小区规划中住宅用地、公建用地、道路用地、公共绿地等四项用地的总称是( )。
A．生活居住用地
B．小区用地
C．居住用地
D．新村用地
参考答案：C
Could you tell me ? [ ]
A. how long has she teached here
B. how long she has teached here
C. how long she has taught here
D. how long did she teach here
下列物质中氧原子数目与15.6gNa2O2中氧原子数一定相等的是（ ）
A．6.72LCO
B．6.6gCO2
C．8gSO3
D．9.8gH2SO4
