單項選擇題

The pilot needs the ship to go forward very slowly. The order should be （）.

A. “Slow ahead”
B. “Dead slow ahead”
C. “Astern”
D. “Dead slow astern”

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單項選擇題

Stand （）engine !

A.with
B.by
C.in
D.to

單項選擇題

“Keep （）to the lighthouse”, said the pilot.

A.directly
B.straight
C.straightly
D.direct

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