（）不是教育研究观察记录表中的常用的记录方法
A.拍摄
B.填表
C.画图
D.写笔记
参考答案：C
It's the fact _____ he doesn't know his own birthday surprises us all．
A．which, which
B．which, that
C．that, that
D．that, which
正面投影与水平面投影的交线称为（）.
A.X轴
B.Y轴
C.Z轴
D.原点
