【单选题】When the child begins to suffer the consequences of his early mistakes, we should ______.
A.
help him correct the mistakes
B.
punish him for the wrongdoing
C.
leave him alone to work out the problem
D.
teach ourselves to understand their mistakes
【简答题】机床的主要技术参数包括尺寸参数、运动参数和()参数。
【简答题】()是描述磁场内某点磁场强弱和方向的物理量。
【简答题】We should not be afraid of (make) ______ mistakes when speaking a foreign language.
【简答题】机床的主要技术参数包括主参数、尺寸参数、(__)、(__)。
【简答题】机床的主要技术参数包括()、()、( )、( )。
【简答题】机床的主要技术参数包括( )、( )、( )、( )。