單項(xiàng)選擇題The ship（）about 1/2 miles southward of the lighthouse.
A.moors
B.moor
C.is moored
D.mooring
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A.which
B.where
C.when
D.how
2.單項(xiàng)選擇題The port clearance for a ship should be granted（）the completion of loading or discharging in the port.
A.before
B.when
C.after
D.during
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