A:HCl
B:H2S
C:pH3
D:NH3、
目前石家庄市正在进行地铁建设,广泛使用金属材料,下列不属于合金的是( )
Someone thinks if they have much money, they will have happiness. However, other people's opinions are t____ different.
法国启蒙运动的开拓者和著名的思想家是 ____。