The Grand Canal is the oldest and longest man-made waterway in the world with a history of more than 2,500 years,     1     construction started in the Spring and Autumn Period. The 1794 kilometers’ waterway is 22 times the     2     (long) of the Panama Canal. It is a golden waterway second only to the Yangtze River in China. The Grand Canal runs from Zhejiang to Being     3     (pass) through six provinces and two municipalities and connects five main river systems.

The canal functioned     4     the backbone of the ancient empire’s inland communication and trading systems. Grain, salt, logs and silk were transported along the canal to all directions.     5     (score) of towns along the banks developed, contributing     6     (huge) to ancient China’s economy. The canal enormously promoted economic interaction and cultural exchange between the north     7     south, which ensured the country’s stability.

In 2014, it was listed as     8     UNESCO world heritage site. In 2019 China issued a plan     9     (construct) national cultural parks for the Grand Canal. During the last 2 years, building the Grand Canal national cultural parks     10     (recognize) as a key task in the 14th Five-Year Plan. In future, cities along the Grand Canal will form a new cultural belt, green belt and tourism belt.

The sheepskin raft (筏), the oldest ferry tool along the Yellow River, has a history of nearly 2,000 years. The airbag of the raft is made of a whole sheepskin and experiences processes that include     1     (heat), soaking, sewing, drying and blowing. Afterwards, the airbags are attached     2     a wooden stand, enabling its use for transporting people and goods across the water.

It is said that the     3     (large) sheepskin raft in old times consisted of more than 600 sheepskin airbags, with an impressive length of 22 meters and a     4     (wide) of 7 meters.

    5     railways were not yet in operation and road traffic was inconvenient in the early 20th century, the sheepskin raft     6     (serve) as the most important means of transportation for residents nearby.

However, with the rapid development of society, the sheepskin raft has finished     7     (it) historical task in transporting people and goods. Nowadays, it can only be found in several cities. It has become a tool for people     8     (go) sightseeing along the river.

Today only some of the older generation of rafters still operate the traditional sheepskin rafts,     9     are struggling to make a living. Unsurprisingly, the younger generations prefer to pursue other business     10     (opportunity) on the riverbank rather than continue the operation.

The Great Barrier Reef (大堡礁) is one of the seven     1     (wonder) of the natural world. Pulling away from it and viewing it from a greater distance, you can understand why. The reef, between 15 kilometers     2    150 kilometers off shore and around 65 km wide in some parts, is a collection of colorful coral     3     (provide) divers with the most excellent underwater experience imaginable.

A closer encounter with the Great Barrier Reef’s impressive coral gardens presents a number of     4    (extreme) amazing underwater attractions, which include the     5     (large) gathering of corals (珊瑚), coral sponges, rays (鳐鱼), dolphins, over 1,500 species of tropical fish, more than 200    6     (variety) of birds, etc.

The reef is    7     area for humpback whales to breed (繁殖), and is also a habitat of a few endangered species including the Dugong (Sea Cow) and large Green Sea Turtle. In recognition of its significance, UNESCO     8     (list) the Great Barrier Reef as a World Heritage Site in 1981.

Because of     9     (it) natural beauty, both below and above the water’s surface, the reef     10     (become) one of the world’s most popular tourist destinations to date.

Yueyang Tower is     1     ancient Chinese tower on the shore of Lake Dongting. It is one of the Three Great Towers of Jiangnan. Yueyang Tower became famous for Memorial to Yueyang Tower (《岳阳楼记》)  written by Fan Zhongyan,     2     was an excellent officer of the northern Song Dynasty (960-1127) in China.    3     (lie) on the city wall of the west gate of the ancient city in Yueyang City, Hunan province, China, Yueyang Tower faces Junshan Island and     4     (overlook) Dongting Lake, being extremely beautiful and     5     (impress). Since ancient times, it     6     (enjoy) the good fame that Dongting Lake is the     7     (good) among lakes, and Yueyang Tower is incomparable among towers. It is the only ancient     8     (build) with a helmet (盔) roof structure in China. Before the Tang Dynasty (618-907), Yueyang Tower was     9     (main) used for the military purpose. After the Tang Dynasty,     10     gradually became a famous scenic spot in which men of letters chanted poetry and wrote fu.

Built in the 3rd century B.C, Dujiangyan Irrigation System,    1    still controls the waters of the Minjiang River and distributes it to the fertile farmland of the Chengdu plains, is a living heritage of 2,000-year-old design and engineering ideas. It has been     2     (complete) preserved, with all necessary features     3     (demonstrate) the outstanding universal value. They express the importance of using natural features to their fullest in constructing an irrigation system. The Dujiangyan irrigation system, located in the western part of the Chengdu flatlands at the meeting place     4    the Sichuan basin and the Qinghai-Tibet plateau, is     5    ecological engineering achievement originally constructed around 256 BC. Enlarged during the Tang, Song, Yuan and Ming    6     (dynasty), it uses natural features to solve problems of making water change direction for irrigation, flood control, and flow control without the use of dams.

There are three major parts of this irrigation system. The first is a well-designed levee (堤坝)named Yuzui (Fish Mouth) in the middle of the river that was shaped     7     (control) the amount of water that enters the two channels. The second is a channel of the irrigation project called Baopingkou (Cherished Vase Mouth) whose narrow opening regulates the amount of water entering the system. The third is a spillway called Feishayan    8     (dig) to discharge water, sand and mud.

The system     9     (produce) comprehensive benefits in flood control, irrigation, water transport and general water    10     (consume) since it was begun over 2,250 years ago. It now irrigates 668,700 hectares of farmland.

Some theme parks not only make people feel     1     (amaze) but also are educational. Take the Polynesian Cultural Center (PCC) in Hawaii for example. It not only shows visitors the Polynesian way of life but also     2     (protect) their skills and culture for the future. Polynesia is     3     name given to the groups of small islands that are spread about the Pacific Ocean.

The     4     (villager) from many island communities come to the Polynesian island villages to show visitors their styles of dress and different customs. They are the places     5     visitors can learn how the islanders make clothes from bark (树皮) and how the islanders climb very tall trees with their bare feet.

One of the important skills for Polynesians is boat-building. It allows the islanders     6     (explore) all the islands in the Polynesian Triangle.     7     (obvious), they were sea travellers in their history moving     8     island to island. They were     9     (confidence) of finding their way by     10     (use) the smell of the wind, the movements of the fish and seaweed, and the heights and directions of the waves.