Gaokao Math Practice Question
1.已知集合 $A=\{-1,0,1,2\}, B=\left\{x \mid x^{2} \leq 1\right\}$, 则 $A \cap B=(\quad)$
- A.$\{-1,0,1\}$
- B.$\{0,1\}$
- C.$\{-1,1\}$
- D.$\{0,1,2\}$
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