单项选择题
A.Utah B.Colorado C.New Mexico D.Arizona
Who signed the bill to establish Yosemite National Park...
单项选择题Who signed the bill to establish Yosemite National Park?（）
A.President George Washington B.President Theodore Roosevelt C.President Franklin Roosevelt D.President Ulysses S. Grant
Which of the following statements about Old Faithfulare...
多项选择题Which of the following statements about Old Faithfulare correct?（）
A.It’s the name of a geyser in Yellow Stone National Park. B.It’s named after a man who was faithful. C.It’s the first geyser receiving a name. D.It erupts at regular intervals of time.
What are the two reasons to shape the Grand Canyon?（）A....
多项选择题What are the two reasons to shape the Grand Canyon?（）
A.seismic upheaval B.earthquake C.glaciation D.grits in Colorado river
