(
课件网) 学案(三) 高考语篇的价值发掘———提升学科素养 2017·全国卷Ⅲ·阅读理解C篇———对接课标主题：自然环境、自然遗产保护 After years of heated debate, 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 there in the Yellowstone area and much of the continental United States, but they were gradually displaced by human development. By the 1920s, wolves had practically disappeared from the Yellowstone area. They went farther north into the deep forests of Canada, where there were fewer humans around. The disappearance of the wolves had many unexpected results. Deer and elk populations — major food sources (来源) for the wolf — grew rapidly. These animals consumed large amounts of vegetation (植被), which reduced plant diversity in the park. In the absence of wolves, coyote populations also grew quickly. The coyotes killed a large percentage of the park's red foxes, and completely drove away 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 with 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. ?好题不厌百回做，每做一次都有新发现 1．What is the text mainly about A．Wildlife research in the United States. B．Plant diversity in the Yellowstone area. C．The conflict between farmers and gray wolves. D．The reintroduction of wolves to Yellowstone Park. 解析：主旨大意题。纵观全文可知，本文主要谈了将灰狼重新引入黄石国家公园的原因以及这一举措的成效等，故选D。 语篇解读：本文是一篇说明文。在争议了几年之后黄石国家公园终于把灰狼重新引入公园，以保持公园内生态的平衡。 答案：D 2．What does the underlined word “displaced” in paragraph 2 mean A．Tested. B．Separated. C．Forced out. D．Tracked down. 解析：词义猜测题。由第二段第一句话可知，曾经在黄石公园里到处都能看见灰狼，下文提到但后来由于人类的发展灰狼数量逐渐减少，几乎消失了，因此可以推出，displaced意为“被迫离开”，故选C。 答案：C 3．What did the disappearance of gray wolves bring about A．Damage to local ecology. B．A decline in the park's income. C．Preservation of vegetation. D．An increase in the variety of animals. 解析：推理判断题。 第三段提到由 ... ...
