阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式 The Great Wall was listed as a World Heritage by UNESCO in 1987. Just like a dragon, it winds up and down across deserts, grasslands and mountains,{#blank#}1{#/blank#}( run) approximately 21,196 kilometers from east to west.
The{#blank#}2{#/blank#}( construct) of the Great Wall was not that easy, {#blank#}3{#/blank#}drew heavily on the local resources for building materials. The walls were{#blank#}4{#/blank#}( original) built in the Spring & Autumn Period and the Warring States Period. Emperor Qin Shi Huang succeeded in his effort to have them joined together. Since then, the Great Wall{#blank#}5{#/blank#}( serve) as a monument of the Chinese nation throughout history.
With {#blank#}6{#/blank#}history of about 2,700 years, some parts of the Great Wall are now {#blank#}7{#/blank#}ruins or have disappeared. However, the Great Wall of China is still one of the most appealing{#blank#}8{#/blank#}(attraction) all around the world owing to its historical significance. The best-known part of the Great Wall of China, Badaling, {#blank#}9{#/blank#}(locate) 43 miles northwest of Beijing, attracts thousands of national and foreign tourists every day.
Today, the Great Wall{#blank#}10{#/blank#}(recognize) as one of the most important impressive architectural achievements in history.