设复数z满足（1+i）z=2，其中i为虚数单位，则z=[ ]
A.1+i
B.1-i
C.2+2i
D.2-2i
答案：B
---Is everyone here today?
----____________
A．No, Jack isn’t here.
B．Yes, please.
C．Yes, it is.
D．Let’s go.
域内效力域内效力
