Originally constructed around 256 BCE by the State of Qin     1     an irrigation and flood control system, Dujiangyan is a remarkable example of ancient engineering skill and is still     2     use today.

During the Warring States period, people who lived along the banks of the Min River     3     (trouble) by annual flooding. Qin governor and irrigation engineer Li Bing investigated the problem thoroughly. He led a team     4     (construct) a levee(堤坝) to redirect a part of the river’s flow. Then they cut     5     channel through Mount Yulei to let the water flow through it. After the system was finished , no more floods     6     (occur). What’s more, it made Sichuan one of the most productive agricultural     7     (region) in China because the redirected water from the Min River could be used for irrigation. If you visit Dujiangyan, you will see an     8    (usual) construction that looks like a fish’s mouth. This famous attraction, Yuzui, together with two other important parts, namely, Feishayan and Baopingkou, was     9     (scientific) designed to control the water flow throughout the year.

    10     (recognize) as a UNESCO heritage site, Dujiangyan has irrigated farms while preventing floods for over 2,000 years.

The name "Zhurong",     1    means the god of fire in Chinese mythology, was revealed on Saturday at the opening ceremony of this year's events     2    (mark) the Space Day of China held in Nanjing, capital city of east China's Jiangsu Province.

The name    3    (indicate) Chinese people's blessing for the rover to ignite(点燃) the flame of China's planetary exploration. The rover is 1.85 meters high    4     weighs about 240 kilograms,     5     a designed lifespan of three Martian months – equal to about 92 Earth days. It will probe the composition of the Martian surface, the distribution（分布） of    6    ( material), the geological structure and the meteorological（气象的） environment.

After landing, "Zhurong" the rover will be activated and conduct scientific exploration for     7    (it) expected lifespan of at least 90 Martian days,     8    (approximate) three months on Earth. The mission will study Mars' climate, geology, physical fields and internal structure.     9    (support) the study, "Zhurong"     10    (equip) with multiple scientific payloads.