如图所示,均匀圆柱体甲和乙放置在水平地面上,现沿水平虚线切去部分后,使甲、乙剩余部分的高度均为h。若此时甲、乙的剩余部分对地面的压力相等,则甲、乙原先对地面的压强P甲、P乙和F甲、F乙的关系是( )。
A:P甲<P乙,F甲<F乙
B:P甲<P乙,F甲>F乙
C:P甲>P乙,F甲>F乙
D:P甲>P乙,F甲<F乙
世界上最早的纸币——交子出现在( )
While I was walking along the lake, I saw some fish _____ out of the water.
—So you gave Mary your dictionary?
— ______.She said she'd return it to me when she could afford her own.