模板坯料长为70mm、宽60mm、厚1.5mm、中心大孔直径为（）、各小孔直径为2mm。
A、4mm
B、6mm
C、8mm
D、10mm
参考答案：C
They looked at each other, ______.
A．Astonishing
B．astonished
C．to astonish
D．astonishingly
In the city, I saw so grand a National Day celebration _______ I never dreamed of．
A．which
B．as
C．that
D．when
