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
点击查看答案&解析
相关考题
-
判断题
UNESCO designated Redwood National Park a world heritage site because of its rare ecosystem and cultural history. -
单项选择题
How deep is the Grand Canyon?（）
A.1 kilometer
B.1 mile
C.18 kilometers
D.18 miles -
单项选择题
Conjure up means（）。
A.阻断
B.幻想
C.连接
D.跳出
