2014 Anhui Question 1 Single-choice Differentiating 2014_省自主命题(安徽) 1.设 $i$ 是虚数单位,复数 $i^3 + \dfrac{2i}{1+i} = ($ $)$ A. $-i$B. $i$C. $-1$D. $1$ Answer keyD ☆ SaveCan't do it, show the explanation查看原卷 →