个人幸福与职业价值的和谐统一，既是广大教师的追求，也是教育管理的重要原则。
参考答案：对
一种细菌的半径为3.9 ×10﹣5m，用小数表示应是（ ）．
There is ______ milk at home. We have to buy some this afternoon. [ ]
A. a little
B. little
C. a few
D. many
