The Grand Canal, a great man-made project completed in ancient China, has witnessed Chinese history spanning over 2,500 years. On June 22, 2014, it     1    (include) on the World Cultural Heritage List.

Over a thousand years, the Grand Canal has been meandering (蜿蜒) through eight provinces and cities along     2     (it) course of 3,200 kilometers and connecting five major rivers, which     3    (be) the longest and oldest canal in the world. It is a precious heritage     4    (pass) down to us by our ancestors.

In modern times, as     5     result of social unrest, climate change, economic change and other impacts, the Grand Canal has been troubled by a series of problems such as river channel cutoff, water     6    (pollute), and water ecological damage. It was once the Chinese people’s dream that the Grand Canal could be restored to the past glory.

    7     the beginning of the new era, many places along the Grand Canal have launched ecological restoration projects. While maintaining the original form of the river course, they have focused on scientific protection and cultural heritage,     8    (highlight) the cultural, historical and ecological value of the Grand Canal.

On April 28, 2022, the Grand Canal was refilled with water for the first time in a century, after a 14-day water-supply project. With     9    (far) development of the project, the Grand Canal has gradually restored the past shipping capacity. Boat tours     10     cargo transportation have become available along the course. The “Golden Waterway” turns clean and lively again.

Canada’s national parks are established     1     (protect) and present outstanding representative examples of natural landscapes. These wild places,     2     (locate) in every province and territory, range     3     mountains and plains to forests and lakes. National parks protect the habitats, wildlife and ecosystem     4     (diverse) representative of the natural regions.

Parks Canada is     5     (responsibility) for both protecting the ecosystems of these great natural areas and     6     (manage) them for visitors to understand, appreciate, and enjoy in a way     7     doesn’t compromise their integrity (完整). Parks Canada is working to maintain or restore the ecological integrity of national parks. Maintaining or restoring ecological integrity     8     (be) a challenging task that involves     9     good understanding of the nature of ecosystems and the stresses they face.     10     (addition), it requires cooperation among people whose actions influence the ecosystems.

Yunnan is the hometown of tea. It provides the ideal climate and the ecological environment for large-leaf tea trees, which are located in the     1     (region) along the Lancang River. Thousands of years ago, they formed those ancient tea plantations,     2     are the best gift that nature has grated us.

    3     (preserve) the ancient tea trees, Southwest Chinn’s Yunnan Province has passed a protection regulation recently,     4     (clarify) that wild and cultivated ten plants aged over 100 wars should be better protected in the province. The new regulation, which will come into force starting from March 1, 2023,    5    (prohibit) six kinds of behaviors that harm ancient tea plants and their growing environment. Unauthorized cutting and transplantation of ancient tea trees, carving tree branches, digging the roots,     6    damaging the ancient lea trees are all banned.

Other     7     (legal) practices include using harmful chemical herbicides, releasing waste gas and water, as well as dumping and throwing waste     8     (casual) within the protection range of the trees, according to the regulation.

Yunnan has diverse resources of tea trees. The regulation also advocates proper research and     9    (apply) of Yunnan’s resources of ancient tea trees, raising varieties     10    new tea trees of good quality, as well as the establishment of relevant industrial chains.

Balesin Island lies in Lamon Bay, about 60 nautical miles east of Manila,     1     capital of the Philippines.

My family and I recently visited the small island,     2     is open for members only. The island is known     3     its slogan (标语): “Balesin, the most unique in the world.” What makes it so special? You can experience many     4     (difference) cultures and cuisines (菜肴) from around the world on one island.

Balesin Island is home to villas (别墅) representing several     5     (place), including the Greek island of Mykonos. Depending upon which villa you visit, the food and architecture make you feel like you’re in Bali, Tuscany, or the Greek island of Mykonos. There are also some stand-alone restaurants,     6     (offer) such choices as German, Japanese, Korean, and Mongolian food.

Most of the food     7     (serve) at the restaurants is grown on the island. Activities include bird watching, boating, fishing, gardening, and horseback riding.

J. J. Fernandez, a     8     (tour), said that she fell in love with the island during     9     (she) visit. Being on Balesin, she     10     (add), is like “traveling around the world in just three days.”

Astronomers have published a major finding    1    (recent): A black hole has been releasing energy from a small star    2    was shredded (吞噬) in 2018, after two years in which it didn’t emit (发射) any such material.

“Super unusual,” said Yvette Cendes, an astronomer at Harvard. “We’ve never really seen this before to this degree.”

Researchers made the    3     (discover) when they used a    4     (power) radio telescope facility to check some two dozen black holes where stars had been shredded after     5    (come) too close to them. Such happenings    6    (call) tidal disruption (潮汐破坏) events, or TDEs.

What they found was that one of the TDEs was emitting energy at an unusual speed    7    at a very surprising time: more than two years after the event.

This behavior is different from what has been observed in black holes before, in two ways. First, the timing: it’s more common    8    (see) radio emissions from black holes within the first few months after swallowing a star. And second, the energy emitted in this case doesn’t quite fit in    9    what astronomers have seen before.

In most cases of black holes swallowing stars, perhaps 99%, the outflow is lower in energy. And in 1% of cases, that outflow, at about half the speed of light, rarely    10     (occur).

Some designers on an island in southern Japan have tried to put regenerative architecture (再生式建筑) into effect. It’s the idea that houses can     1     (build) in such a way that they support and benefit the environment where they stand.

    2     (situate) on Yakushima Island, the project, which is called Sumu, is surrounded by mountains and a river that runs into the nearby ocean. Therefore, the designers     3     (want) to show nature in the build as much as possible. With this in mind, they started with wood     4     was produced from the local trees.

The buildings themselves were     5     (careful) placed to offer benefits to the nearby water and ongoing air flow. Buildings were designed around existing trees and are lifted     6     (reduce) their effect on the building site. They took full advantage of the surrounding views to encourage a     7     (connect) with nature. This idea is also shown with outdoor walkways between sleeping bedrooms     8     the common areas.

Moreover, Sumu is powered by renewable energy. It’s equipped with solar power and relies on local firewood     9     heat. Green design elements give some tips on how to save energy through     10     tight envelope and strong insulation (绝缘体).

BEIJING, Nov. 30(Xinhua)—The three astronauts aboard China’s Shenzhou-15 spaceship entered the country’s space station and successfully met with another astronaut trio on Wednesday, a historic     1     (gather) that added the manpower at the in-orbit space lab to six for     2     first time.

It is the first time that Chinese astronauts aboard the space station     3     (see) the visit of a crewed spaceship, according to the CMSA.

Chen Dong, the commander of the Shenzhou-14 crew, opened the hatch at 7: 33 a. m. (Beijing Time). The three space station occupants greeted the new arrivals with warm hugs     4     then they took a group picture     5     their thumbs up,     6     shouted in chorus—“China’s space station is always worth     7     (look) forward to.”

The space reunion     8     (kick) off the first in-orbit crew rotation in China’s space station, according to the China Manned Space Agency (CMSA).

The six astronauts are projected to live and work together for about five days to complete     9     (plan) tasks and handover work, said the CMSA.

The whole process took     10     (approximate) 6.5 hours, the CMSA said.

Dogs may be man’s best friends, but let’s not forget that a faithful fetching stick is a dog’s another best friend if you don’t have a tennis ball at hand.

So when Andrew Taylor noticed that there    1    (be) a lack of good sticks at his local park, he    2     (immediate) determined to take matters into his own hands.

The 59-year-old dad    3    had been chopping (砍) off extra branches from some trees in his yard made a decision    4    (build) a “Stick Library” for all the local dogs.

After    5     (turn) the branches into several dozen conveniently-sized    6    (piece), he put them into a hand-crafted box    7    the words “Stick Library: Please Return” and brought it to the park.

Since Taylor and his daughter hosted a small neighborhood inauguration (开幕) party for the Stick Library, more than 50 dogs and their owners    8     (enjoy) a game of fetch with the sticks.

“As people started to arrive, there was a    9    (disbelieve) of how simple the idea was, but it’s one of those ideas no one had thought of,” said Taylor’s daughter Tayla Reece. “All the dog owners appreciate    10    , as they all have experienced the ‘good stick search’, which isn’t always fruitful. It’s an idea that just makes sense to them.”