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單項選擇題

A little （）may cause great damage or loss.

A.care
B.careless
C.carelessness
D.careful

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單項選擇題

Never operate hatch covers when the ship is（）.

A. in port
B. anchoring
C. rolling or pitching
D. at sea

單項選擇題

You are responsible for （）hatches today.

A.close
B.toclose
C.closing
D.closed

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