部分焊合的锻造折叠可能（）
A、不产生显示
B、产生非常细的连续线状显示
C、产生宽的连续线状显示
D、产生断续线状显示
参考答案：D
June 25, 2011 _______a very bright night in Nanshan Middle School that will never
_______from memory. Our school has made great breakthrough in the field of education.
A．see; faded
B．witness; fade
C．saw; fade
D．witnessed; faded
简述发现足迹的方法。
