1 . 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 a Germany’s University of Tuebingen. The fragments also included receipts, school texts, trade information and lists of names.
Van Gogh peers out in hidden portrait
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 canvase(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 led to the researchers’ conclusion about the fragments?| A．The repeated symbol. | B．Trade information. |
| C．Lists of pupils’ names. | D．The mark of ink. |
| A．To keep away from X-rays. |
| B．To save money. |
| C．To make his works more mysterious. |
| D．To help people find his composition. |
| A．A jade knife. | B．A golden mask. |
| C．A written record. | D．A turtle shell-shaped box. |
2 . Scientists have solved a puzzle about modern humans, after research showed that a famous skull of a human ancestor found in South Africa is a million years older than experts thought. This discovery has changed what we know of human history.
The skull, which scientists have named “Mrs Ples”, is from an ape-like human relative from a species called Australopithecus africanus (南方古猿). It was found near Johannesburg in 1947 and, based on evidence from its surroundings, was thought to be between 2. 1 and 2. 6 million years old. This puzzled scientists, because although Mrs Ples looks like a possible early ancestor of early humans, the first true humans had already evolved by the time she apparently lived. For this reason, scientists had decided that Australopithecus afarensis, a similar species from East Africa that lived about 3.5 million years ago, was our most likely ancestor instead.
To get a more accurate age for Mrs Ples, a team led by Professor Darryl Granger of Purdue University in Indiana, US, used a new method to date the sandy rocks where the skull lay. They measured the amount of certain chemicals in rocks, which form at a steady rate when they are exposed to cosmic rays (宇宙射线) on Earth’s surface. Once rocks are buried, these chemicals stop forming and slowly disappear;the surviving amount reveals how much time has passed since the rock (or bones) were on the surface.
The new study shows that Mrs Ples and other australopithecine bones nearby are between 3.4 and 3.7 million years old. This means they lived at the same time as their East African relatives, so that either group could have given rise to modern humans. However, team member Dr Laurent Bruxelles pointed out that over millions of years, at only 2,500 miles away, these groups had plenty of time to travel and to breed with each other. In other words, the groups could quite easily have met, had children together and both been part of the history of modern humans.
1. What can we learn about Mrs Ples from the first two paragraphs?| A．It is a skull found in East Africa. |
| B．It is the most possible ancestor of humans. |
| C．It is a million years older than scientists expected. |
| D．It is proved to live between 2.1 and 2.6 million years ago. |
| A．By studying the effect of cosmic rays. |
| B．By calculating the forming rate of chemicals. |
| C．By locating the sandy rocks where the skull lay. |
| D．By measuring the surviving amount of chemicals. |
| A．Modern humans came into being in East Africa. |
| B．Mrs Ples travelled and had children with East African relatives. |
| C．The history of modern humans might begin 3.5 million years ago. |
| D．Ape-like species from Africa could have interacted with each other. |
| A．Historical Puzzle Unsolved | B．Ancestor Mystery Solved |
| C．Mrs Ples: The Earliest Human Being | D．Mrs Ples: A Famous Skull |
3 . An individual from an unknown hominid (原始人类) species walked across a field of wet, volcanic ash in what is now East Africa around 3.66 million years ago, leaving behind a handful of footprints.
Those five ancient footprints, largely ignored since they were partly unearthed at Tanzania’s Laetoli site in 1976, show features of upright walking by a hominid, a new study finds. Researchers had previously considered them hard to classify, possibly produced by a young bear that took a few steps while standing. But the latest analysis refutes that suggestion.
McNutt, DeSilva, who started the new investigation as a Dartmouth College graduate student, and their colleagues fully dug out and cleaned the five Laetoli footprints in June 2019. Then they measured, photographed and 3-D scanned the ancient tracks. McNutt’s group focused on two footprints that were particularly well-preserved. Foot shapes, sizes, and walking characteristics of the Laetoli individual differed in various ways from those of other hominid individuals at the same site. The prints also didn’t match those from modern black bears and modern chimps (黑猩猩) walking upright.
The Laetoli individual possessed a wider, more chimplike foot than humans, the researchers say. Its big toe stuck out slightly from the second toe (脚趾), but not to the degree observed in chimps. On one step, the Laetoli individual’s left leg crossed in front of the right leg, leaving a left footprint directly in front of the previous track. People may cross-step in this way when trying to regain balance. And bears and chimps assume a relatively wide standing due to knee and other bone arrangements that prevent them from walking like the Laetoli individual and probably from cross-stepping, the scientists say.
Given that only two of the ancient footprints are complete enough to analyze thoroughly, the possibility that a chimp other than a hominid made the Laetoli footprints can’t be ruled out, says William Harcourt Smith, a scientist at Lehman College. But evidence of cross-stepping is enough to prove that it was a hominid track maker, he says.
1. What does the underlined word “refutes” in Paragraph 2 mean?| A．Objects to. | B．Supports. | C．Puts forward. | D．Criticizes. |
| A．They are less chimplike. | B．They have toes sticking out. |
| C．They show relatively wide standing. | D．They possess features of cross-stepping. |
| A．It’s convincing. | B．It’s challenging. |
| C．It’s confusing. | D．It’s conflicting. |
| A．To describe a major event. | B．To share a new discovery. |
| C．To introduce an unknown species. | D．To settle a huge disagreement. |
The first emperor of China, Qin Shihuang, is remembered for the many things he did during his rule.
Today, the soldiers in Xi’an’s terracotta museum are light brown, but they weren’t always this color. They began as an army of red, blue, yellow, green, white, and purple.
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