One early September morning, as the sun rose and the morning fog
In China’s Jiangxi Province, an ancient village has gained
Autumn is the best time of year
Chinatown is a district within larger cities which
Many Chinatowns used to consist largely
Many Chinatowns provide a
3 . The Sahara is the world’s largest and most magic desert, but knowledge about it is surprisingly limited. Even estimates of when it formed vary widely, from more than five million years ago to mere thousands. Now, however, geographers studying wind-carried Saharan dust on the Canary Islands have come closer to settling this: it is, they report, close to five million years old.
One reason for the uncertainty over the Sahara’s age is that researchers use different methods to estimate it. These include studying desert dust found in sediment (沉积物) under the Atlantic Ocean, analyzing sandstone and modeling the ancient climate. To help settle the uncertainty, Daniel, geographer of the U.S. Geological Survey, and his workmates looked at sediment on Spain’s Canary Islands. They found evidence of Saharan dust. The dust appeared in ancient soil layers (层), whose age they assessed on the basis of fossils (化石) found in the same layers — and that age agreed with the earlier ocean’s sediment studies. The researchers reported their findings in November in Palaeogeography.
“The conclusion of the study is very good,” says Zhongshi Zhang, a climate modeler at the University of Bergen in Norway, who was not involved in the work. “Because the dust found on the islands is distinct from the ocean’s record,” Zhang adds, “it helps to build the case for a five-million-year age.”
The Sahara is the biggest source of wind-carried dust in the world — and that dust’s journey does not end in the Canary Islands, which lie just off the western coast of Africa. It continues onto places such as the Amazon rain forest in South America, Daniel notes. Amazon soils are poor in nutrients, and he says the new results help to show how rich dust from Africa could have been supporting the South American region’s incredible biodiversity for millions of years — adding to the Amazon’s own origin story.
1. How did Daniel settle the formation time of the Sahara?A.By modeling the ancient climate in Spain’s islands. |
B.By studying the desert dust under the Atlantic Ocean. |
C.By assessing the age of the dust in ancient soil layers. |
D.By analyzing the wind-carried sandstone in the Sahara. |
A.The appearance of the dust. | B.The formation of two layers. |
C.The age of the Saharan dust. | D.The agreement of two layers. |
A.The Saharan dust. | B.The Amazon soils. |
C.The Amazon rain forest. | D.The Coastal waters. |
A.The Study of the Sahara. | B.The Birth of the Sahara. |
C.The Source of the Sahara. | D.The Effect of the Sahara. |
A new show at the British Museum is on. It explores the mystery of Stonehenge, the famous ancient group of
The show brings together more than 430 objects from across Europe
The show’s starring piece is a 3.600-year-old Nebra Sky Disc, a bronze circle with gold signs
The Amazon Rainforest is known
So what has gone wrong? There are
The really worrying thing, however, is the southeastern part of the Amazon. This is because the logging(伐木作业) has disturbed the balance of nature. Fewer trees means
For the Amazon to become “the lungs of the planet” again, we first need to end
Sayram Lake, known as a pearl on the mountain, is the
In ancient China, the lake
The water in the lake is clean and peaceful,
Going to Zhangjiajie reminds people of the mountains in Avatar. For those who love nature, Zhangjiajie National Park is
The park has thick forests, deep canyons, unusual peaks, caves, and pillar-like(像柱子似的)rock formations blanketed throughout the park. These pillar-like rock formations are
Zhangjiajie National Park is also home
The Grand Canal is the oldest and longest man-made waterway in the world with a history of more than 2,500 years,
The canal
In 2014, it was listed as a UNESCO world heritage site. In 2019 China issued a plan
9 . The Banaue Rice Terraces (梯田) in Ifugao Province in the Philippines offer a great sight. This UNESCO World Heritage Site is also rich in history and features how human creativity can produce amazing outcomes. Through hard work, the Ifugao native managed to survive by flattening the mountain’s surface layer by layer and using them as farmlands. This practice of more than two thousand years has put together a well-known wonder.
There are several rice terraces in the Ifugao region but the Banaue Rice Terraces are the most popular tourist spot. The photos of this area are often used in printed materials like textbooks magazines and postcards. After getting a good look at the rice terraces, I was reminded of the first time that I saw their pictures in our textbook during my elementary days. I already found them amusing as a kid and seeing their beauty as an adult got me more amazed.
The tourism officer told us that we were lucky to catch them in their greenest form. If you plan to visit this tourist spot as well, you should take note that we got there last June 1. You can also take into consideration that the rice planting cycle is typically 3 to 6 months.
Unlike the other terraces, the local government created a platform that makes it easy for everyone to get a closer look at the rice terraces. The platform has four stone statues that they refer to as rice protectors.
It’s sad that the younger generation of Ifugaos are slowly abandoning the rice terraces. According to tour guide Alvin, the part of the rice terraces where people can see thick bushes and trees were former rice fields. But the children who inherited (继承) those decided to give up farming and work in big cities instead. I hope that a new farming method with modern equipment will encourage the Ifugaos to continue their rice terraces farming tradition to protect this cultural treasure.
1. What can be learned about the Banaue RiceTerraces?A.They are most known for their history. |
B.They were made to mainly draw tourists. |
C.The locals created them with great wisdom and effort. |
D.Many mountains and lakes were turned into farmlands. |
A.To show the Banaue Rice Terraces are really attractive. |
B.To show Ifugao Province is heavily dependent on tourism. |
C.To show the Banaue Rice Terraces are more suitable for kids to visit. |
D.To show advertisements for the Banaue Rice Terraces spread rapidly. |
A.Tell us some facts about rice planting. |
B.Encourage more people to go to Ifugao. |
C.Raise public awareness of local traditions. |
D.Share the proper time to visit the Banaue Rice Terraces. |
A.Worried. |
B.Positive. |
C.Confused. |
D.Curious. |
10 . A New Viewing Platform at Camley Street Natural Park
There’s a new viewing platform added to Camley Street Natural Park. The platform is designed to bring architecture (建筑) and nature close together. It is a peaceful place to relax and helps people discover nature, especially wildlife. You’ll have a look at kinds of birds if you’re lucky.
The foundation
The platform is founded with the help of the New Architects: Finland UK Exchange Program, which brings together new architectural talents from Finland and the UK to explore cities’ ever-changing relationship with water.
The Design
The platform is designed by a team of young Finnish architects. The inspiration comes from the rocky islands off the Nordic coastline. For Finns, these islands are places to relax the mind and get away from busy city life. The platform offers Londoners a chance to experience this escape.
To find out more about the inspiration for the design, please visit www.viewpointlondon.fi/.
The Extra Use
The platform is also an important new learning base for Camley Street Natural Park. It will be used as an outdoor classroom and a place to host workshops for school children. It will give children views of the canal and other wildlife and a chance of getting close to nature.
Local schools can contact here to learn more.
1. What do we know about the platform?A.It is quiet and calm. |
B.It is changeable and dangerous. |
C.It separates architecture from nature. |
D.It can be used for feeding wild animals. |
A.Explore countryside. |
B.View all kinds of sports games. |
C.Experience nature and relax oneself. |
D.Act as a classroom for adults and children. |
A.On a website. | B.In a textbook. |
C.In a course plan. | D.On a technology platform. |