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單項選擇題

I am proceeding at a slackened speed. Here SLACKENED stands for（）.

A.reduced
B.increased
C.normal
D.half

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I am proceeding（）reduced speed.

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

單項選擇題

Get everything ready（）sailing.

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