IP地址分为（）等几类。
A.A、B、C
B.A、B、C、D、E
C.A、B、C、D、E、F
D.A、B、C、D
参考答案：B
_____ herself to science, the great scientist took little notice _____ the honors given to her.
A．Devoted, of
B．Devoting, of
C．Devoted, about
D．Devoting, about
选取多个图形对象，应按下（）键单击。
A、CTRL
B、ALT
C、SHIFT
D、SPACE
