Mount Tai, is a representative of Chinese mountains with     1     (impress) views and beautiful natural scenery. Above all, it     2     (carry) historical and cultural significance in China.

Mount Tai,     3     (locate) north of Tai’an in Shandong province, is the third highest of the Five Great Mountains. However, in Chinese culture, east is viewed as a     4     (true) sacred direction, where the sun and the moon rise. Therefore, Mount Tai is closely related to sunrise, birth and renewal (复兴). That is     5     it is known as the leader of the Five Great Mountains. The summit, Jade Emperor Peak, standing     6     an altitude of 1,545 meters, provides tourists with a remarkable bird’s eye perspective of Tai’an city.

Historically, Mount Tai served as     7     essential ceremonial center in China, witnessing the presence of 72 emperors. It was a must for emperors to visit it when they came into power, because Mount Tai     8     (consider) the symbol of the kingdom’s peace and prosperity. Moreover, Mount Tai sparked countless creations of works,     9     (leave) behind a wealth of cultural relics. In 1987, Mount Tai was listed as both a World Natural Heritage site and a World Cultural Heritage site by UNESCO. Nowadays, Mount Tai continues to be a source of inspiration for     10     (poem), essays and paintings.

2 . 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 main structure of the Datengxia water resources management facility in Southwest China has been completed four months ahead     1     schedule, the Ministry of Water Resources said on Saturday.

The project,     2     is located in the Xijiang River, has eight power generation     3     (unit), each with an installed capacity of 200,000 kilowatts (千瓦). It can     4     (annual) generate more than 6 billion kilowatt hours of electricity.

In cooperation with other reservoirs (水库), the project can help Wuzhou, a city with     5     population of over 2.8 million in Guangxi, deal with once-in-a-hundred-year floods. Previously, the city was only able to hold floods that occur once every 50 years. The project also enables some cities in the Pearl River Delta     6     (resist) floods that happen once every two centuries.

The ministry said the Datengxia facility will also provide strong support for rural development, offering irrigation (灌溉) water to 80,000 hectares of farmland and     7     (address) drinking water shortage for almost 1.4 million people in Guangxi.

The project has already played     8     (significance) roles in the past three years when it was put into trial operation. For example, in June last year, it helped prevent     9     store about 700 million cubic meters of floodwater when the Xijiang River     10     (hit) by a flood. In the peak, it reduced water flow by 3,500 cubic meters per second.

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.