菜单控件只有一个事件（）
A、MouseUp
B、Click
C、DBClick
D、KeyPress
参考答案：B
一个等腰三角形三边长度之比3：5：5，周长是52厘米，这个等腰三角形底边长是______厘米．
He is_____his elder brother.
A．as a tall fellow as
B．as tall a fellow as
C．so tall a fellow as
D．taller a fellow than
