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课时作业(六) UNIT 6 At one with nature
一、阅读理解
(2021·湖北黄冈市高三月考)Imagine a group of elephants trampling(重步行走) through the streets of your city. Residents in some areas of Yunnan Province have recently experienced such a wild sight.
Recent video footage showing 15 wild Asian elephants roaming(漫步) the streets in a downtown area at night has gone viral. The elephants originally lived in the Xishuangbanna National Nature Reserve in south Yunnan but started heading north in December 2020. As of June 2, the herd was nearing Kunming, the capital of Yunnan Province, and was showing no sign of stopping.
The herd originally consisted of 17 elephants when it left the nature reserve, but two of the animals gained access to alcohol in a village and became drunk, according to local officials. The pair was later reported to have returned to Pu'er, a city north of Xishuangbanna Dai autonomous prefecture.
Wild Asian elephants can roam up to 40 kilometers a day, and an adult eats 150 to 200 kilograms of food each day. The 15 roaming elephants have damaged 561,333 square meters of crops and caused financial losses of nearly 6.8 million yuan on their 500kilometer journey. Why did the elephants travel so far from their original habitat? Guo Xianming, deputy director of the research institute at the Xishuangbanna Nature Reserve, said a lack of food was the animals' main problem. Supplies of the elephants' favorite food—plume grass(蔗茅)—have fallen due to invasive plant growth.
“About twothirds of them are now living outside reserves because the increasing forest canopy density(林冠密度) has resulted in food shortages,” said Chen Mingyong, a life sciences professor at Yunnan University.
The Asian elephant population in Yunnan, their sole habitat in China, has risen from 170 in the 1970s to 300, according to the Yunnan Provincial Forestry and Grassland Administration. Since 2008, Xishuangbanna has provided a “canteen(食堂)” for wild animals—mainly Asian elephants. It provides them with bamboo, corn,