2 . 语法填空
The Dujiangyan is the oldest man-made water system in the world, and a wonder in the development of Chinese agriculture. 1 (build)over 2,200 years ago in what is now Sichuan Province in Southwest China, this amazing engineering 2 (achieve)is still used today.
In ancient times, the region where Dujiangyan now stands 3 (suffer)from regular floods from the Minjiang River. 4 (help)the victims of the flooding, Li Bing, 5 region governor, together with his son, decided to find a solution. Li designed a series of channels built at different levels along Mount Yulei that would take away the floodwaters while leaving the river flowing naturally. 6 (good)still, the extra water could be directed to the dry Chengdu Plain, making 7 suitable for farming.
Once the system 8 (finish), no more floods happened and the people were able to live 9 (peaceful). Today, Dujiangyan is admired by scientists from around the world because of one feature. Unlike modern dams, 10 the water is blocked with a huge wall, Dujiangyan still lets waterflow through the Minjiang River naturally, making the ecosystem(生态系统)and fish populations exist in peace.