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

During the Warring States Period, people who lived along the banks of the Minjiang River    2    (trouble) by flooding. Irrigation engineer Li Bing investigated the problem    3    (thorough). He led a team to construct a levee (防洪堤) to redirect a part of the river’s flow. Then they cut    4    channel through Mount Yulei to let the water flow through it. After the system was finished, no more floods    5    (occur). What’s more, it made Sichuan one of the most productive agricultural    6    (region) in China because the redirected water from the Minjiang River could be used for irrigation. If you visit Dujiangyan, you will see an unusual construction    7    looks like a fish’s mouth. This famous    8    (attract), Yuzui, together with two other important parts, namely Feishayan and Baopingkou, was scientifically designed    9    (control) the water flow throughout the year.

    10    (recognize) as a UNESCO World Heritage Site, Dujiangyan has irrigated farmland while preventing floods for over 2,000 years.

People came to the area that's now New Mexico more than 12,000 years ago. Experts think they migrated from    1    is now Russia across a land bridge    2    (call) the Bering Strait during the last Ice Age. Thousands of years    3     (late), native American tribes including the Apache, Zuni, Navajo and Pueblos lived on the land.

In 1540, a Spanish    4    (explore), Francisco Vazquez de Coronado, came to the area in search of cities made of gold     5    were rumored (谣传) to exist in the America. He didn't discover treasure, but over the next century the Spanish colonized the land. Then in 1821, Mexico declared its independence    6    Spain, and the area became part of Mexico. But after the United States won the Mexican- American War in 1848, New Mexico became an American territory. In 1912, it    7    (declare) the 47th state.

When the Spanish set out to explore the region, they hoped to find land as    8    (value)as what they had found earlier in Mexico. So they    9    (name) the area Nueva Mexico.(“Nueva” means “new” in Spanish.) As for the word" Mexico”, some experts think it's a version of a name that the Aztecs (a cultural group from Mexico) had for one of their gods.

The state has beautiful scenery from    10     ( mountain) to forests and deserts. This earns it the nickname the Land of Enchantment.