下列有关存储器读写速度的顺序，正确的是( )。

A．RAM>CA,Che>硬盘>软盘

B．CA,Che>RAM>硬盘>软盘

C．CA,Che>硬盘>RAM>软盘

D．RAM>硬盘>软盘>CA,Che

Opposite the square is a very tall building,()top is well above the tops of the others.

A. its

B. whose

C. which

D. that