游标卡尺尺身和游标上的刻线间距都是 l mm。
参考答案：错
As far as many parents are concerned, what a child should do，________， is to do well in his studies.[ ]
A．in all
B．above all
C．after all
D．at all
提出过“兼相爱”、“爱无差”的中国古代思想家是（）。
A.孔子
B.孟子
C.墨子
D.老子
