原文Although parks of all sizes and types exist at any level, the national parks, in particular, tend ____41____ (catch) our attention because of their large size and variety. They are ____42____ (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 ____43____ is now northwestern Wyoming. They ____44____(be) part of a 15-member exploring party that had spent almost five awesome weeks in witness of the natural beauties there.
What should ____45____(do) with such a beautiful place? They wondered out loud. This area, with ____46____ (it) unique and breathtaking natural beauty, must be well preserved ____47____ all people of the nation to enjoy — as a national park. They all agreed and vowed (承诺) to promote the idea at the ____48____ (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 ____49____ (large) United States national park — 2.2 million acres — until Wrangell-Saint Elias in southern Alaska, _____50_____ became a national monument in 1978, took the honors as a national park in 1980 with 12.3 million acres. 译文尽管各级都有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。它们是美国遗产的瑰宝。国家公园系统是如何形成的？1870年9月中旬，一个凉爽的星空之夜，四名男子在怀俄明州西北部的火洞河沿岸的篝火前放松。他们是一个由15名成员组成的探险队的一员，该探险队花了近五周的时间见证那里的自然美景。
这么漂亮的地方该怎么办？他们大声纳闷。这个地区有着独特而令人惊叹的自然美景，必须得到很好的保护，让全国人民都能欣赏到——作为一个国家公园。他们都同意并发誓在他们的旅程中推广这一想法。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，直到阿拉斯加南部的兰格尔·圣埃利亚斯于1978年成为国家纪念碑，1980年以1230万英亩的土地成为国家公园。

1 段译 尽管各级都有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。它们是美国遗产的瑰宝。国家公园系统是如何形成的？1870年9月中旬，一个凉爽的星空之夜，四名男子在怀俄明州西北部的火洞河沿岸的篝火前放松。他们是一个由15名成员组成的探险队的一员，该探险队花了近五周的时间见证那里的自然美景。

Although parks of all sizes and types exist at any level, the national parks, in particular, tend ____41____ (catch) our attention because of their large size and variety.句译 尽管公园所有尺寸和类型的存在以任何水平，国家公园，尤其，倾向 抓住我们的注意力因为他们的大尺寸和多样性。They are ____42____ (treasure) of American heritage (遗产).句译 有珍宝美国遗产的。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 ____43____ is now northwestern Wyoming.句译 如何国家公园系统产生？在一个凉爽星星闪耀的夜晚中九月1870，四个男人放松在前篝火沿着FR在 是现在东北的W。They ____44____(be) part of a 15-member exploring party that had spent almost five awesome weeks in witness of the natural beauties there.句译 他们 是部分15成员的探索党已经花几乎五个令人惊叹的周在看自然的美那里。

2 段译 这么漂亮的地方该怎么办？他们大声纳闷。这个地区有着独特而令人惊叹的自然美景，必须得到很好的保护，让全国人民都能欣赏到——作为一个国家公园。他们都同意并发誓在他们的旅程中推广这一想法。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，直到阿拉斯加南部的兰格尔·圣埃利亚斯于1978年成为国家纪念碑，1980年以1230万英亩的土地成为国家公园。

What should ____45____(do) with such a beautiful place? 句译 什么应该做对于如此美丽的地方？They wondered out loud.句译 他们想知道大声地。This area, with ____46____ (it) unique and breathtaking natural beauty, must be well preserved ____47____ all people of the nation to enjoy — as a national park.句译 这个地区，有了 独一无二的和激动人心的自然美，必须是好地保护 所有人国家的去享受——作为国家公园。They all agreed and vowed (承诺) to promote the idea at the ____48____ (complete) of their journey. Their promotional work paid off.句译 他们都同意并承诺去提升想法在 完成他们旅程的。他们的促销的工作付清了。Two years later, 18 years before Wyoming became a state, Yellowstone became the first national park in the United States and the world.句译 两年后，18年在前W成为一个州，黄石成为第一个国家公园在美国和世界。Yellowstone was the ____49____ (large) United States national park — 2.2 million acres — until Wrangell-Saint Elias in southern Alaska, _____50_____ became a national monument in 1978, took the honors as a national park in 1980 with 12.3 million acres.句译 黄石是 大美国国家公园——2.2百万英亩——直到WSE在南阿拉斯加 变成国家的纪念碑在1978，拿荣誉作为国家公园在1980用12.3百万英亩。

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答案 1.to catch; 2.treasure; 3.what; 4.were; 5.be done; 6.its; 7.for; 8.completion; 9.largest; 10.which