新高级阅读前（双语）83（807）

PASSAGE EIGHTY-THREE

Yellowstone gray Wolf

1.After years of heated debate, gray wolves were reintroduced to Yellowstone National Park. Fourteen wolves were caught in Canada and transported to the park.   

2.By last year, the Yellowstone wolf population had grown to more than 170 wolves.

3.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.   

4.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.

5.The disappearance of the wolves had many unexpected results. Deer and elk populations—major food sources for the wolf—grew rapidly.   

6.These animals consumed large amounts of vegetation, which reduced plant diversity in the park.   

7.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.

8.As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park.   

9.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.

10.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.   

11.Today, the debate continues over how well the gray wolf is fitting in at Yellowstone.

12.Elk, deer, and coyote populations are down, while beavers and red foxes have made a comeback.   

13.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.

第八十三篇

黄石灰狼

1.经过多年的激烈争论，灰狼被重新引入黄石国家公园。14只灰狼在加拿大被捕获并被运送到公园。

2.到去年，黄石公园的灰狼数量已经增长到170多只。

3.灰狼曾经在黄石地区和美国大陆的大部分地区随处可见，但它们逐渐被人类的发展所取代。

4.到20世纪20年代，灰狼几乎从黄石地区消失了。他们向北深入到加拿大的森林深处，那里的人类较少。

5.灰狼群的消失带来了许多意想不到的结果。鹿和麋鹿是灰狼的主要食物来源，它们的数量迅速增长。

6.这些动物消耗了大量的植被，减少了公园里的植物多样性。

7.在没有灰狼的情况下，土狼的数量也迅速增长。土狼杀死了公园里大部分的红狐，并完全赶走了公园里的海狸。

8.早在1966年，生物学家就要求政府考虑将灰狼重新引入黄石公园。

9.他们希望灰狼能够控制麋鹿和土狼的问题。许多农民反对这项计划，因为他们担心灰狼会杀死他们的农场动物或宠物。

10.政府花了近30年的时间来制定一项重新引入灰狼的计划。美国鱼类和野生动物管理局仔细监测和管理黄石公园的狼群。

11.今天，关于灰狼如何适应黄石公园的争论仍在继续。

12.麋鹿、鹿和土狼的数量下降了，而海狸和红狐的数量又回来了。

13.黄石灰狼项目一直是一个有价值的实验，帮助生物学家决定是否也将狼重新引入该国的其他地区。