%%

Gaokao Math Practice Question

设有下面四个命题 $p_{1}$ : 若复数 $z$ 满足 $\frac{1}{z} \in R$, 则 $z \in R$; $p_{2}$ : 若复数 $z$ 满足 $z^{2} \in R$, 则 $z \in R$; $p_{3}$ : 若复数 $z_{1}, z_{2}$ 满足 $z_{1} z_{2} \in R$, 则 $z_{1}=\bar{z_{2}}$; $p_{4}$ : 若复数 $z \in R$, 则 $\bar{z} \in R$. 其中的真命题为 ($\qquad$)

  1. A.$\mathrm{p}_{1}, \mathrm{p}_{3}$
  2. B.$\mathrm{p}_{1}, \mathrm{p}_{4}$
  3. C.$\mathrm{p}_{2}, \mathrm{p}_{3}$
  4. D.$\mathrm{p}_{2}, \mathrm{p}_{4}$

Want to know if you got it right?

Answer this and thousands more real Gaokao previous-year questions free, get graded instantly, and climb the global ranked leaderboard.

Practice Gaokao free →

More Gaokao Math questions