Unit 3 Section Ⅰ Reading and Thinking -Comprehending（Word 教师用书）-【状元桥·优质课堂】2022-2023学年新教材高中英语选择性必修第一册（人教版2019）

狼群拯救了黄石公园？哪有那么简单！ (2017·全国Ⅲ阅读精编)After years of heated debate1, gray wolves were reintroduced to Yellowstone National Park.Fourteen wolves were caught in Canada and transported to the park.By last year, the Yellowstone wolf population had grown to more than 170 wolves. Gray wolves once were seen here and there2 in the Yellowstone area and much of the continental United States, but they were gradually displaced3 by human development.In the 1920s, the incident became serious.They went farther north into the deep forests of Canada, where there were fewer humans around.The disappearance of the wolves had many unexpected results4.Deer and elk populations—major food sources for the wolf—grew rapidly.These animals consumed(吃) large amounts of vegetation(植被), which reduced plant diversity in the park.In the absence of5 wolves, coyote populations also grew quickly.The coyotes killed a large percentage of the park's red foxes, and completely drove away6 the park's beavers. As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park.They hoped that wolves would be able to control the elk and coyote problems.Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets. The government spent nearly 30 years coming up with7 a plan to reintroduce the wolves.The U．S.Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone.Today, the debate continues over how well the gray wolf is fitting in at Yellowstone.Elk, deer, and coyote populations are down, while beavers and red foxes have made a comeback.The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well. 【词块采撷】 1．heated debate 激烈的辩论 2．here and there 到处 3．be gradually displaced 逐渐被取代 4．unexpected results 意想不到的结果 5．in the absence of 缺乏 6．drive away 驶离；驱走 7．come up with a plan 提出计划 【亮句应用】 where引导定语从句 (2021·北京写作)I've just been told