题目

阅读理解 On Aug. 13, four Chinese irrigation (灌溉) sites won global recognition and were added to the 2018 list of Heritage Irrigation Structures. Let's look at these amazing sites. Dujiangyan Dujiangyan is the oldest and only surviving dam-less irrigation system in the world. More than 2,000 years ago, Chengdu was threatened by frequent flooding from the Minjiang River. Li Bing, a local official, studied the situation and designed the Dujiangyan irrigation system, which could control the water flow from the mountains to the Chengdu Plain throughout the year. The Dujiangyan irrigation system has created harmony between man, earth and water. It is the last remaining ecological project of its kind. Changqu Canal Changqu Canal is in the city of Xianyang in Hubei province. It is 48 km long and was originally used to transport soldiers. It was later used for irrigation – in fact, it is still used to provide water to more than 20 square km of farmland. "The recognition of irrigation heritage is intended to help us better use ancient irrigation projects that are still functioning and preserve our precious historical and cultural heritage," says a notice on the official website of the Hubei provincial government. Lingqu Canal Lingqu Canal is located in Xing'an county, near Guilin, Guangxi province. As the oldest canal in the world, it has been described as "another wonder of the world". The design of the canal is unique. "It magically shows the ease of transportation along the north and south waterways," according to the Travel China Guide. Jiang-Xi Dam The Jiang-Xi Dam in Zhejiang province actually consists of two dams–the Jiang and Xi dams. Built in the 14th century it improved life for local people for centuries. "It not only plays an important role in irrigation, but also responds to environmental governance," said Ding Kunlun, vice chairman of International Commission on Irrigation and Drainage. （1） What do we know about Dujiangyan? A . It has no dam and has existed for over 2000 years. B . Li Bing was tasked to design it as a local official. C . It could control the Minjiang River most of the time in a year. D . After it was built Chengdu was never threatened by flood. （2） What was the use of Changqu Canal at first? A . Military purpose. B . Water supply. C . Farmland irrigation. D . The ease of transportation. （3） Which of the following has an influence on the ecological environment according to the passage? A . Dujiangyan and Changqu Canal. B . Dujiangyan and Jiang Xi Dam. C . Changqu Canal and Jiang Xi Dam. D . Dujiangyan and Lingqu Canal. 答案： A A B

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