题型：语法填空（语篇） 题类：常考题 难易度：困难
辽宁省抚顺市六校协作体2019-2020学年高二上学期英语期末考试试卷
Grand Canyon National Park recently turned 100 years old. The (nature) wonder in northern Arizona became one of America's early national parks in 1919. A century later, about 6 million people a year visit the park, is about the size of the state of Delaware.
Native tribes (部落) had many names for the huge canyon. But in 1869, (explore) John Wesley Powell gave it a name that stuck: the Grand Canyon. The canyon isn't the world's longest or deepest. But it surely is grand. It offers beautiful views.
The canyon itself is far (old) than the park. No one knows exactly old the canyon is. The rocks the bottom are about 1.8 billion years old.
Humans first came to the area about 12,000 years ago. They left behind a large number of stone tools. For the past century, tools (make) from small sticks (find) in some of the canyon's caves.
Plenty of animals live in the park. Desert bighorn sheep are largest animals in the Grand Canyon. (measure) 300 pounds, they climb over the rocks. The park is home to almost 375 kinds of birds and a few living things that can be found nowhere else.
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