Gaokao Math Practice Question
3. （5 分) 设 $z=\frac{1}{1+i}+i, \quad$ 则 $|z|=(\quad)$
- A.$\frac{1}{2}$
- B.$\frac{\sqrt{2}}{2}$
- C.$\frac{\sqrt{3}}{2}$
- D.2
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