A.reducedB.increasedC.normalD.halfI am proceeding at a ……

单项选择题I am proceeding（）reduced speed.

A.at
B.with
C.on
D.within

单项选择题Get everything ready（）sailing.

A.on
B.ahead of
C.prior to
D.in front of

单项选择题Captain said that very clearly so that nobody was in any（）about what was meant.

A.doubt
B.question
C.wonder
D.consideration

单项选择题Can you sign the Mate’s Receipt（）batches?

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

单项选择题Can you offset the shortage（）the sweepings?

A.by
B.for
C.with
D.against