單項(xiàng)選擇題Masts and derricks of cargo ships are made of（）.
A.steel
B.copper
C.bross
D.zinc
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1.單項(xiàng)選擇題My ship has been delayed（）poor visibility.
A.because
B.in reason of
C.owing to
D.for
2.單項(xiàng)選擇題My ship is（）No.5 berth for loading.
A.onto the wharf
B.moved astern
C.into the dock
D.moored alongside
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