如果一个正多边形的外角是15°,则这个多边形是 [ ]
A.正十边形
B.正十二边形
C.正二十四边形
D.正二十边形
答案:C
He excitedly told the reporter that _____ the Nobel Prize for physics was beyond his wildest dreams.
A.given
B.to give
C.giving
D.being given
不管一个对象的属性如何设置,程序运行时始终都能接收焦点的方法是().
A、用Tab键
B、用鼠标
C、用方向键
D、不能实现