主张“邻近的国家互相望得见,鸡鸣狗叫的声音互相听得见,而人民直到老死也不相往来”,回到“小国寡民”社会的思想家是( )
A:老子
B:孔子
C:孙子
D:孟子
小鹭设计的“探究影响滑动摩擦力大小的因素”实验方案如图所示
需____
确____
许____
刻____
He is organized and is often . I hope he will have more at his business.