4 . With no special equipment, no fences and no watering, two abandoned agricultural fields in the UK have been rewilded (重新野化), in large part due to the efforts of jays, which actually “engineered” these new woodlands. Researchers now hope that rewilding projects can take a more natural and hands-off approach and that jays can shed some of their bad reputations.

The two fields, which researchers have called the New Wilderness and the Old Wilderness, had been abandoned in 1996 and 1961 respectively. The former was a bare field, while the latter was grassland—both lay next to ancient woodlands. Researchers had suspected that the fields would gradually return to wilderness, but it was impressive to see just how quickly this happened, and how much of it was owed to birds.

Using aerial data, the researchers monitored the two sites. After just 24 years, the New Wilderness had grown into a young, healthy wood with 132 live trees per hectare, over half of which (57%) were oaks. Meanwhile, the Old Wilderness resembled a mature woodland after 39 years, with 390 trees per hectare.

“This native woodland restoration was approaching the structure (but not the species composition) of long-established woodlands within six decades,” the researchers explained in the study.

Part of this reforestation was done by the wind, and researchers suspect that previous ground disturbance may have aided the woodland establishment—which is good news, as it would suggest that agricultural areas may be reforested faster than anticipated. However, animals—Eurasian jays, thrushes, wood mice, and squirrels—also played an important role in helping the forests take shape. This handful of species provided much of the natural regeneration needed for the forest to develop. Jays, in particular, seem to have done a lot of heavy lifting.

1. What does the underlined word “shed” in Paragraph 1 refer to?

A．Be opposed to.

B．Be ashamed of.

C．Get used to.

D．Get rid of.

2. Which aspect of the changes in the two fields impressed the researchers?

A．The scale of the woodlands.

B．The diversity of the fields.

C．The rate of the changes.

D．The frequency of the wilderness.

3. What does the author want to tell us by providing some data in Paragragh 3?

A．The woodland restoration was approaching the structure of long-established ones.

B．Much of the wilderness of the fields was owed to birds.

C．Previous ground disturbance aided the woodland establishment.

D．How quickly the fields returned to wilderness over time.

4. What does the last paragraph mainly talk about?

A．The essential role of humans in the reforestation.

B．The factors that contribute to the reforestation.

C．The importance of woodland establishment.

D．The threats faced by a handful of wild animals.

5 . For thousands of years, Chinese writers have travelled all over the country to take down notes about the geographical conditions of each city. Among them, well-known Chinese geographer and writer Li Daoyuan, in the Northern Wei Dynasty (386-534), composed his book, Commentary on the Water Classics, after studying the original literary version, Water Classics. He later expanded the river records to 1, 252 from the original 137.

The book is now being studied again by Professor Li Xiaojie and his team from Fudan University. They have been using drawing software and 3D modelling to recreate the waterway situations on a map based on the book description. So far, they have completed research on four rivers.

“Ancient people knew really well how to apply the power of nature to technical considerations,”Li said, giving the example of Qianjin’e, one of the most famous ancient water conservation projects in Luoyang, Henan. In order to lead the river into the city for irrigation (灌溉) in ancient Luoyang, the officials built a canal branch by separating a northwest-southeast river. However, the canal water wasn't enough to support the citizens in dry seasons. To solve that, on the northern side of the canal branch, the officials built a reservoir (水库) and a channel to lead the water to the canal branch, where the waterways would converge and flow together to the city.

In Commentary on the Water Classics, a total of 2, 800 cities are recorded with details. Still, the process of recreation takes much effort. After doing a lot of text analysis and fieldwork, the team has gradually created the model with 3D modelling software based on repeated deductions (推论).

For Professor Li, the book is not only a record of the natural landscape over 1, 000 years ago, but also a detailed description of humanity and culture and a treasure for today’s reference.

1. What can we learn about the book Commentary on the Water Classics?

A．It has been out of date.	B．It explains 3D modelling.
C．It keeps records of 137 rivers.	D．It is based on previous studies.

2. What does the underlined word “converge” in paragraph 3 mean?

A．Join.

B．Pass.

C．Cross.

D．Begin.

3. What does paragraph 4 mainly tell us about model recreation?

A．Its major problems.	B．Its detailed analysis.
C．Its complex process.	D．Its successful application.

4. Which of the following can be the best title for the text?

A．3D Technology Fuels Modern Research

B．Ancient Classics Inspire Modern Research

C．An Effective Approach to Model Recreation

D．A Famous Writer of Chinese Ancient Classics

7 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

The Great Wall of the ancient Qi State,the oldest    1    (exist) Great Wall in China, stretches across Shandong for more than 600 kilometers. It    2    (build) during the Spring and Autumn Period and the Warring States Period.

“Historical records say the Qi State built the wall here to defend itself    3    its enemies, as well as to stop flooding    4    (effective),” says An Xingzhu, who worked at the town’s culture station for more than three decades. A key task of the station is    5    (protect) cultural relics.

In the 1970s，parts of the rammed earth wall(夯土墙)were dug out and used by farmers for their land, but since the early 1990s, the local government    6    (start) to take measures to protect the wall.

Rapid development and    7    (construct) have brought many new problems and challenges in protecting the wall.    8    is necessary to provide a solid legal guarantee for its conservation. To tackle the challenges, Shandong Province has passed a regulation protecting the structure    9    will take effect on Jan. 1.

It states that local governments will establish a dynamic conservation system using remote sensing satellites, drones, information platforms and other technological    10    (mean) to monitor the Great Wall.

8 . The Best Caves in The World

Hang Son Doong, Vietnam

Natural caves don’t come much larger than Hang Son Doong, close to the border between Laos and Vietnam. This cave possesses the largest cross-section of any known cave on the planet, a vast area that is difficult to describe. Supposedly, a Boeing 747 could fly through without damaging its wings, but that doesn’t really do justice to the vastness of Hang Son Doong. The stalactites (钟乳石) here are pretty massive too, with some reaching up to 80 metres.

Waitomo Caves, New Zealand

Glowworms (萤火虫) are there, as far as the eye can see. Okay, not literally, but the Waitomo Cave system on New Zealand’s North Island is best-known for the fluorescent fauna that light up the walls, giving it the not-particularly-creative but completely acceptable “Glowworm Caves” nickname. They are more accessible than other caves on this list, with rafting and adventure tours available to those looking for something a little more thrilling.

Mammoth Cave, the USA

If you have certain expectations from somewhere called “Mammoth Cave”, that is entirely understandable. Mammoth Cave in Kentucky is the world’s longest known cave system, an incredible 420 miles of underground wonder. That’s twice as long as the next longest, by the way, although it isn’t unusual for the USA to go all out on such things.

Reed Flute (芦笛) Cave, China

Named after the reeds that grow outside, which are used to make flutes, obviously, the Reed Flute Cave’s walls are covered with inscriptions from centuries gone by—if evidence was needed that people have been paying attention to this place for a long old time. The inside part of the cave is also lit up by multicoloured lights, giving it a real otherworldly theme that adds weight to the nickname.

1. What is special about Hang Son Doong?

A．It was once a base of a factory.

B．It is the deepest cave in the world.

C．It has the highest stalactites in the world.

D．It owns the largest cross-section in the world.

2. Which of the following can be much easier to enter?

A．Hang Son Doong.	B．Waitomo Caves.
C．Mammoth Cave.	D．Reed Flute Cave.

3. Which country probably has the longest cave system in the world?

A．Vietnam.

B．New Zealand.

C．The USA.

D．China.

9 . Discover Jiangsu

Known as shui xiang, or “the land of water”, China’s coastal province of Jiangsu has all the geographical advantages to give it a starring role in the epic tale of China’s ancient Maritime (海上的) Silk Road. With busy port cities, historic sites and breathtaking natural beauty, Jiangsu is the perfect place to trace the story of this remarkable trade route.

Nanjing and the voyages of Zheng He

At the dawn of the Ming dynasty the city of Nanjing in Jiangsu was declared capital of China. As well as building one of the longest city walls in history, the emperor ordered the construction of vast “treasure ships” in 1403. Under the command of legendary seafarer Zheng He, the fleet embarked on seven epic ocean voyages, reaching as far as the east coast of Africa.

Nantong and overseas trade

In Jiangsu’s port city of Nantong, goods have flowed in and out of the province by water for centuries. Today, fleets of hardy fishing boats catch yellow croaker, seabream, sea crabs and more. Beyond Lusi Port Town, a busy seascape of boats travel on the waters of Jiangsu’s coast. It’s a scene that shows how China’s historic Maritime Silk Road continues to thrive and grow to this day.

Yancheng and unspoiled nature

Salt was one of the commodities that played a key role in the history of trade in Jiangsu, contributing to the wealth and prosperity of the province. A major source was the tidal salt flats of Yancheng, which literally means “salt city”. This remarkable landscape also plays host to the epic migrations of rare bird species like cranes, egrets, and spoonbill sandpipers.

Yangzhou, Lianyungang and the exchange of ideas

In the Jiangsu city of Yangzhou, a Tang-dynasty monk by the name of Jianzhen set sail to Japan to spread the teachings of Buddhism. Daming Temple, where Jianzhen lived, can still be visited today.

Centuries earlier, Buddhism first settled on Jiangsu’s shores. Kongwang Mountain in Lianyungang has some of China’s earliest examples of Buddhist art. These carvings show how the Maritime Silk Road helped spread religion across China.

1. What made Jiangsu an Ancient Gateway to the Maritime Silk Road?

A．Its Buddhist art.	B．Its remarkable seascape.
C．Its wealth and prosperity.	D．Its geographical advantages.

2. Which city has a historic temple as a big tourist attraction?

A．Nanjing.	B．Nantong.
C．Yancheng.	D．Yangzhou.

3. Where is this text probably taken from?

A．A geography magazine.	B．An academic report.
C．An economics book.	D．A travel blog.

10 . 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.

2. What is the underlined words “their findings” in the paragraph 2 refer to?

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.

3. What contributes to the biodiversity of the South America?

A．The Saharan dust.	B．The Amazon soils.
C．The Amazon rain forest.	D．The Coastal waters.

4. Which is the most suitable title for the text?

A．The Study of the Sahara.	B．The Birth of the Sahara.
C．The Source of the Sahara.	D．The Effect of the Sahara.