A
B
C
D
X
FeCl2溶液
Fe
FeSO4溶液
Y
FeCl3
CuCl2
Al
Fe2(SO4)3
Z
Cl2
NaOH溶液
Cu
A:A
B:B
C:C
D:D
—Because Sally is ____ (he) sister.
● Attraction
- - Road
River