City of Niagara Falls ______ .
A.is a city of the United States
B.is a city of Canada
C.is city owned by both Canada and the United states
D.refers to two cities, owned separately by Canada and the United States
正确答案是D
City of Niagara Falls ______ .
A.is a city of the United States
B.is a city of Canada
C.is city owned by both Canada and the United states
D.refers to two cities, owned separately by Canada and the United States
正确答案是D