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若复数,则a + b =( )
A.0 B.1 C.-1 D.2
若复数,则z2010=
1
0
-1
(1+i)1005
A.-1 B.0 C.1 D.2
若复数(其中是虚数单位),则=( )
A.-2 B.-1 C.0 D.2