文章大意：这是一篇应用文。中国的三个地点——一个古老的产茶区、一个游牧畜牧业区和一个雨养石阶农业系统——被正式认定为全球重要农业文化遗产系统，因为它们以独特的方式利用传统实践和知识，同时保持独特的生物多样性和生态系统。文章对这三个地方进行了详细介绍。
1 . 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。
Three sites in China˗˗an ancient tea-producing area, a nomadic livestock-rearing region and a rain-fed stone terrace farming system˗˗were formally recognised as Globally Important Agricultural Heritage Systems (GIAHS), for their unique ways of using traditional practices and knowledge while maintaining unique biodiversity and ecosystems.
An ancient tea-producing area (中国福建安溪铁观音茶文化系统)
Tea production in Anxi, Fujian, is believed to date from the 10th century, with its most famous tea, Tieguanyin, coming into 1 (exist) in the 18th century. It belongs to the Oolong tea category between green tea and black tea. Local farmers’ unique technique includes wisely managing the natural environment to guarantee the production of 2 exceptional quality tea leaf.
A Grassland nomadic system (中国内蒙古阿鲁科尔沁草原游牧系统)
The Ar Horqin grassland nomadic system in northern China’s Inner Mongolia region has a variety of ecosystems, such as forests, grasslands, wetlands, rivers with important ecological 3 (function). To adapt 4 the fragile grassland environment, the ancestors of today’s herders (牧民) adopted a typical nomadic lifestyle. By 5 (constant) moving grasslands, they ensured the protection of vegetation (植被) and full use of water resources, 6 (avoid) soil degradation (恶化) and overgrazing and bringing a steady supply of livestock products.
The Shexian Dryland Stone Terraced System (中国河北涉县旱作石堰梯田系统)
The Shexian Dryland Stone Terraced System in Hebei, is a rain-fed agricultural system dating back to the 13th century. 7 (surround) with mountains, the stone terraced fields still play an important role in making 8 possible to farm on the steep slopes. The county is well-known for corn, soybean and other agricultural and forestry products. With this variety of crops and farming techniques, local communities 9 (manage) to guarantee their food security and well-being over hundreds of years, while shaping a remarkable landscape 10 bears witness to their ability to live with their environment.
