— How heavily it rained this early morning.

— Yes. But            of the students in our class was late for school.  [ ]

A. some

B. none

C. all

假设某数据库表中有一个地址字段，查找地址最后两个字为“8号”的记录的准则是( )。

A．Right([地址]，2)＝“8号”

B．Right([地址]，4)＝“8号”

C．Right(“地址”，2)＝“8号”

D．Right(“地址”，4)＝“8号”