A.America is the largest country in the world
B.The United States lies next to Canada and Mexico
C.America covers most part of the North American continent
D.Mexico is to the north of Canada
[单选题]The United States covers a large part of the North American continent. Its
[单选题]The United States covers a large part of the North American continent. Its
[单选题]The United States covers a large part of the North American continent. Its
[单选题]The United States covers a large part of the North American continent. Its
[单选题]Cars are an important part of life in the United States. Without a car most
[单选题]Cars are an important part of life in the United States. Without a car most
[单选题]Cars are an important part of life in the United States. Without a car most
[单选题]Cars are an important part of life in the United States. Without a car most
[单选题]Cars are an important part of life in the United States. Without a car most
[单选题]The United States is well-known for its network ___(1)___ major highways de