我国教学的基本组织形式是______。
A．课堂教学
B．个别教学
C．小组教学
D．现场教学
参考答案：A
______ you have known everything about it, it is unnecessary for me to talk about it again.
A．As soon as
B．Now that
C．Although
D．While
手工电弧焊时如何选用焊条直径？
