如果在载玻片上写一个“p”字,用低倍镜观察,视野内所见的图象是( )
A:b
B:d
C:q
D:p
“女大十八变,越变越好看”,与这种变化直接相关的器官是( )
— Must I wash my skirt tonight?
— No, you . You can wash it tomorrow.
关于变异的说法,不正确的是 ( )