Four ancient Chinese irrigation (灌溉) sites have been honored as World Heritage Irrigation Structures,     1    has brought the total number of irrigation projects in China on the list to 23.

Tianbao Weir (堰), one of the newly     2     (award) projects, is situated in Fujian Province. With a history of over 1, 200 years, the weir is the     3     (old) existing water project specifically aimed at stopping saltwater and storing freshwater.

Longshou Canal and Ancient Luohe River Irrigation District in Shaanxi Province is said to be the first underground canal in China’s history. The canal is a major branch of the Yellow River,     4     (provide) irrigation for local farms in the face of     5     (dry) and water shortage.

The Weirs of Baishaxi Stream Project in east China’s Zhejiang Province is made     6    of 36 weirs, 21 of which still offer irrigation water. The project covers 45 kilometers of the Baishaxi Stream and has a total water level drop of 168 meters.

Sangyuanwei Polder Embankment (堤) System     7     (locate) in south China’s Guangdong Province, which was first built     8    the 10th century. The embankment extends for 64.8 km and the system provides irrigation, drainage canals and water     9     (pathway).

The ancient irrigation projects are treasures of the development of Chinese water culture     10    of great value for the development of Irrigation agriculture in China.

Placed among the busy streets of Washington, D. C. is a large public garden that many Americans have never heard of. The U. S. National Arboretum (植物园) includes     1     collection of flowering plants called azaleas, a field of native plants named ferns, and flowering trees in the dogwood tree area. The garden     2     (establish) by Congress in 1927. It plays a leading part in researching and developing plants like trees, shrubs, flowers, and grasses.

Government scientists are in charge of the 180-hectare area. Their main goal is     3    (strengthen) the U. S. economy by making sure an important kind of agriculture,     4     (call) the nursery industry, continues to perform well. The most recent numbers from the U. S. Department of Agriculture (USDA) show that the ornamental and landscape plant industry creates billions of founds in sales each year.

The arboretum is home to one of the     5     (large) collections of preserved seeds in the world. The National Arboretum Herbarium (植物标本)     6     (house) around 700,000 ex-ample seeds. They include seeds from plants that the USDA considers as     7    (economical) important. Scientists collect many genetically different seeds within a kind of plant from both native and non-native plants. The reason     8     collecting that data is that scientists protect plants from harmful situations like climate change, changed environments, or other new and possible risks.

While the scientists do their work, the public     9     (explore) plants is free to visit the arboretum. Though many people may not know it, the arboretum has had a hand in developing a number of plants     10     are part of American landscaping.

Huangshan, which lies in Anhui province, is on the UNESCO World Heritage List and is one of the top scenic     1     (attraction) in China. HuangShan     2     (it) does not have good transportation links. Most travelers stop in either Tangkou or Tunxi for the nights before and after a visit to Huangshan.

Huangshan has 36 separate peaks, all     3     (rise) above 1,800 meters. Famous throughout Chinese artistic history, Huangshan represents the typical (有代表性的) mountain in Chinese paintings. So far, over 1,450 kinds of plants     4     (find) there.

The main thing to do in Huangshan is walk pround and take photographs of the scenery, which is spectacular (壮观的),     5     (beauty), different and changing in appearance with every change of weather.     6     same view looks quite different by day in fine weather and with cloud, early morning and late evening. Sunrise and sunset are famous but, of course, they depend     7     the weather.

When there is good weather and clear skies, watching the stars at night is     8     (fair) rewarding. If you are staying overnight at a hotel on the mountain then before dark     9     (come), find some good areas     10     you can get away from the hotel lights and look up. You are likely to view a sky full of stars.

Yucun and Xidi, two villages in eastern China,     1     (entitle) “Best Tourism Villages” by World Tourism Organization in 2021. The “Best Tourism Villages” initiative aims to promote the role of tourism in     2    (protect) rural villages, along with their landscapes, natural and cultural diversity. The two villages will gain access to an exchange platform     3     (sponsor) by World Tourism Organization and receive supportfrom it.

The village of Yucun, located in Anji County of east China’s Zhejiang Province, is often referred to as a “beautiful town” as its     4     (environmental)conscious (有……意识的) local authorities treasure the area’s clear waters and green mountains. Back in the 1980s and 1990s, the village based its economy     5     the area’s high-quality mineral resources and became the     6     (rich) community in Anji, but it also paid     7     high price for pollution. In recent years, Yucun has made the effort     8     (improve) its environment and by now it has become a popular tourist destination.

Xidi,     9     unique, elegant black tile (瓦片) roof wooden houses and decorative gate towers are well-known, is located just 40 km from the Huangshan tourist attraction. Xidi ranks among China’s ten most important historic and cultural     10     (center).

I am in the Sarek National park in Sweden，    1     there are no roads or towns. When I wake up to the sound of the wind buffeting the cloth of     2    (I)tent，I check my watch and find it is 7：30 a.m. I am now above the Arctic Circle，where the sun never     3    (set)in summer. I walk over to the mountain edge.     4    (spread)out before me，branches of the Rapa River flow through the valley below.

There used     5    (be) vast sheets of ice covering Sarek’s mountains. Around 9，000 years ago，the ice melted， leaving behind about 100     6    (glacier). First came the reindeer and then humans，who lived in harmony     7     nature.

For hundreds of years，the Sami looked after reindeer and depended     8     reindeer for a living. The Sami was always accompanying the reindeer on the move. Today，most Sami have houses in villages near Sarek.

After breakfast，I pack my bag and set out for another adventure to the other side of the valley. Being in such a beautiful and wild place makes me feel     9    (bless)to be alive. Here I am，alone under this broad sky，breathing the fresh air and enjoying this great adventure. What could be     10    (good)?

Near the ancient water town of Wuzhen, the scenic villages of Maming and Haihua provide the perfect destinations for travelers seeking a taste of real rural life.

    1     (locate) at a 30-minute drive from the ancient water town of Wuzhen, Maming village is the exact opposite of Wuzhen. There are hardly any crowds here. The old houses are not as well maintained. There     2     (be) no bright colorful lights along the walkways. Time seems to stand still in the village,     3     (make) it a perfect day-trip destination for travelers     4     want a real experience of rural life.

Most people in Tongxiang city in East China’s Zhejiang province are still sleeping on the bed at 3 am,     5     Tu Yuanqing and his father Tu Bingfa are already up, arranging cups, boiling water and preparing tea     6     (leaf). The doors to their tea house in Maming village open just half an hour later. By 4 am, the space is filled     7     activities as elderly local people, most of them aged 60 and above, chat     8     (active) with one another while sipping cups of tea and smoking cigarettes.

This tea party for the elderly ends at 8 am, the time the villagers begin     9     (they) day in the fields. But there is no official closing time for the tea house-—the Tu family lives in     10     same building.

Hangzhou, located in the north of Zhejiang province, is one of the seven ancient     1     (capital) of China. As a core city of the Yangtze River Delta, Hangzhou     2     (be)one of the most prosperous cities in China for more than 1, 000 years, and is home     3     a lot of natural attractions.

The West Lake is definitely a place people can never miss when visiting Hangzhou. The lake itself cowers 6 square kilometres, and some of Hangzhou’s most famous scenic places     4     (include). You can just walk along the Nanshan and Beishan roads, take a ferry on the boat to the islands on the lake,     5     simply sit in a lakeside teahouse.

Hefang Street is where you can experience how Hangzhou     6     (look) when it was the capital of China. The emperors’ palace was once located on the street,     7     (make) it the economic and political center of the city. Most of the shops there have     8     history of more than 100 years.

The Xixi wetland is not only China’s first national wetland park, but also a natural haven from the busy city life,     9     is listed as a cultural treasure.

As UNESCO says on its     10     (office) website, “With its famous natural beauty and cultural heritage, Hangzhou has already become one of the most important tourist venues in China.”

Peru is a country on the Pacific coast of South America with three main     1     (area). In the 1400s and 1500s, Peru was the centre of the ancient Inca Empire. Spain     2     (control) Peru in the 16th century and ruled it until 1821.

Fly from Cusco into the Amazon rainforest, where you take a boat to get to your accommodation in     3     middle of the forest. Then spend three days     4     (hike) and exploring nature.

You will be     5     (amaze) by Machu Picchu.     6     (especial) amazing is the Incas’ dry stone method of building. Stones     7     (cut) to exact sizes so that nothing was needed to hold walls together other than the perfect fit of the stones.

Cusco was the capital of the Inca Empire from the 13th     8     the 16th century. There, you can enjoy the unique Spanish and local Indian culture. Stay in a local hotel, visit the museums, admire the architecture, enjoy the excellent local food, and go     9     (shop) at the local markets.

When arriving in Lake Titicaca, a boat will take you to a local Uros family on an island for three days. Both the island and the Uros homes are made     10     water plants from the lake.