A:若溶液甲呈浅绿色,则原黑色固体粉末中一定含有Fe
B:若固体乙呈红色,则原黑色固体粉末中一定含有CuO
C:若溶液甲呈蓝色,则固体乙中一定不含Fe
D:若固体乙呈黑色,则原黑色固体粉末中一定含有C
This is my daughter. _____________ name is Jenny. ____ is seven.
下列估测值中,最符合实际的是( )
its children hungry Tian'anmen Square fall women difficult her stop the Palace Museum