2011 Zhejiang Question 2 Single-choice Differentiating 2011_浙江卷 (2011·文) 2.(5分)(2011•浙江)若复数$z=1+i$,i为虚数单位,则(1+z)•$z=$( ) A. 1+3iB. 3+3iC. 3﹣iD. 3 Answer keyA ☆ SaveCan't do it, show the explanation查看原卷 →