每年平衡预算每年都坚持支出大于收入的平衡原则
参考答案：错
As a developing country, we must keep ______ with the rapid development of the world economy.
A．move
B．step
C．speed
D．pace
目前小鼠造血干细胞的常用标记物为（）
A.CD34+、CD59+、Thy1+、CD38low/-、C-kit-/low、Lin-
B.CD13+、CD44+、CD73+、CD54+
C.Oct4+、Nanog+、Klf4+、c-Myc+
D.CD34low/-、SCA-1+、Thy1+/low、CD38+、C-kit+、Lin-
E.Snail+、Sox10+、FoxD3+、Sox9+
