成牙本质细胞被包埋在修复性牙本质中,以后这些细胞变性,很像骨组织,称为()
A.罩牙本质
B.球间牙本质
C.骨样牙本质
D.透明牙本质
E.修复性牙本质
参考答案:C
市场信息分析可为政府进行()提供重要依据
A、市场管理
B、微观调控
C、宏观调控
D、国民经济管理
Kim bought a total of $2.65 worth of postage stamps in four denominations. If she bought an equal number of 5-cent and 25-cent stamps and twice as many 10-cent stamps as 5-cent stamps, what is the least number of 1-cent stamps she could have bought ?()
A.5
B.10
C.15
D.20
E.25