党的“十八大”报告中提出了进一步加强教育均衡发展。下面措施中最早体现均衡教育思想的是( )
A:孔子创办私学
B:提出“罢黜百家、独尊儒术”
C:八股取士
D:开办京师大学堂
As teenagers,it is not until we are able to face difficulties bravely________we are mature enough.