The boy is only . Today is his birthday.
A:five; five
B:fifth; five
C:fifth; fifth
D:five; fifth
位于我国地势第二级阶梯上的地形区是 ( )
给下面的字加一笔,看看变成什么字。
例:“十”字加“一”变成(土);
“日”字加“一”变成____;
“口”字加“一”变成____;
“大”字加“一”变成____。