单项选择题

A．15 years
B．50 years
C．six decades
D．four decades
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单项选择题
A．In the days before the vote, the Clinton Administration had been careful to describe the referendum as an internal matter.B．It is critical for the United States to have a stable northern neighbor.C．Mr. Clinton discussed the outcome of the referendum Tuesday with Canadian Prime Minister.D．Both pacts will be discussed further with united Canad
A．In the days before the vote, the Clinton Administration had been careful to describe the referendum as an internal matter.
B．It is critical for the United States to have a stable northern neighbor.
C．Mr. Clinton discussed the outcome of the referendum Tuesday with Canadian Prime Minister.
D．Both pacts will be discussed further with united Canad
单项选择题
A．longest defended borderB．longest undefended borderC．longest undefined borderD．longest coastal border
A．longest defended border
B．longest undefended border
C．longest undefined border
D．longest coastal border
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