The Sanxingdui Museum, which
Sanxingdui
Sanxingdui cultural relics are precious cultural heritage of human beings. Among these Shu treasures there are a variety of unique shaped bronzes (青铜制品). The Sanxingdui Ruins also serve as strong evidence that Chinese culture is
Six decades ago, China and France established diplomatic ties.
Over the past six decades, this dynamic relationship
Former French Prime Minister Jean-Pierre Raffarin believes that it is the love for peace that brings them together. As a
Lefevre Michele,
Oceane Rivoire, now a student
If you could travel back 3, 000 years
The Yinxu Ruins, listed as a UNESCO World Heritage Site in 2006, are
With a history of more than 2,000 years, the Silk Route dates back to the Han dynasty. Through this route, the Chinese highly qualified silk made its fame to the western countries. The merchants (商人) in different regions sought
Throughout all these years, many great figures have made significant contributions to the development of the Silk Route. Today, the Silk Route has a
5 . 2023 was a good year for archaeological discoveries. Here are some of the most interesting new finds.
A moai
In February, volunteers unearthed a stone head called a moai on Easter Island. The statue is small for a moai — a little over five feet tall, while others of the roughly 900 statues on the island are up to 33 feet tall.
Most of the moai were created between 1250 and 1500, and local people regard them as the living faces of their ancestors. But nothing is known about this new moai, including which ancestor it represents.
Two mummy workshops
Archaeologists announced in May that they discovered two more workshops near the ruins of the ancient Egyptian city of Memphis. One of the workshops features stone beds meant for the preservation of human bodies, while the other one has smaller beds that were used to mummify animals.
A Maya city
In June, Mexican archaeologists discovered a lost city called Ocomtun. They thought it was a major center from about AD 250 until it was abandoned when the Maya civilization collapsed between 900 and 1000, possibly from drought and civil wars.
Ocomtun covers more than 120 acres and features well-preserved homes, raised platforms and pyramid temples. The remains of the largest pyramid are more than 80 feet high.
Roman jewelry
In June, dozens of precious stones were discovered by archaeologists in the ruins of an ancient pipe system that carried water away from public baths in the third and fourth centuries. It’s thought they were worn by wealthy bathers. Some of these precious stones are carved with images of Roman gods, such as Apollo, Venus, and Mars, while others show animals, such as rabbits and birds.
The public baths were found at Carlisle in England. The city was a regional center in Roman Britain, when it was known as Luguvalium.
1. What is the height of the newly found stone statue?A.About 5 feet. | B.About 33 feet. | C.About 80 feet. | D.About 900 feet. |
A.In Chile. | B.In England. | C.In Egypt. | D.In Mexico. |
A.They are located in North America. | B.They were discovered by volunteers. |
C.They were related to religious celebrations. | D.They can reveal ancient urban development. |
6 . The periodic table of elements is a common sight in classrooms, campus hallways and libraries. The mode periodic table arranges the elements by their atomic numbers and periodic properties (周期性). Several scientists worked over a century to assemble the elements into this format.
In 1789, French chemist Antoine Lavoisiertried grouping the elements as metals and nonmetals. Forty years later, German physicist Johann Wolfgang Dobereiner observed similarities in physical and chemical properties of certain elements. He arranged them in groups of three in increasing order of atomic weight and called them triads, observing that some properties of the middle element, such as atomic weight and density, approximated the average value of these properties in the other two in each triad.
A breakthrough came with the publication of a revised list of elements and their atomic masses at the first international conference of chemistry in Karlsruhe, Germany, in 1860. They concluded hydrogen would be assigned the atomic weight of 1 and that the atomic weight of other elements would be decided by comparison with hydrogen. For example, carbon, being 12 times heavier than hydrogen, would have an atomic weight of 12.
In 1869, Russian chemist Dmitri Mendeleev created the framework that became the moder periodic table, leaving gaps for elements that were yet to be discovered. Mendeleev predicted the properties of some undiscovered elements and gave them names such as “eka-aluminum” for an element with properties similar to aluminum. Later “eka-aluminum” was discovered as gallium.
German chemist Lothar Meyer produced a version of the periodic table similar to Mendeleev’s in 1870. He left gaps for undiscovered elements but never predicted their properties. The Royal Society of London awarded the Davy Medal in 1882 to both Mendeleev and Meyer. The later discovery of elements predicted by Mendeleev verified (证实) his predictions and his periodic table won universal recognition. In 1955 the 101st element was named mendelevium in his honor.
On UNESCO website, it wrote, “The Periodic Table of Chemical Elements is more than just a guide or catalogue of the entire known atoms in the universe; it is essentially a window on the universe, helping to expand our understanding of the world around us.”
1. What is the breakthrough at the conference in Germany?A.The atomic weight of carbon was calculated by scientists. |
B.A brand-new periodic table was published at the meeting. |
C.The elements in the table were rearranged by the properties. |
D.The atomic weight of elements was quantified based on hydrogen. |
A.He made it more complete. |
B.He made it easier to understand. |
C.He was the first to arrange the elements by atomic masses. |
D.He discovered many new properties of some known elements. |
A.It is a window into chemistry. |
B.It is a helper to learn about history. |
C.It is a guide to exploring the microworld. |
D.It is a description of school curricula’s history. |
A.In order of the elements’ importance. | B.By following the time order. |
C.In order of scientists’ achievements. | D.By making comparisons. |
To write his own medical text, Li Shizhen referenced over 800 medical texts, countless books on history and geography, and works of literature. He even studied the complete works of many ancient poets, from
After over a decade of field research, Li
Since its first publication in 1596, the book
Today, there are a
A piece of fossil sponge (海绵) that formed during the early Cambrian period was recently discovered in Changde, Hunan Province.
The
“Sponges become bigger and bigger over time; another fossil piece
“So we stopped, and used a geological hammer
When people think of China, silk is among the first things that pop into their mind. The best place in China
Silk is a natural protein fiber. The protein fiber of silk consists mainly of fibroin,
Chinese legend gives the title Goddess of Silk to Leizu, wife of the mythical Yellow Emperor in about 3000 BC. She
Silk is the symbol of
1. When did people first celebrate books?
A.In 1922. | B.In 1926. | C.In 1930. |
A.Once a month. | B.Once a year. | C.Once every two years. |
A.Alexandria. | B.New Delhi. | C.Madrid. |