1 . Lisa St. Coeur Cormier, a high school science teacher in Prince Edward Island (PEI), Canada, found a tree root. When she took a closer look, she found the shape was very strange. She realized it wasn’t a tree root though it shared the same color. She felt it was hard to break and noticed an impression of bones of what looked like some kind of animal.
Cormier sent a photo of the find to Laura MacNeil who used her knowledge in this field to confirm that what Cormier had seen really was a fossil (化石). MacNeil runs tours of sites where prehistoric fossils have been found and also helps people identify fossils. She visited the site of Cormier’s find to take more photos of it.
MacNeil contacted John Calder, a scientist, who examined the fossil and led a team of scientists to study it. John Calder said it could be as much as 300 million years old. He said it’s probably from a reptile (爬行动物) of some kind — likely one that is unknown to scientists. Scientists spent 5.5 hours carefully digging out the fossil from the ground so they could study it more in-depth and find out exactly what kind of animal it is. That research could take a year or more.
“This is an important discovery here on Prince Edward Island. It is the second of the only two articulated skeletons (关节相连的骨头) found on PEI,” Laura MacNeil said. “This creature lived about 300 million years ago. This find tells us there is a great possibility for future scientifically important fossils that could be discovered on PEI. It will lead to more researchers paying a visit.”
1. How might Cormier feel when looking at the root carefully?A.Satisfied. | B.Surprised. | C.Concerned. | D.Proud. |
A.The scientists will have a detailed study on the fossil. |
B.The scientists have identified the species of the fossil. |
C.The scientists will keep the fossil under the ground. |
D.The scientists discovered the first articulated skeleton. |
A.Its long history. | B.Its wide popularity. |
C.Its scientific value. | D.Its economic importance. |
A.A scientist’s research on fossils | B.PEI is attracting more researchers |
C.Cormier’s unforgettable tour in PEI | D.A science teacher discovered a fossil |
2 . Every year thousands of tourists visit Pompeii, Italy. They see the sights that Pompeii is famous for, like its stadium and theatres, its shops, and restaurants. The tourists do not, however, see Pompeii’s people. They do not see them because Pompeii has no people. No one has lived in Pompeii for almost 2,000 years.
Once, Pompeii was a busy city of 22,000 people. It lay at the foot of Mount Vesuvius, a grass-covered volcano. Mount Vesuvius had not erupted for centuries, so the people of Pompeii felt safe. But they were not.
In August of AD 79, Mount Vesuvius erupted. The entire top of the mountain exploded, and a huge black cloud rose into the air. Soon hot rocks and ash began to fall on Pompeii. When the eruption ended two days later, Pompeii was buried under 20 feet of stones and ashes. Almost all of its people were dead.
For centuries, Pompeii lay buried under stones and ashes. Then, in the year 1861, an Italian scientist named Ginseppe began to uncover Pompeii. Slowly, carefully, Ginseppe and his men dug. The city looked almost the same as it had looked in AD 79. There were streets and fountains, houses, and shops. There was a stadium with 20,000 seats. Perhaps the most important of all, there were everyday objects, which tell us a great deal about the people who lived in Pompeii. Many glasses and jars had some dark blue colour in the bottom, so we know that the people of Pompeii liked wine. They liked bread, too; metal bread pans were in every bakery. In one bakery there were 81 round, flat loaves of bread — a type of bread that is still sold in Italy today.
Ginseppe has died, but his work continues. One-fourth has not been uncovered yet. Scientists are still digging, still making discoveries that draw the tourists to Pompeii.
1. Why do large numbers of people come to Pompeii each year?A.To visit the volcano. |
B.To shop and eat there. |
C.To watch sports and plays. |
D.To see how the people of Pompeii lived. |
A.Because the city nearby offered kinds of fun. |
B.Because the area produced the finest wine in Italy. |
C.Because few people expected the volcano to erupt again. |
D.Because the mountain was beautiful and covered with grass. |
A.Because Ginseppe and his men dug it slowly and carefully. |
B.Because the city was buried alive and remained untouched. |
C.Because scientists successfully rebuilt the city with everyday objects. |
D.Because nobody had lived in the city ever since the volcano erupted. |
3 . According to a new research, published in the journal Nature by a team from the University of Liverpool, humans were building structures made of wood, dating back at least 476,000 years ago. The research team found well-preserved wood at the site of Kalambo Falls, Zambia. Stone tool cut-marks on the wood show that these early humans shaped and joined two large logs (原木) to make a structure, probably the foundation of a platform. This is the earliest evidence in the world of the designed arrangement of logs to fit together.
Until now, evidence for the human use of wood was limited to its use for making fire, digging sticks and other tools. Wood is rarely found in such ancient sites as it usually rots and disappears, but at Kalambo Falls permanently high water levels kept the wood.
This discovery challenges the prevailing view that Stone Age humans were moving around. Here humans not only had a constant source of water, but the forest around them provided enough food to enable them to settle and make structures. Professor Larry Barham, from the University of Liverpool, who leads the “Deep Roots of Humanity” research project said, “This find has changed how I think about our early ancestors. They used their intelligence, imagination, and skills to create something they’d never seen before, something that had never previously existed.”
The special new luminescence (冷光) dating technique was carried out by experts, which explains the last time materials in the sand surrounding the finds were exposed to sunlight, to determine their age. This research forms part of the pioneering “Deep Roots of Humanity” project. Professor Barham added, “Kalambo Falls is an extraordinary site in Zambia. The Deep Roots team is looking forward to more exciting discoveries coming from its waterlogged sands.”
1. What is the finding of the new research?A.Wood was used for construction. | B.Wood pieces were joined for fun. |
C.Ancestors were good at architecture. | D.Ancient people designed wood products. |
A.Obvious. | B.Common. | C.Deep. | D.Strong. |
A.Energy-saving. | B.Time-consuming. | C.Ground-breaking. | D.Problem-solving. |
A.More discoveries come from Kalambo Falls. | B.Something can be done to protect Zambia. |
C.The sands used for research can be saved. | D.The site is set aside for further studies. |
4 . Human footprints in White Sands National Park in New Mexico aroused an argument two years ago when scientists found the prints to be surprisingly old.
In 2021, researchers described more than 60 footprints preserved in New Mexico. Radiocarbon dating(放射性碳定年法)of an aquatic(水生的)plant’s seeds in and around the footprints suggested that the first humans in North America came from Siberia via a land bridge between 23,000 and 21,000 years ago, almost 7000 years earlier than the long-held theory.
But some scientists noted that the aquatic plants used to date the footprints could have absorbed ancient carbon in groundwater. “There’s a possibility then for the plant to give overstated viewpoints on its age,” says Davis, who wrote a criticism of the 2021 paper.
Now, two other ways probably solving the argument, researchers report in the Oct. 6 Science. Pigati and colleagues radiocarbon-dated pollen(花粉)stuck in the same layers as some of the footprints. The pollen came from land plants, mainly pine, avoiding the groundwater carbon issue. The researchers also collected stones above the lowest footprints and used a dating method that estimates how long the stones had been buried.
The pollen gave an age range of 23,400 to 22,600 years old, and the stone an age minimum of about 21,500 years old. Both results proved the previous age estimate. Despite possible errors in the individual dating methods, “the data overall from the new study strongly indicate human presence in the Americas” around 22,000 years ago, says Bente Philippsen, a physicist at the Norwegian University.
One thing is certain: There’s still plenty to uncover about the footprints.Coauthor Kathleen Springer says, “We are learning more every time we go out there,” she says. “This paper is literally the latest chapter in the White Sands story.”
1. How many possible methods does the text mention to settle the controversy?A.Only one. | B.Two. | C.Three. | D.Four. |
A.Aquatic plants might have absorbed groundwater. |
B.Aquatic plant’s seeds in and around the footprints are different. |
C.The method of radiocarbon dating is not scientifically reliable at all. |
D.Groundwater carbon will affect the amount of radiocarbon detected. |
A.How the age estimation proved to be wrong. |
B.Whether radiocarbon dating method is effective. |
C.Why there was human presence in the American. |
D.What conclusion can be made through the research. |
A.Supportive. | B.Uninterested. | C.Confused. | D.Critical . |
5 . A city in the jungle
In the summer of 1848, in Guatemala, a man called Ambrosio Tut went out into the jungle (丛林), as he did almost every day. Tut was a gum (树胶) collector, looking for gum in the jungle.
For a long time before that day, local people had known that somewhere in the jungle there was an old Mayan city.
Seven years before Tut found Tikal, two British explorers had gone to Guatemala and had written a report about Mayan treasures in the jungle—but they hadn’t mentioned Tikal. Even earlier than this, local Indians had told people about a great city hidden in the trees, but no one had listened to them.
A.But no one had seen it for centuries. |
B.To do this, he had to climb the trees. |
C.And then people forgot that it was there. |
D.So they lost the chance to find the treasure. |
E.Tut found many other treasures after that. |
F.More and more scientists began to study the Mayan city. |
G.Tut didn’t really know what he had seen but he knew it was something special. |
Come and see the Terracotta Army: more than 8,000 statues were made in the
7 . The pyramids of Giza(吉萨金字塔) have been timeless(永恒的) symbols of Egyptian culture. But who actually built them? For years, we did not know for sure. But recently an ancient village was discovered near the pyramids. Close by, there was a cemetery(墓地) where pyramid builders were buried. From studying these places, archeologists are now certain that the pyramids were not built by slaves or foreigners (or aliens!). Instead, ordinary Egyptians built them.
It took about eighty years to build the pyramids. According to archeologists, about 20,000 to 30,000 people took part in the task. The workers had different roles. Some were responsible for digging up the rocks that were to be used. Others were tasked with moving them, while another group was given the job of shaping them into blocks. People also worked on different teams, each with its own name. These teams would often compete against each other to do a job faster.
Life for these workers was hard. “We can see that in their skeletons,” says Azza Mohamed Sarry El-Din, a scientist who has been studying the bodies that were found in the cemetery. The bones show signs of arthritis (关节炎), which probably developed as a result of having to carry heavy things for a long time. Archeologists have also found many female skeletons in the cemetery. The damage to their bones is similar to that of the men. Their lives may have been even tougher. Male workers would on average live to be between the ages of 40 and 45, but women would only live to be between the ages of 30 and 35. However, workers usually had enough food, and they also had good medical care when they got sick or hurt.
The work was hard, but the laborers were proud of their work. On a wall in Khufu’s Great Pyramid, for example, a group of workers wrote Friends of Khufu. “It’s because they were not just building the tomb of their king,” says Egyptian archeologist Zahi Hawass. “They were building Egypt. It was a national project, and everyone was a participant.”
1. According to the latest discoveries in the text, who built the pyramids in Egypt?A.Some foreigners. | B.Some aliens. |
C.Some ordinary Egyptians. | D.Some slaves. |
A.ancient societies | B.living things |
C.human behavior | D.the outer space |
A.The pyramid builders were looking for new friends. |
B.The pyramid builders were very angry with their bosses. |
C.The pyramid builders were satisfied with their achievements. |
D.The pyramid builders were in trouble because of their bad behavior. |
A.Sports. | B.Fashion. |
C.Personal Feelings. | D.Scientific Research. |
Come and see the Terracotta Army: more than 8, 000 statues were made in the third century BC to
The archaeological ruins of Liangzhu in Hangzhou, Zhejiang province, which date back 5,300 years,
The ruins,
The heritage site includes city ruins with palace
For example, cong — the jade piece that forms a rectangle tube with a circular inner section-is typical of artifact (器物)
Found in 2007, walls of the ruins and the
Come and see the Terracotta Army: more than 8,000 statues were made in the