A:当导体两端的电压为0时,电阻为0
B:该导体的电阻随电压的增大而减小
C:当导体两端的电压为0时,电阻为5Ω
D:当导体两端的电压为2V时,电流为0.6A
2015的相反数是( )
I____(thought/ think) it was easy to do before.