直线轨向在轨头内侧项面下（）处测取最大矢度。
A.12mm
B.14mm
C.16mm
D.18mm
参考答案：C
简述前苏联蒙太奇学派的形成过程中的准备过程。
“Youth” is regarded by many people as a time in their life _____ fun, passion, and imagination seem limitless.
A．that
B．which
C．when
D．where
