复数1-i1+i=(1-i)(1-i)(1+i)(1-i)=1-2i+i22=-2i2=-i
故选D
生物体的各种性状都是由什么控制的（ ）
A．基因
B．染色体
C．DNA
D．蛋白质
Apart from being applied in such fields _______ communication, finance and trade, computers also
play an very important part in making mobile phones, medical operations ________ in space
exploration. [ ]
A. like; as long as
B. as; as well as
C. like; as good as
D. as; as far as
e phones, medical operations ________ in space