在职申硕英语考试

【单选题】Visiting a National Park can be relaxing, inspiring, but it can also be disturbing.As you drive into Rocky Mountain National Park, you will see starving elk, damaged mead ows and dying forests. Our parks are growing old because we have mistakenly protected them from natural processes, such as fire, predation, and insects. We believed that we were saving these remnants of wildAmerica, but actually we have "protected" them to death. If we want to save our National Parks, the National Park Service must change its management priorities to prevent over population of animals and to restore natural process in the forest in order to prevent their stagnation and "death" by old age. We must act soon: our parks are dying of old age because we have altered the forces in nature that keep them young and strong.
By tracing the history of our National Parks, we can understand the problem and see why we need active management. In the early part of the 20th century, settlers exploited wildlife heavily, resulting in neat-extinction of many species. Therefore, several National Parks were established byCongress primarily to save endangered animals. However, stricter wildlife protection laws and improved wildlife management techniques resulted in greater populations of animals overcrowding in areas of high concentration, such as the Yellowstone elk herds.Complicating the problem, the National Park Service in the early part of the 20th century adopted a policy of aggressive predator elimination, thus reducing natural wildlife population control. Subsequently, elk and deer populations exploded in many National Parks, resulting in severe damage to native vegetation. Vigorous forest fire and insect suppression in the National Parks throughout the 20th century further altered the natural environment by allowing forests to over-mature, without natural thinning processes. Park managers thought that they were protecting the land, but actually they were removing important controls from the forest ecosystems.
Clearly, we must act immediately if we want to pass down to our children and grandchildren the green legacy of our National Parks; we must step in and restore the natural processes which we have altered through our well-intentioned, but misguided, policies in the past.
According to the author, there would not be starving elks, damaged meadows or dying forests in National Parks if
A、the government introduced stricter wildlife laws
B．the National Park Service employed more wildlife management techniques

C、the natural processes were restored
D．we continued to improve our natural environment

网考网参考答案：C
网考网解析：
[解析] A、B两项与文章的意思相反；D项与文章的意思不相符。根据文章所讲的“应该恢复自然进程而不是用严格的保护法令或野生动物保护的技术”可知，C项为正确答案。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>