窄轨轨道对轨缝的要求是：地面轨道轨缝夏季不大于（），冬季不大于10mm，无三处以上连续瞎缝；井下直道不大于（），弯道不大于（）。

A.7mm

B.10mm

C.5mm

D.8mm

Oh, You're back at work? How was your holiday? （）

A.We had rain every day and stayed at the hotel most of the time.

B.The ten-day holiday was not long enough.

C.I was missing you when I was on holiday.

D.I heard you were on holiday, too.