下列说法中,与化学变化中遵循的质量守恒定律不相符合的是( )
选项
物质(括号内为杂质)
选用试剂
A
C(Fe)
盐酸
B
CaCl2溶液(HCl)
Ba(OH)2溶液
C
CO2(CO)
碱石灰(CaO和NaOH的混合物)
D
NaOH溶液Ca(OH)2
K2CO3溶液
– ________ of us think the English examination was difficult.
– But I still don't think ________ could pass it.
The is ____ (hard/soft).