Although parks of all sizes and types exist at any level, the national parks, in particular, tend ____1____ (catch) our attention because of their large size and variety. They are ____2____ (treasure) of American heritage (遗产). How did the national park system come about? On a cool, starry night in mid-September 1870, four men relaxed before a campfire along the Firehole River in ____3____ is now northwestern Wyoming. They ____4____(be) part of a 15-member exploring party that had spent almost five awesome weeks in witness of the natural beauties there.
尽管在任何层面上都存在着各种规模和类型的公园，但特别是国家公园，由于其规模大、种类多，往往会引起我们的注意。它们是美国遗产的珍宝。国家公园系统是如何产生的?1870年9月中旬，在一个凉爽、繁星点点的夜晚，四个男人在火洞河边的营火前放松，这里现在是怀俄明州的西北部。他们是一个由15人组成的探险队的一部分，他们花了近五个星期的时间来见证那里的自然美景。
What should ____5____(do) with such a beautiful place? They wondered out loud. This area, with ____6____ (it) unique and breathtaking natural beauty, must be well preserved ____7____ all people of the nation to enjoy — as a national park. They all agreed and vowed (承诺) to promote the idea at the ____8____ (complete) of their journey. Their promotional work paid off. Two years later, 18 years before Wyoming became a state, Yellowstone became the first national park in the United States and the world. Yellowstone was the ____9____ (large) United States national park — 2.2 million acres — until Wrangell-Saint Elias in southern Alaska, _____10_____ became a national monument in 1978, took the honors as a national park in 1980 with 12.3 million acres.
对于这样一个美丽的地方，我们应该做些什么呢?他们大声地问。这个地区拥有独特而令人惊叹的自然美景，必须作为国家公园加以保护，供全国人民欣赏。他们都同意并承诺在他们的旅程结束时推广这个想法。他们的宣传工作得到了回报。两年后，在怀俄明州成为一个州的18年前，黄石公园成为美国和世界上第一个国家公园。黄石公园是美国最大的国家公园，占地220万英亩，直到1978年阿拉斯加南部的弗兰格尔-圣伊莱亚斯成为国家纪念碑，1980年以1230万英亩的面积获得国家公园的荣誉。
