工艺品) and a jade knife. The Sanxingdui culture still remains mysterious, as it left behind no written records or human remains, though many believe it to be part of the ancient kingdom of Shu, which ruled along the upper stream of the Yangtze River until it was conquered in 316 BC.
1. What made the researchers link the discovery with an ancient punishment?| A．Hundreds of fragment. | B．The repeated symbol. |
| C．The mark of ink. | D．Lists of names. |
| A．It was hidden behind a peasant woman. |
| B．The X-ray discovered the composition of the cardboard. |
| C．Van Gogh hid his self-portrait in this way to save money. |
| D．Van Gogh in the self-portrait looks outside. |
| A．An artificial altar. | B．A jade knife. |
| C．Human remains. | D．A turtle shell-shaped box. |
4 . Human faces cut into stone up to 2,000 years ago have again been found on a rocky area along the Amazon River in northern Brazil. The stone carvings (雕刻品) appeared as a result of a big drop in water levels because of dry weather in parts of northern Brazil. The water level had dropped to the lowest level in the history of the river.
“People had reported some of the stone carvings before during periods when water levels were low. But now a greater number have been identified. That will help researchers establish the history of the carvings, and more secrets of historical relics will come to light,” researcher Jaime de Santana Oliveira said recently.
One area shows smooth marks in the rock thought to be where natives once sharpened their tools such as arrows and spears before European settlers arrived.
“The carvings are prehistoric, or precolonial (殖民地时期前的). We can’t be sure of their precise date but based on the evidence of human living places of the area, we believe they are about 1, 000 to 2, 000 years old.” Oliveira said.
The rocky area is on the north shore of the Amazon River near the place where the Rio Negro River joins it.
Oliveira said the carvings were first seen in 2010, but this year’s drought has been more serious than earlier dry periods. The Rio Negro’s levels have dropped 15 meters since July, uncovering large areas of rocks and sand where there had been no beaches.
“This time we found not just more carvings, but the statue of a human face cut into the rock,” said Oliveira, who works for the Brazilian government’s National Historic and Artistic Heritage Institute. The organization watches the care of historic places in Brazil.
1. What plays a key role in finding the stone carvings?| A．People’s report. | B．Natural disaster. |
| C．High technology. | D．Researchers’ effort. |
| A．Explore the history of historical sites. | B．Move the valuable carvings to safety. |
| C．Discover more underwater stone carvings. | D．Make the carvings popular among visitors. |
| A．Fixed. | B．Exact. | C．Best. | D．Future. |
| A．The human face stone carvings. | B．The number of stone carvings. |
| C．The real value of stone carvings. | D．The place where stone carvings were found. |
On Feb 8, 2001, workers at a construction site in Jinsha village, Chengdu, found many pieces of ivory and jade and the hidden ruins of the capital of the ancient Shu Kingdom were brought
In 2005, the pattern was
China Before China,
The documentary
The crew spent months
The opening of a new exhibition building at the Sanxingdui Museum, in Guanghan, Sichuan province, made the place
For those who can not go to Guanghan, an immersive (沉浸式的) exhibition
The exhibition journey begins
More than 3,000 stone tools have been unearthed during the latest work at the Piluo site, a large-scale Paleolithic site
The Piluo site,
The latest stage, kicking off in July, was the third of its kind and covered about 150 square meters,
According to
The
9 . Stonehenge is hiding a secret: the source of one of its stones.
Researchers know that the prehistoric circle’s outer stones come from nearby areas in England. But even after a century of study, the Altar Stone near the center of Stonehenge remains difficult to understand.
The Altar Stone belongs to a group of Stonehenge building blocks known as the bluestones, which came from areas far from Stonehenge. Researchers have found that some of the bluestones come from as far as 225 kilometers away.
“It’s a massive job of transport,” says Richard Bevins, an earth scientist at Aberystwyth University in Wales. His team is looking for the source of the Altar Stone. Uncovering the stone’s origins could suggest which ancient groups of people contributed to the building.
Scientists have been working to find the rock’s origins since 1923. A report about the Altar Stone’s minerals back then suggested it might have come from a set of rocks in Wales near where other bluestones cane from. Bevins’ team decided to revisit the rock’s riddle with modern techniques.
In 2021, the team analyzed (分析) the Altar Stone’s chemical makeup using X-rays. The X-ray method showed that the Altar Stone has high levels of the element barium (钡). But the stone’s makeup didn’t seem to match the rocks in Wales.
In the new study, the team collected 58 samples (样本) from a wider area in England and Wales. Of the 58 sample stones, four had high barium levels similar to the Altar Stone. The team then compared the overall mineral makeup of those four stones with the Altar Stone. But none were a match.
“Maybe we’ve been looking in the wrong area, and maybe we’ve possibly been looking at rocks of the wrong age,” Bevins says, “It’s not clear exactly how old the Altar Stone is.” So scientists may need to consider stone sources that are younger than the ones they have looked at so far.
1. Where do the outer stones of Stonehenge come from?| A．Wales, | B．Scotland. | C．Ireland. | D．England. |
| A．Its sample. | B．Its finding. | C．Its preparation. | D．Its application. |
| A．Date the Altar Stone. | B．Make the 1923 report public. |
| C．Sell the sample stones. | D．Move their office to the UK. |
| A．It looks pretty young. | B．It was built by the locals,. |
| C．Its origin remains unknown. | D．Its makeup is the same as others’. |
Originally unearthed in the late 1920s, the Sanxingdui Ruins have been regarded as one of the world’s greatest archaeological
One iconic (标志性的) exhibit is the four-meter-tall bronze sacred tree,
Divided into three themed areas, the exhibition hall makes use of a range of new technologies
